CN1313852C - Packing method and structure of optical fiber optical element - Google Patents
Packing method and structure of optical fiber optical element Download PDFInfo
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- CN1313852C CN1313852C CNB031602185A CN03160218A CN1313852C CN 1313852 C CN1313852 C CN 1313852C CN B031602185 A CNB031602185 A CN B031602185A CN 03160218 A CN03160218 A CN 03160218A CN 1313852 C CN1313852 C CN 1313852C
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Abstract
The present invention relates to a packing method of an optical fiber optical element and a structure thereof. A package structure of an optical fiber optical element adopting the packing method comprises a sub-assembly of an optical fiber optical device formed by the extension of an optical fiber, an annular cap, a sleeve pipe and an outer packing pipe. Cement infiltrates the sub-assembly of the optical fiber optical device and tiny gaps among the components through making use of a capillary action; thereby, a compact jointing and a tight packaging purposes are achieved. The jointing mode is different to and is superior to a soldering tin jointing mode utilized by a general optical element.
Description
Technical field
The present invention relates to a kind of method for packing and structure of optical device of optical-fibre communications, particularly utilize capillary action that cement is infiltrated in time combination and the minim gap between each parts of an optical device, and reach fine and close method for packing and the structure that engages and seal.
Background technology
The encapsulation of the optical module of at present general optical-fibre communications, mostly be to utilize cement that optical module and necessary parts are sticked together to make time combination (sub-assembly), and then it is packaged into the product of integral sealing with the scolding tin technology, Fig. 1 shows a kind of encapsulation sectional view that utilizes the known optical access wave filter (Optical Add/Drop Filter) of scolding tin technology manufacturing, it is to utilize cement with synthetic incident end (common port) 30 of each component groups and penetration end (pass port) 31 earlier, and then with the scolding tin technology incident end 30 and penetration end 31 is made up.The two fine collimating apparatus of this incident end 30 (dual fiber collimator) comprising: a pair of optical fiber pigtail (dual fiber pigtail) 2, a pair of optical fiber (fider) 3a, 3b, one first gradually changed refractive index lens (GRIN lens), 4,1 first glass bushing (glass tube) 8a and a filter plate (filter) 5, and the single fiber collimating apparatus of this penetration end 31 (single fiber collimator) comprising: one second gradually changed refractive index lens 6, a single fiber tail optical fiber 7, an optical fiber 3c and one second glass bushing 8b.When this optical access filter operations, at least plural different wavelengths of light signal is injected from the optical fiber 3b of incident end 30, wherein the light signal of some specific wavelengths can pass through filter plate 5, focus on the left side of the second glass lasso 7 then through the second gradually changed refractive index lens 6, export by optical fiber 3c again; The reflection of then filtered 5 of the light signal of other wavelength focuses on the right side of the first glass lasso 2 through the first gradually changed refractive index lens 4, exports via optical fiber 3a again.
The performance of optical module and long-term stability and the environmental sealing that uses are closely bound up, the first glass bushing 8a of incident end 30 and two optical fiber pigtail 2 and 4 on the first gradually changed refractive index lens have a close gap (about 0.005～0.3mm) among Fig. 1, utilize capillary action that cement is infiltrated in this gap, to reach the effect of fluid-tight engagement and sealing, then be enclosed within first glass bushing 8a outside with a metal sleeve 9a, insert between the two minim gap (in about 0.005～0.3mm), with cement again to reach the effect of fluid-tight engagement and sealing; The joint method of penetration end 31 is identical with preceding method, utilize cement to insert in the close gap of 6 on the second glass bushing 8b and single fiber tail optical fiber 7 and the second gradually changed refractive index lens, then be enclosed within second glass bushing 8b outside with one second metal sleeve 9b, insert between the two the minim gap, with cement again to reach the effect of fluid-tight engagement and sealing.When incident end 30 makes up with penetration end 31, the light intensity that the specific wavelength light source of incident end 30 enters penetration end 31 need reach maximal value, that is insertion loss (insertion loss) needs minimum, during encapsulation, for making transmitted intensity reach maximal value, the position of penetration end 31 can produce skew with respect to incident end 30 and tilt, that is penetration end 31 can be on same axis with incident end 30, therefore, gap between external package pipe (housing tube) the 11 and first metal sleeve 9a and the second metal sleeve 9b must reserve bigger headroom (about 0.1～1.5mm), can make penetration end 31 and incident end 30 in external package pipe 11, obtain best coupling.Gap between the external package pipe 11 and the first metal sleeve 9a and the second metal sleeve 9b is bigger, generally all be to engage with tin-soldering method (solder process), at first adjust the relative position of penetration end 31 and incident end 30, when optimal light intensity is arrived in both couplings (coupling), with scolding tin 12 external package pipe 11 is engaged sealing with the first metal sleeve 9a and the second metal sleeve 9b again.
The method for packing of known optical access wave filter is earlier to infiltrate time combination that forms the optical module of fluid-tight engagement in the close gap of each inter-module with cement, and then the sealed product that is combined into one with the scolding tin preparation process.Yet in the scolding tin preparation process, assembly can be heated, and need do the adjustment of coupling light simultaneously, and operation is difficult for; The microstress that the scolding tin preparation process is caused can discharge gradually, and influences optical property and the long-term stability of using; In addition, must additionally use two metal sleeves and two glass bushings, and metal sleeve and gold-plated could the combining closely with scolder of external package pipe need, black box volume and material cost can be increased.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of method for packing and structure of optical fiber optical device, with the following shortcoming of the scolding tin preparation process in the encapsulation that solves known optical fiber optical device:
In the scolding tin preparation process, assembly can be heated, and need do the adjustment of coupling light simultaneously, and operation is difficult for;
The microstress that the scolding tin preparation process is caused can discharge gradually, and influences optical property and the long-term stability of using;
Must additionally use two metal sleeves and two glass bushings, and metal sleeve and gold-plated could the combining closely with scolder of external package pipe need, black box volume and material cost can be increased.
Technological means of the present invention comprises following method:
One possesses time combination of the optical device of specific function, and its two ends have optic fibre extension and come out;
First end of time combination of this optical device packs into a ring cap, utilizes cement to infiltrate in the close gap between the combination of this ring cap and this optical device, and it is combined closely and seals;
Inferior second end that makes up at this optical device is reserved one section optical fiber (length is d1);
In one section optical fiber d1 back that inferior combination second end of this optical device is reserved, divest the coating (length is d2) of another section optical fiber;
The optical fiber of time combination second end of this optical device is inserted in a sleeve pipe, this sleeve pipe has a central hole of that it(?) only can receiving optical fiber pass through, this sleeve pipe covers this optical fiber that divests coating fully, utilize cement to infiltrate in the central hole and the close gap between this optical fiber that divests coating of this sleeve pipe, and it is combined closely and seal;
Be inserted in a metal external package pipe at this ring cap and this cover tube outside, utilize cement to infiltrate in metal external package pipe and the close gap of encircling between cap and sleeve pipe, and it is combined closely and seal.
The present invention also provides a kind of encapsulating structure that adopts the optical fiber optical device of above-mentioned method for packing, and it comprises:
Time combination of one optical device, its two ends have one or more optic fibre extension and come out;
First end of time combination of this optical device packs into a ring cap;
Inferior second end that makes up at this optical device is reserved one section optical fiber, and length is d1, and divests the coating of another section optical fiber in its rear, and length is d2;
The optical fiber of time combination second end of this optical device is inserted in a sleeve pipe, and this sleeve pipe has one only can hold the central hole that this optical fiber passes through, and this sleeve pipe covers this optical fiber that divests coating fully;
Be inserted in a metal external package pipe at this ring cap and this cover tube outside.
Compare with known method for packing, the present invention mainly utilizes cement to infiltrate in the close gap between each parts, and reach the good result of fluid-tight engagement and sealing, do not need to use the scolding tin processing procedure, so can obtain the stable and cost-effective optical fiber optical device of better, the long-term use of optical property in the coupling light time.
Description of drawings
Fig. 1 shows the sectional view of known optical access wave filter with the scolding tin encapsulation;
Fig. 2 shows the inferior synoptic diagram that makes up of the optical device of miniaturization optical access wave filter;
Fig. 3 shows the sectional view of first kind of embodiment of miniaturization optical access filter package structure of the present invention;
Fig. 4 shows in the encapsulating structure of miniaturization optical access wave filter of the present invention, reserves one section fiber lengths in the glass bushing back with the synoptic diagram of buffering because of the stress that temperature variation was produced;
Regional area length in Fig. 5 display optics is that the expansion coefficient of time combination of 20mm and optical device is 7 * 10
-6/ ℃ the time, the graph of a relation of the fiber lengths d1 of the expansion coefficient of metal external package pipe and reservation;
Fig. 6 shows the synoptic diagram of the optical device of another kind of form with method for packing encapsulation of the present invention;
Fig. 7 shows second kind of embodiment of encapsulating structure of the present invention, and time combination two ends of optical device all use the sleeve pipe mode to encapsulate; And
Fig. 8 shows the third embodiment of encapsulating structure of the present invention.
Wherein, description of reference numerals is as follows:
2-two optical fiber pigtail 3a, 3b, 3c-optical fiber
The 4-first gradually changed refractive index lens 5-filter plate
The 6-second gradually changed refractive index lens 7-single fiber tail optical fiber
The 8a-first glass bushing 8b-second glass bushing
The 9a-first metal sleeve 9b-second metal sleeve
11-external package pipe 12-scolding tin
30-incident end 31-penetration end
The 200-first gradual index lens 201-second gradual index lens
The two optical fiber pigtail 220-single fiber tail optical fibers of 210-
230-filter plate 241-encircles cap
242-sleeve pipe 243-metal external package pipe
245-central hole 250-solid
270,271,272,273-optical fiber 272c-optical fiber
291,292,293,294,295-gap 272a, 273a-optical fiber
310, time combination 300-optical fiber collimator of 330-optical device
The canned structure of 320-regional area 351-(TO-Can)
352-vertical cavity surface radiation laser, receiver or by sub-assembly that MEMS formed
The 400-padded coaming
Embodiment
Fig. 2 is the synoptic diagram of time combination 310 of an optical device, it is the miniaturization optical access wave filter by each optical module serial connection, it comprises: two optical fiber pigtails 210, first gradual index lens 200, filter plate (WDM Filter) 230, second gradual index lens 201, single fiber tail optical fiber 220 and optical fiber 270,271,272, between each interface, do the reinforcement of interface respectively with cement 250, Fig. 3 is the encapsulation synoptic diagram of miniaturization optical access wave filter of the present invention, its method for packing is as follows: be inserted in the ring cap that a length is d3 (housing cap) 241 in two optical fiber pigtails 210 outsides, its material need possess character such as completely cutting off the suitable thermal expansivity of aqueous vapor and tool and is difficult for getting rusty fully, it can be metal or glass or pottery, gap 291 between this ring cap 241 and the two optical fiber pigtail 210 is very narrow and small (to be approximately 0.005～0.3mm), utilize capillary action that cement (as epoxy resin (epoxy resin)) is infiltrated in this gap 291, reach the effect of fluid-tight engagement and sealing.The output optical fibre 272 of single fiber tail optical fiber 220 rear ends in suitable apart from d1 after; divesting a bit of length is the optical fiber 272a coating of d2; this coating is generally the acryl material; the effect of tool protection optical fiber; can't make good bond with cement but matter is softer; must divest; then optical fiber 272 is inserted in a sleeve pipe (sleeve) 242; its length is slightly larger than d2; its material is identical with ring cap 241 materials; sleeve pipe 242 have a narrow and small central hole 245 only facial expression fibre 272 pass; and the close gap 294 between sleeve pipe 242 and the optical fiber 272a (being approximately 0.005～0.3mm) infiltrates in it with cement; to reach fluid-tight engagement; sealing and protection are divested the effect of the optical fiber 272a of coating; at last; be inserted in a metal external package pipe (metal housing tube) 243 again at ring cap 241 and sleeve pipe 242 outsides; this external package pipe 243 removes need possess isolated fully aqueous vapor; be difficult for getting rusty and suitably outside the intensity; and need possess and the mutual matched coefficient of thermal expansion of assembly; close gap 292 between external package pipe 243 and ring cap 241 and the sleeve pipe 242 (is about 0.005～0.3mm) with the cement infiltration wherein, and reaches the effect of whole fluid-tight engagement and sealing.
Please refer to Fig. 3, the inside regional area 320 of the miniaturization optical access wave filter after the encapsulation can be subjected to encircling the constraint of cap 241, sleeve pipe 242 and metal external package pipe 243, the thermal expansivity of time combination 310 of the thermal expansivity of ring cap 241, sleeve pipe 242 and metal external package pipe 243 and optical device needs and can suitably mate on material is selected, under temperature variations, just can avoid its stress each other.The thermal expansivity of time combination 310 of optical device is about 5 * 10
-6～9 * 10
-6/ ℃, be to calculate and get by each part other thermal expansivity institute weights together, the thermal expansivity of metal external package pipe 243 materials of selecting for use is also with 5 * 10
-6～9 * 10
-6/ ℃ scope is good.Generally speaking, the difference of the overall thermal expansion coefficient of the thermal expansivity of this metal external package pipe and each parts is preferably in 30 * 10
-6/ ℃ with interior (please refer to Fig. 5); Both thermal expansivity are identical better.
In addition, because the optical fiber 272 in time combination 310 of optical device possesses pliability, the purpose of reserving fiber lengths d1 is the compression stress in order to deal with time combination 310 when optical device and to be subjected to changing to low temperature by high temperature and cause optical fiber 272 flexural deformations (generally speaking, cement all needs to make its full solidification through heated baking), as shown in Figure 4, because of the compression stress of metal external package pipe 243 causes optical fiber 272 to bend to 272c, if its bending diameter more than 40mm, can't cause extra damage of optical device and the variation on the properties of product.Fig. 5 be regional area 320 length in the display optics be 20mm and optical device time the combination expansion coefficient be 7 * 10
-6/ ℃ the time, (expansion coefficient of optical fiber is 0.5 * 10 to optical fiber 272 length in reserve d1
-6/ ℃) with the graph of a relation of the expansion coefficient of metal external package pipe 243 (being that material is selected), if the expansion coefficient of metal external package pipe 243 is more greater than the thermal expansivity of time combination 310 of optical device, then the length in reserve d1 of optical fiber 272 needs long more.
Encapsulating structure of the present invention is except that the triple channel optical access wave filter that can be applicable to miniaturization (3-portoptical add-drop filter), also can be used in the encapsulation preparation process of other optical module, as hyperchannel optical access wave filter, photo-coupler (Coupler), optoisolator (Optical Isolator), polarization optical splitter (Polarization Beam Splitter) or other blend together time combination of the optical device that assembly (Hybrid component) is combined into etc., Fig. 6 shows the encapsulating structure of a multichannel optical device, its structure and Fig. 3 are much at one, different is: second end of time combination 330 of optical device has two optical fiber 272,273, and in its second end back suitable apart from d1 after, this output optical fibre 272, it (is optical fiber 272a that 273 coating need divest a bit of length d 2,273a), the central hole 245 of sleeve pipe 242 facial expression fibre 272 only, 273 pass.Time combination 330 of optical device can be above-mentioned various product form for possessing the optical module of specific function, and according to the difference of product kenel, the number of fibers at time combination 330 two ends of optical device can be one or more.
The another kind of pattern of Fig. 8 display application encapsulating structure of the present invention, when the vertical cavity surface radiation laser (VCSEL) of device on canned structure (TO-Can) 351, receiver (Receiver) or when being coupled to the optimum position by sub-assembly that MEMS formed 352 and optical fiber collimator 300, optical fiber collimator 300 is fixed on the canned structure (TO-Can) 351, metal external package pipe 243 is enclosed within on the canned structure (TO-Can) 351 then, infiltrating close gap 295 between metal external package pipe 243 and the canned structure (TO-Can) 351 with cement again (is about in 0.005～0.3mm), and reaches the effect of fluid-tight engagement and sealing.In addition, the packaged type of optical fiber collimator 300 rear ends is identical with Fig. 6.
Please refer to Fig. 3, Fig. 6, Fig. 7 and Fig. 8, the length (being respectively d2, d3 and d4) of ring cap 241, sleeve pipe 242 and canned structure (TO-Can) 351 is long more, then its respectively and time combination 320,330 of this optical device and the composition surface between the metal external package pipe 243 big more, can increase the packaging effect of fluid-tight engagement and sealing.
More than utilize cement lower in conjunction with the cost of the packaged type of each parts, if do not consider cost factor, be same as aforesaid encapsulating structure, associated methods can have some variations, Fig. 3, Fig. 6,241 on the external package pipe 243 of Fig. 7 and Fig. 8 and ring cap, external package pipe 243 also is able to scolding tin (solder) with engaging of 242 of sleeve pipes or laser welding (Laser welding) method reaches the effect of fluid-tight engagement and sealing, what the way of this scolding tin or laser welding method and prior art was different is: encapsulating structure of the present invention does not need coupling light, because time combination 310 of this optical device, 330 have been connected in series each optical module coupling light, only note during encapsulation that optical fiber does not have serious bending (bending), therefore can under the prerequisite that does not influence optical property, do encapsulation fast; Similarly, engaging between sleeve pipe 242 and optical fiber 272a, 273a also can be utilized scolding tin (solder) or glass welding (glass solder) method and reach the effect of fast sealing.
The above only is in order to explain preferred embodiment of the present invention, be not that attempt is done any pro forma restriction to the present invention according to this, therefore, all have in that identical creation spirit is following do relevant any modification of the present invention or change, be all claim of the present invention and contain.
Claims (14)
1, a kind of method for packing of optical fiber optical device is characterized in that comprising:
One has time combination of the optical device of specific function, and its two ends have optic fibre extension and come out;
First end of time combination of this optical device packs into a ring cap, utilizes cement to infiltrate in the close gap between inferior combination of this ring cap and this optical device, and it is combined closely and seals;
Inferior second end that makes up at this optical device is reserved one section optical fiber, and length is d1;
In one section optical fiber d1 back that inferior combination second end of this optical device is reserved, divest the coating of another section optical fiber, length is d2;
The optical fiber of time combination second end of this optical device is inserted in a sleeve pipe, this sleeve pipe has a central hole of that it(?) only can receiving optical fiber pass through, this sleeve pipe covers this optical fiber that divests coating fully, utilize cement to infiltrate in the central hole and the close gap between this optical fiber that divests coating of this sleeve pipe, and it is combined closely and seal;
Be inserted in a metal external package pipe at this ring cap and this cover tube outside, utilize cement to infiltrate in metal external package pipe and the close gap of encircling between cap and sleeve pipe, and it is combined closely and seal.
2, method for packing as claimed in claim 1, it is characterized in that, one section fiber lengths d1 is reserved in the second end back of time combination of this optical device, be to establish because of the stress that temperature variation produced for buffering, the fiber lengths d1 of this reservation decides according to the expansion coefficient of this external package pipe, the expansion coefficient of this external package pipe is big more, and then the fiber lengths d1 that reserves needs long more.
3, method for packing as claimed in claim 1; it is characterized in that; the optical fiber processing method of time combination second end of this optical device is: reserve one section fiber lengths d1; after the fiber lengths of this reservation, divest one section optical fiber coating, length is d2; this fiber lengths that divests coating is slightly less than this casing length; after this casing pipe sleeve was gone into optical fiber, this sleeve pipe covered this optical fiber that divests coating fully, divested the optical fiber of coating to protect this section.
4, method for packing as claimed in claim 1 is characterized in that, time part that engages with this ring cap of combination of this optical device is the fine and close material of waterproof fully, can be metal or ceramic a kind of.
5, method for packing as claimed in claim 1 is characterized in that, material of this ring cap and this sleeve pipe is the fine and close material of waterproof fully, can be metal or ceramic a kind of.
6, method for packing as claimed in claim 1 is characterized in that, engaging between this external package pipe and this ring cap, between this external package pipe and this sleeve pipe is to utilize the mode of scolding tin welding to engage.
7, method for packing as claimed in claim 1 is characterized in that, engaging between this external package pipe and this ring cap, between this external package pipe and this sleeve pipe is to utilize the mode of laser welding to engage.
8, method for packing as claimed in claim 1 is characterized in that, it is to utilize the mode of scolding tin welding to engage that this sleeve pipe divests engaging between the optical fiber of coating with this.
9, method for packing as claimed in claim 1 is characterized in that, it is to utilize the mode of glass welding to engage that this sleeve pipe divests engaging between the optical fiber of coating with this.
10, method for packing as claimed in claim 1 is characterized in that, this cement can be epoxy resin.
11, method for packing as claimed in claim 1 is characterized in that, the difference of the overall thermal expansion coefficient of the thermal expansivity of this metal external package pipe and each parts is 30 * 10
-6/ ℃ in; Or both thermal expansivity are identical.
12, a kind of encapsulating structure of optical fiber optical device is characterized in that comprising:
Time combination of one optical device, its two ends have one or more optic fibre extension and come out;
First end of time combination of this optical device packs into a ring cap;
Inferior second end that makes up at this optical device is reserved one section optical fiber, and length is d1, and divests the coating of another section optical fiber in its rear, and length is d2;
The optical fiber of time combination second end of this optical device is inserted in a sleeve pipe, and this sleeve pipe has one only can hold the central hole that this optical fiber passes through, and this sleeve pipe covers this optical fiber that divests coating fully;
Be inserted in a metal external package pipe at this ring cap and this cover tube outside.
13, encapsulating structure as claimed in claim 12 is characterized in that it also can be:
Time combination of one optical device, its two ends have one or more optic fibre extension and come out;
First end and second end in time combination of this optical device are respectively reserved one section optical fiber, and length is d1, and divests the coating of another section optical fiber respectively at its rear, and length is d2;
Time combination first end of this optical device and the optical fiber of second end respectively are inserted in a sleeve pipe, and this sleeve pipe has one only can hold the central hole that this optical fiber passes through, and this sleeve pipe covers this optical fiber that divests coating fully;
Be inserted in a metal external package pipe in this cover tube outside.
14, encapsulating structure as claimed in claim 12 is characterized in that it also can be:
Time combination of one optical device, its first end is enclosed package, and its second end has one or more optic fibre extension and comes out;
Inferior second end that makes up at this optical device is reserved one section optical fiber, and length is d1, and divests the coating of another section optical fiber in its rear, and length is d2;
The optical fiber of time combination second end of this optical device is inserted in a sleeve pipe, and this sleeve pipe has one only can hold the central hole that this optical fiber passes through, and this sleeve pipe covers this optical fiber that divests coating fully;
A metal external package pipe is inserted in time combination first end and this cover tube outside at this optical device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031602185A CN1313852C (en) | 2003-09-27 | 2003-09-27 | Packing method and structure of optical fiber optical element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031602185A CN1313852C (en) | 2003-09-27 | 2003-09-27 | Packing method and structure of optical fiber optical element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1601311A CN1601311A (en) | 2005-03-30 |
| CN1313852C true CN1313852C (en) | 2007-05-02 |
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| CNB031602185A Expired - Fee Related CN1313852C (en) | 2003-09-27 | 2003-09-27 | Packing method and structure of optical fiber optical element |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0607572D0 (en) * | 2006-04-18 | 2006-05-24 | Dunlop Oil & Marine Ltd | Leak detector |
| CN103630976A (en) * | 2013-10-29 | 2014-03-12 | 刘丹 | Manufacturing method of 18ch-high-isolation dense wavelength division multiplexing products with |
| CN105319425B (en) * | 2014-07-09 | 2018-06-26 | 北京自动化控制设备研究所 | A kind of packaging method of full-fiber quarter wave plate |
| CN108169696A (en) * | 2017-12-27 | 2018-06-15 | 北京信息科技大学 | A kind of magnetic field strength transducer and its performance test methods based on FBG |
| CN108051762A (en) * | 2017-12-27 | 2018-05-18 | 北京信息科技大学 | A kind of magnetic field strength transducer and its performance test methods based on FP |
| CN114112104A (en) * | 2021-11-17 | 2022-03-01 | 绍兴市上虞区武汉理工大学高等研究院 | Optical fiber temperature sensor packaging method and pressure resistance testing method for high-pressure runner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5177806A (en) * | 1986-12-05 | 1993-01-05 | E. I. Du Pont De Nemours And Company | Optical fiber feedthrough |
| US5613026A (en) * | 1993-12-28 | 1997-03-18 | Sumitomo Osaka Cement Co., Ltd. | Package structure for optical element and fibers and composite structure thereof |
| US20020122653A1 (en) * | 2001-02-27 | 2002-09-05 | Codeon Corporation | Hermetically sealed fiber tail assembly |
| CN1393709A (en) * | 2001-06-22 | 2003-01-29 | 陈祖培 | Moisture-proof sealing method for optical fibre device |
-
2003
- 2003-09-27 CN CNB031602185A patent/CN1313852C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5177806A (en) * | 1986-12-05 | 1993-01-05 | E. I. Du Pont De Nemours And Company | Optical fiber feedthrough |
| US5613026A (en) * | 1993-12-28 | 1997-03-18 | Sumitomo Osaka Cement Co., Ltd. | Package structure for optical element and fibers and composite structure thereof |
| US20020122653A1 (en) * | 2001-02-27 | 2002-09-05 | Codeon Corporation | Hermetically sealed fiber tail assembly |
| CN1393709A (en) * | 2001-06-22 | 2003-01-29 | 陈祖培 | Moisture-proof sealing method for optical fibre device |
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|---|---|
| CN1601311A (en) | 2005-03-30 |
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