CN110275249A - A kind of production method reducing optical fibre device coupling loss - Google Patents
A kind of production method reducing optical fibre device coupling loss Download PDFInfo
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- CN110275249A CN110275249A CN201910499079.XA CN201910499079A CN110275249A CN 110275249 A CN110275249 A CN 110275249A CN 201910499079 A CN201910499079 A CN 201910499079A CN 110275249 A CN110275249 A CN 110275249A
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- optical fiber
- coupling loss
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- glass
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/262—Optical details of coupling light into, or out of, or between fibre ends, e.g. special fibre end shapes or associated optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
- G02B6/2746—Optical coupling means with polarisation selective and adjusting means comprising non-reciprocal devices, e.g. isolators, FRM, circulators, quasi-isolators
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention discloses a kind of production methods for reducing optical fibre device coupling loss, be related to optic communication device manufacturing technology field, including including the mode field diameter of optical fiber A being expanded as the Optimization Steps for expanding step and optical splitter will be isolated optimizing identical with optical fiber B mode field diameter.Optical fibre device coupling loss can be effectively reduced in the present invention, reduces isolation optical splitter encapsulation difficulty, reduces product cost.
Description
Technical field
The present invention relates to optic communication device manufacturing technology fields, and in particular to a kind of reduction optical fibre device coupling
The production method of loss.
Background technique
With the fast development that ultrafast laser is obtained in the manufacture fields such as 3C industry and scientific research market, optic communication device
The manufacturing industry of acousto-optic modulator, high power isolator, mixing optical module in manufacturing industry etc. flourishes.In the index of optical device
In, coupling loss, wavelength loss directly affect the optical property of optic module.
As shown in Figure 1, conventional optical fiber collimator includes single hole capillary glass tube 1, is set in the single hole glass capillary
Glass bushing 2 on pipe outer wall surface, the gold-plated welded pipe 3 for being sheathed on 2 outer wall surface of glass bushing and one end accommodating
In in glass bushing 2 and the curvature opposite with the end of hole capillary glass tube 1 be 1.419 condenser lens 4, the condenser lens
4 other end extends to outside the port of glass bushing 2.
In optical fibre device coupling, need for collimator and isolation optical splitter to be coupled the function that can be only achieved optic module
It can require, conventional isolation optical splitter is as shown in Figure 2, comprising: dual hole glass capillary 6 is set in the dual hole glass capillary
Glass bushing 2 on pipe 6, the gold-plated welded pipe 3 being sheathed on glass bushing 2 and one end be placed in glass bushing 2 and with
The opposite condenser lens 4 in the end of dual hole glass capillary, the other end of the condenser lens 4 extend glass bushing 2
Port is simultaneously protruded into the magnet ring for the same internal diameter connecting with the end of glass bushing 2, is additionally provided in magnet ring and is connected with condenser lens
2 polarization splitting prism C7, the polaroid A being arranged successively, faraday's piece, polarizing film are additionally provided with inside the open end of magnet ring
B, it is seen then that have 5 components on the right side of condenser lens, component excessively other than causing packaging technology complicated, is still made
At the major reason of biggish coupling loss.
In addition, by taking existing HI1060Flex optical fiber collimator or PM1550 optical fiber collimator as an example, when its respectively with insert
When having the isolation optical splitter of same type optical fiber to be coupled, coupling loss is respectively less than 0.3dB；But works as it and be inserted with inhomogeneous optical fiber
Isolation optical splitter when being coupled, since the mode field diameter of two kinds of optical fiber mismatches (such as: HI1060Flex fibre-optic mode field diameter
6.3um 1550nm, PM1550 fibre-optic mode field diameter 10.1um 1550nm), cause coupling loss to be greater than 4dB, is not able to satisfy light
Module requirement.It follows that it is the big another major reason of coupling loss that the mode field diameter between optical fiber, which mismatches,.
It is insufficient according to prior art, now need a kind of manufacturing method that can reduce optical fibre device coupling loss.
Summary of the invention
In order to overcome the deficiencies of the prior art, the invention discloses a kind of production methods for reducing optical fibre device coupling loss.
To achieve the above object, the technical scheme is that
It is a kind of reduce optical fibre device coupling loss production method, including by the mode field diameter of optical fiber A expand for optical fiber B
The identical Optimization Steps for expanding step and optimizing isolation optical splitter of mode field diameter.
Preferably, the optical fiber A is Hi1060FLEX optical fiber, and the optical fiber B is PM1550 optical fiber.
Preferably, described expand in step includes: sub-step 1 penetrates optical fiber A in single hole capillary glass tube, and
Carry out end surface grinding；Anti-reflection film is steamed in end face by grinding by sub-step 2；Sub-step 3, the single hole glass that above-mentioned optical fiber A will be had
Glass capillary and condenser lens are put into progress collimator debugging in glass bushing；It is solid using fiber matrix agent after sub-step 4, debugging
Change；Sub-step 5, jacketed gold-plated welded pipe are simultaneously solidified using fiber matrix agent；Sub-step 6 follows above-mentioned device progress high/low temperature
The step of ring test.
Preferably, the angle of the end surface grinding is 8 degree；The 0.1%@1520- of R < of anti-reflection film on the end face
1580nm；0.25@1260-1620nm of R <；The curvature of the condenser lens is 1.419；The collimator debugging needs to meet
When operating distance is 15mm, coupling loss is less than 0.25dB；It is described using fiber matrix agent solidify need to 85 degree at a temperature of, Gu
Change 2 hours；The high/low temperature loop test need to be tested under high/low temperature condition of -40 degree to 85 degree.
Preferably, the fiber matrix agent is 353ND glue.
Preferably, the Optimization Steps are that optical splitter will be isolated to be optimized for following structure: the i.e. described isolation light splitting
Device includes dual hole glass capillary, the glass bushing 2 being set on the dual hole glass capillary, is sheathed on glass bushing 2
Gold-plated welded pipe 3 and one end is placed in glass bushing 2 and the condenser lens opposite with the end of dual hole glass capillary
4, the other end of the condenser lens 4 extends what the port of glass bushing 2 and protruding into was connect with the end of glass bushing 2
In magnet ring, the internal diameter of the magnet ring is identical as the internal diameter of glass bushing 2, and sequentially connected polarization spectro is additionally provided in magnet ring
Prism A, faraday's piece, polarization splitting prism B are inserted with 1 light in the diplopore glass capillary of the isolation optical splitter respectively
Fine B.
Preferably, the horizontal distance between the polarization splitting prism A and polarization splitting prism B is 0.35mm, described
The left end of polarization splitting prism A at a distance from the right end of condenser lens be 0.2mm.
Beneficial effect
A kind of production method for reducing optical fibre device coupling loss of the present invention has the advantages that:
1: HI1060FLEX fiber end face 3mm being done into fused biconical taper and expands processing, by the mode field diameter 6.3um@of optical fiber
1550nm expands 10.1um@1550nm, effectively reduces device matching coupling loss；2: isolation optical splitter is optimized,
By there are 5 components to be adjusted to 3 components on the right side of original condenser lens, encapsulation difficulty is reduced, while reducing device
Overall losses, and saved element cost；3: after expanding step and Optimization Steps, be inserted with optical fiber A collimator and with
The coupling consume for being inserted with the isolation optical splitter of optical fiber B is greatly reduced.
Detailed description of the invention
Fig. 1: for conventional optical fiber collimator structure schematic diagram；
Fig. 2: for conventional isolation optical splitter formation schematic diagram；
Fig. 3: for the collimator after present invention process is processed；
Fig. 4: for the isolation optical splitter after present invention optimization；
1: single hole capillary glass tube, 2: glass bushing, 3: gold-plated welded pipe, 4: condenser lens, 5: fiber matrix agent, 6: double
Hole capillary glass tube, 7: polarization splitting prism, 8: magnet ring, 9: polaroid A, 10: faraday's piece, 11: polarizing film B, 12: polarization divides
Light prism A, 13: polarization splitting prism B.
Specific embodiment
As described below, only presently preferred embodiments of the present invention is not intended to limit the scope of the present invention, it is all
Made any modifications, equivalent replacements, and improvements etc. within the spirit and principles in the present invention, should be included in protection of the invention
Within the scope of.
In description of the invention, it should be noted that term " on " "lower" " left side " " right side " "top" "bottom" "inner" "outside" etc. refers to
The orientation or positional relationship shown is to be based on the orientation or positional relationship shown in the drawings, merely to the description present invention and simplification are retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation and specific orientation constructs and behaviour
Make, therefore is not considered as limiting the invention.
It is a kind of reduce optical fibre device coupling loss production method, including by the mode field diameter of optical fiber A expand for optical fiber B
The identical Optimization Steps for expanding step and optimizing isolation optical splitter of mode field diameter；
The optical fiber A is Hi1060FLEX optical fiber, and the optical fiber B is PM1550 optical fiber；
Described expanding in step includes: optical fiber A is penetrated in single hole capillary glass tube 1, and is held by sub-step 1
Face grinding；Anti-reflection film is steamed in end face by grinding by sub-step 2；Sub-step 3, the single hole glass capillary that above-mentioned optical fiber A will be had
Pipe 1 and condenser lens 4 are put into progress collimator debugging in glass bushing 2；Solidified after sub-step 4, debugging using fiber matrix agent；
Sub-step 5, jacketed gold-plated welded pipe 3 are simultaneously solidified using fiber matrix agent 5；Above-mentioned steps obtained device is carried out height by sub-step 6
The step of low-temperature circulating is tested；
The 0.1%@1520-1580nm of R < of anti-reflection film on the end face；0.25@1260-1620nm of R <；Described
The curvature of condenser lens 4 is 1.419；The described collimator debugging need to meet operating distance when being 15mm, and coupling loss is less than
0.25dB；It is described using fiber matrix agent 5 solidify need to 85 degree at a temperature of, solidify 2 hours；The high/low temperature, which recycles, to be surveyed
Examination need to be tested under high/low temperature condition of -40 degree to 85 degree；
The fiber matrix agent 5 is 353ND glue；
The Optimization Steps are that optical splitter will be isolated to be optimized for following structure: i.e. the isolation optical splitter includes double
Hole capillary glass tube 6, the glass bushing 2 being set on the dual hole glass capillary 6, be sheathed on it is gold-plated on glass bushing 2
Welded pipe 3 and one end are placed in glass bushing 2 and the condenser lens 4 opposite with the end of dual hole glass capillary 6, institute
The other end for the condenser lens 4 stated extends the port of glass bushing 2 and protrudes into the magnet ring 8 connecting with the end of glass bushing 2
Interior, the internal diameter of the magnet ring 8 is identical as the internal diameter of glass bushing 2, and sequentially connected polarization spectro rib is additionally provided in magnet ring 8
Mirror A12, faraday's piece 10, polarization splitting prism B13 are inserted with 1 in the diplopore glass capillary 6 of the isolation optical splitter respectively
Root optical fiber B；
Horizontal distance between the polarization splitting prism A and polarization splitting prism B is 0.35mm, the polarization point
The left end of light prism A12 is 0.2mm at a distance from the right end of condenser lens 4.
The light that optical fiber collimator comes out is Gaussian beam, and Gaussian beam is diverging after with a tight waist.Two collimator couplings
It when conjunction, is overlapped in beam waist position light beam, coupling loss is minimum, and the distance of two collimator end faces at this time is known as the work of collimator
Make distance.
The essence for expanding technique is that optical fiber is carried out to fused biconical taper processing, and real time monitoring optical fiber A expands light in technical process
The variable quantity of fine light passing hot spot, when reaching design requirement (when consistent with PM1550 optical fiber light passing hot spot), stopping expands technique, this
When optical fiber A mode field diameter it is identical as the mode field diameter of optical fiber B.
As shown in figure 4, isolation optical splitter by optimization two polarizing films fewer than conventional isolation optical splitter (Fig. 2),
To make the optical device on the right side of condenser lens become 3 from 5, the encapsulation difficulty of isolation optical splitter is effectively reduced, and
And coupling loss is greatly reduced, it is tested according to experiment, the coupling loss of conventional isolation optical splitter is higher, reaches the left side 2.5dB
The right side, and the coupling loss of optimized isolation optical splitter is substantially reduced, and can drop to 1.4dB hereinafter, effect is obvious.
When being coupled, need will through expanding the collimator (Fig. 3) with optical fiber A of process with after optimization
Isolation optical splitter (Fig. 4) with optical fiber B match and use, since isolation optical splitter (Fig. 4) greatly reduces coupling by optimization
Loss is closed, in addition, keeping the mode field diameter of optical fiber A identical as the mode field diameter of optical fiber B due to expanding technique, causes coupling loss big
Width reduces.
By taking " optical fiber A is Hi1060FLEX optical fiber, optical fiber B is PM1550 optical fiber " as an example, in actual measurement, the two is coupled
After matching, coupling loss is reduced to 0.8dB by 3.6dB, can be good at the job requirement for meeting optic module.
In view of the foregoing it is apparent that the present invention can effectively reduce optical fibre device coupling loss, encapsulation difficulty is reduced,
Production cost is saved, the coupling operation of optical fibre device is made to become easier to be more efficient.
Claims (7)
1. it is a kind of reduce optical fibre device coupling loss production method, it is characterized in that: including by the mode field diameter of optical fiber A expand for
The Optimization Steps for expanding step and optical splitter will be isolated optimizing identical with optical fiber B mode field diameter.
2. the production method for reducing optical fibre device coupling loss as described in claim 1, it is characterized in that: the optical fiber A is
Hi1060FLEX optical fiber, the optical fiber B are PM1550 optical fiber.
3. the production method for reducing optical fibre device coupling loss as claimed in claim 2, it is characterized in that: described expands step
In include:
Sub-step 1 penetrates optical fiber A in single hole capillary glass tube (1), and carries out the angle grinding of 8 degree of end face；
Anti-reflection film is steamed in end face by grinding by sub-step 2；
Single hole capillary glass tube (1) with above-mentioned optical fiber A is put into glass bushing (2) by sub-step 3 with condenser lens (4)
Carry out collimator debugging；
Fiber matrix agent (5) cured program is used after sub-step 4, debugging；
Sub-step 5, jacketed gold-plated welded pipe (3) simultaneously use fiber matrix agent (5) cured program；
Sub-step 6, will after above-mentioned steps obtained device carry out high/low temperature loop test the step of.
4. the production method for reducing optical fibre device coupling loss as claimed in claim 3, it is characterized in that:
The 0.1%@1520-1580nm of R < of anti-reflection film on the end face；0.25%@1260-1620nm of R <；
The curvature of the condenser lens (4) is 1.419；
The described collimator debugging need to meet operating distance when being 15mm, and coupling loss is less than 0.25dB；
It is described using fiber matrix agent (5) solidify need to 85 degree at a temperature of, solidify 2 hours；
The high/low temperature loop test need to carry out under high/low temperature condition of -40 degree to 85 degree.
5. the production method for reducing optical fibre device coupling loss as claimed in claim 4, it is characterized in that: the fiber matrix
Agent (5) is 353ND glue.
6. the production method that any one as described in Claims 1 to 5 reduces optical fibre device coupling loss, it is characterized in that: institute
The Optimization Steps stated are that optical splitter will be isolated to be optimized for following structure: i.e. the isolation optical splitter includes dual hole glass capillary
Pipe (6), the glass bushing (2) being set on the dual hole glass capillary (6), the plating gold solder being sheathed on glass bushing (2)
Adapter tube (3) and one end are placed in glass bushing (2) and the condenser lens opposite with the end of dual hole glass capillary (6)
(4), the other end of the condenser lens (4) extends the port of glass bushing (2) and protrudes into and the end of glass bushing (2)
In the magnet ring (8) of portion's connection, the internal diameter of the magnet ring (8) is identical as the internal diameter of glass bushing (2), close in magnet ring (8)
Open end is additionally provided with sequentially connected polarization splitting prism A (12), faraday's piece (10), polarization splitting prism B (13), described
It is isolated in the diplopore glass capillary (6) of optical splitter and is inserted with 1 optical fiber B respectively.
7. the production method for reducing optical fibre device coupling loss as claimed in claim 6, it is characterized in that: the polarization spectro
Horizontal distance between prism A (12) and polarization splitting prism B (13) is 0.35mm, the polarization splitting prism A's (12)
Left end is 0.2mm at a distance from the right end of condenser lens (4).
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2446537Y (en) * | 2000-10-18 | 2001-09-05 | 福建华科光电有限公司 | Optical fiber collimator structure |
| CN2490766Y (en) * | 2001-08-23 | 2002-05-08 | 三一光电子有限公司 | Polarized extraneous optosolator |
| CN1388391A (en) * | 2002-06-28 | 2003-01-01 | 浙江大学 | Optical fiber collimator |
| CN1402051A (en) * | 2001-08-23 | 2003-03-12 | 三一光电子有限公司 | Polarization independent type optical isolator and mfg. method thereof |
| CN201017068Y (en) * | 2007-02-13 | 2008-02-06 | 亚洲光学股份有限公司 | Optical fiber collimating device |
| CN101408645A (en) * | 2008-11-25 | 2009-04-15 | 中国科学院上海微***与信息技术研究所 | Ellipse light spot optical fiber collimator and application thereof |
-
2019
- 2019-06-11 CN CN201910499079.XA patent/CN110275249A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2446537Y (en) * | 2000-10-18 | 2001-09-05 | 福建华科光电有限公司 | Optical fiber collimator structure |
| CN2490766Y (en) * | 2001-08-23 | 2002-05-08 | 三一光电子有限公司 | Polarized extraneous optosolator |
| CN1402051A (en) * | 2001-08-23 | 2003-03-12 | 三一光电子有限公司 | Polarization independent type optical isolator and mfg. method thereof |
| CN1388391A (en) * | 2002-06-28 | 2003-01-01 | 浙江大学 | Optical fiber collimator |
| CN201017068Y (en) * | 2007-02-13 | 2008-02-06 | 亚洲光学股份有限公司 | Optical fiber collimating device |
| CN101408645A (en) * | 2008-11-25 | 2009-04-15 | 中国科学院上海微***与信息技术研究所 | Ellipse light spot optical fiber collimator and application thereof |
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Application publication date: 20190924 |