A kind of microminiature joints of optical fibre with isolator
Technical field
The present invention relates to the microminiature joints of optical fibre; Guarantee that promptly light is transferred to another root optical fiber smoothly from an optical fiber, realize the transmitting effect of light (light signal), particularly a kind of microminiature joints of optical fibre with isolator.
Background technology
Online optoisolator is widely used in optical-fibre communications, and effect is to prevent in the light path because a variety of causes produces the back harmful effect that light source and light path system is produced to transmission light (being reflected light).For example, an optoisolator is installed between semiconductor laser light source and optical transmission system, can be reduced the harmful effect of reflected light to a great extent the spectrum output power stability generation of light source.In the direct modulation of high speed, Direct-detection Optical fiber communication system, the back can produce additional noise to transmission light, makes the performance degradation of system, and this also needs optoisolator to eliminate.Optoisolator is loaded onto at the two ends of the doped fiber in fiber amplifier, can improve the job stability of fiber amplifier, if there is not it, back reflected laser causes the big ups and downs of signal source with in entering signal source (laser instrument).In coherent light long-distance optical fiber communication system, every a segment distance optoisolator is installed, can reduce the power loss that stimulated Brillouin scattering causes.Therefore, optoisolator has important effect in optical fiber communication, optical information processing system, Fibre Optical Sensor and precision optics measuring system.
The microminiature joints of optical fibre (abbreviation Lucent Connector) are to utilize the high-precision ceramic lock pin, fixed fiber, to guarantee that optical fiber is on time, realize high precision centering, low-loss, low cost, simple to operate, removable optical fiber is carried out centering, realize light and light signal from an Optical Fiber Transmission to another root optical fiber, realize the continuity of light and light signal.
The employed connector in optical communication field mainly is made up of following several parts, shown in figure one: outer frame set at present, stop collar, spring, the lock pin of magnetic tape trailer handle, tail sheath amount to five part assemblies, this connector can be realized the transmitted in both directions of light, be luminous energy smoothly from an Optical Fiber Transmission to another root optical fiber, but same, for light in return light may that end face reflected, also can return on former road equally, cause interference system.
Summary of the invention
The technical problem to be solved in the present invention is:
1, provides a kind of new material, under the situation that cost does not increase, replace the employed glass tube of present online optoisolator;
2, provide a kind of mini online optoisolator, external diameter is littler, the optical device that length is shorter;
3, lock pin and online optoisolator are assembled into a device;
4, lock pin and online optoisolator are assembled into microminiature joints of optical fibre primary of being with isolator.
For achieving the above object, the invention provides following technical scheme:
A kind of microminiature joints of optical fibre with isolator, comprise stop collar, spring, the lock pin of magnetic tape trailer handle and tail sheath, also comprise the online isolator of a microminiature, described tail sheath comprises left tail sheath and right tail sheath, and wherein left tail sheath is sheathed on the left end of stop collar, described caudal peduncle is connected with the right-hand member of stop collar by spring, and is connected with right tail sheath by lock pin.
Further, the online optoisolator of described microminiature is installed the end that the lock pin as for the magnetic tape trailer handle is connected with stop collar.
The beneficial effect that the present invention brings is: reduce the harmful effect of reflected light to the spectrum output power stability generation of light source to a great extent; Improved the job stability of fiber amplifier; Reduced the power loss that stimulated Brillouin scattering causes.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the employed connector construction synoptic diagram in present optical communication field
Fig. 2 structural representation of the present invention
Fig. 3 the present invention disassembles a back modular construction position view
Number in the figure is:
The online optoisolator of 1-left side tail sheath 2-stop collar 3-spring 4-microminiature
The right tail sheath of 5-caudal peduncle 6-lock pin 7-
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described in detail.
A kind of microminiature joints of optical fibre as shown in Figure 2 to Figure 3 with isolator, comprise stop collar 2, spring 3, the lock pin 6 of magnetic tape trailer handle 5 and tail sheath, also comprise the online isolator 4 of a microminiature, described tail sheath comprises left tail sheath 1 and right tail sheath 7, and wherein left tail sheath 1 is sheathed on the left end of stop collar, described caudal peduncle is connected with the right-hand member of stop collar 2 by spring 3, and is connected with right tail sheath 7 by lock pin 6.The online optoisolator of described microminiature 4 is installed the end that the lock pin 6 as for magnetic tape trailer handle 5 is connected with stop collar.
Do not changing original online optoisolator production technology, utilize the white porcelain bushing of high density oxidation to replace glass tube, and reduce original glass tube external diameter, reduce total device length, and with ceramic insertion core by special caudal peduncle, with ceramic insertion core and device of online isolator assembling, this process is the core process of product for this reason, again this is with the isolator of lock pin, after end surface grinding processing, be assembled into the microminiature joints of optical fibre of band isolator,, reduce the influence of reflected light system to reach the connector belt isolation features;
Through pilot sample, and failtests, product can reach colleague's like product performance index fully, can satisfy optical communication industry product effect requirement.The detailed technology index is as shown in the table:
More than a kind of microminiature joints of optical fibre with isolator that the embodiment of the invention provided are described in detail; for one of ordinary skill in the art; thought according to the embodiment of the invention; part in specific embodiments and applications all can change; in sum; this description should not be construed as limitation of the present invention, is allly made any change with design philosophy of the present invention, all within protection scope of the present invention.