CN201293845Y - 1*2 light power shunt coupler - Google Patents
1*2 light power shunt coupler Download PDFInfo
- Publication number
- CN201293845Y CN201293845Y CNU2008202348279U CN200820234827U CN201293845Y CN 201293845 Y CN201293845 Y CN 201293845Y CN U2008202348279 U CNU2008202348279 U CN U2008202348279U CN 200820234827 U CN200820234827 U CN 200820234827U CN 201293845 Y CN201293845 Y CN 201293845Y
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Abstract
The utility model provides a 1*2 optical power splitting coupler, which comprises a glass header. Two ends inside the header are respectively equipped with a dual fiber collimator and a single fiber collimator, wherein the dual fiber collimator and the single fiber collimator are in glue fixing with a glass sleeve, the dual fiber collimator is composed of a dual-fiber tail fiber and a first glass lens, and the single fiber collimator is composed of a single-fiber tail fiber and a second glass lens. An light emitting end surface of the first glass lens is a perpendicular flat and polishing end surface, other end surfaces of the first and the second glass lens are coated with antireflection coatings, incident light of one path of optical fiber from the dual-fiber tail fiber is emitted to the light emitting end surface of the first glass lens in similar parallel light form, incident light beams in low splitting ratio of 1%-5% are reflected by the end surface to from reflecting light beams, then the reflecting light beams are coupled and output via an end surface of the other path of the dual-fiber tail fiber, the other light beams in high splitting ratio of 95%-99% are transmitted to form transmission light beams, and the transmission light beams are converged at the end surface of the single-fiber tail fiber via the second glass lens and then are coupled and output. The 1*2 optical power splitting coupler has simple structure and low cost, and the length of the whole device is within 27mm.
Description
Technical field
The utility model relates to a kind of 1x2 luminous power shunting coupler.
Background technology
The approximately following several modes of the structure of present 1x2 luminous power shunting coupler: first kind of fused tapered fiber coupler, cost is low, technology is simple, various splitting ratios all can be made, but limited bandwidth system is general+/-40nm, optical power detecting Tap holds poor performance, Wavelength Dependent Loss WDL＞1.0dB with+/-40nm, its physical dimension is general bigger, and length is generally greater than more than the 35mm.The optical power divider of second kind of PLC type, bandwidth performance is good, but the cost height is difficult to making in the coupling mechanism actual process of little splitting ratio, and package dimension is longer, and general package length is greater than 40mm.The third is with WDM light splitting piece type 1x2 optical power divider, comprise: a metal base, the base two ends are respectively equipped with a glass bushing, be provided with a double-fiber collimator and a single fiber collimating apparatus in the pipe, the lens light output end of double-fiber collimator is provided with the WDM light splitting piece, the luminous power shunting coupler bandwidth performance of this kind structure is good, various splitting ratios all can be made, but the WDM light splitting piece needs special customization, the cost height, and limited by coating process, can not accomplish all band reflection, wavelength has certain restriction.
The utility model content
For overcoming above shortcoming, it is a kind of simple in structure that the utility model provides, the 1x2 luminous power shunting coupler that cost is low.
For realizing above goal of the invention, the utility model provides a kind of 1x2 luminous power shunting coupler, comprise: a glass header, two ends are respectively equipped with one by glass bushing glue fixing a double-fiber collimator and a single fiber collimating apparatus in the base, and described double-fiber collimator is made of a pair of optical fiber pigtail and first glass lens; Described single fiber collimating apparatus is made of a single fiber tail optical fiber and second glass lens, the described first glass lens light output end is vertical planar end surface and polishing, first, other end face plating anti-reflection film of second lens, be emitted to the light output end of described first glass lens with approximate directional light from the input light of described pair of optical fiber pigtail one road optical fiber, this end face reflects to form the end face coupling output of folded light beam through another road optical fiber of two optical fiber pigtails with incident beam with little splitting ratio 1%～5%, forms transmitted light beam converges to described single fiber tail optical fiber through second glass lens fiber end face coupling output after remaining big splitting ratio 95%～99% transmission.
Described first, second lens are C-LENS.
Described first, second lens are G-LENS.
Because in the said structure, when the double-fiber collimator incident beam arrives the vertical planar end surface of first lens near directional light, because this end face does not need extra WDM wave filter as any coating film treatment yet, the critical surface of glass and air just, according to the principle of reflection of natural light and the relative index of refraction of lens lens and air, must have the vertical planar end surface reflection of emergent light from these first lens of 1%～5% light, the light beam after the reflection pools wherein one road optical fiber output that is coupled into double-fiber collimator behind the pointolite through first lens again; And transmitted light 95%～99% pools the single fiber output that pointolite is coupled into the single fiber collimating apparatus after through second lens, and anti-reflection film is all plated at other interfaces of two glass lenss, reduces the transmitted light loss.Because be the natural light reflection,, in 1260nm～1650nm, can satisfy wavelength dependence loss WDL＜0.5dB so the bandwidth characteristic of device is very good.Adopt the mode of full glue type glass tube encapsulation, the length controlled of entire device is in 27mm.
Description of drawings
Fig. 1 represents 1x2 luminous power shunting coupler of the present utility model.
Embodiment
A kind of 1x2 luminous power shunting coupler 10, comprise: a glass header 11, two ends are respectively equipped with one by glass bushing 1201,1301 glue fixing a double-fiber collimator 12 and a single fiber collimating apparatus 13 in the base, and double-fiber collimator 12 is made of a pair of optical fiber pigtail 1202 and first glass lens 1203; Described single fiber collimating apparatus 13 is made of a single fiber tail optical fiber 1302 and second glass lens 1303, first glass lens, 1203 light output ends are vertical planar end surface and polishing, first, second lens 1203, other end face plating anti-reflection film of 1303, be emitted to the light output end of described first glass lens 1203 with approximate directional light from the input light 1204 of described pair of optical fiber pigtail 1,202 one road optical fiber, this end face reflects to form the end face coupling output of folded light beam 1205 through another road optical fiber of two optical fiber pigtails 1202 with incident beam with little splitting ratio 1%～5%, forms transmitted light beam 1206 converges to described single fiber tail optical fiber 1302 through second glass lens 1303 fiber end face coupling output after remaining big splitting ratio 95%～99% transmission.First, second lens 1203,1303 are C-LENS or G-LENS.
If the employing allwave fiber is insensitive to the water peak.When needing the reflected light of different weight percentage, can take following mode: the one, when making double-fiber collimator, when making 1203 collimations of the two optical fiber pigtails 1202 and first glass lens, as long as suitably adjust position between the two, adjust the coupling efficiency that reflection optical coupler is incorporated into its output optical fibre end face, just can satisfy the catoptrical output requirement of different small scales, this method technology is fairly simple, does not have and improves (about 0.6dB) but shortcoming is the loss of transmitted light passage.Second method is to plate certain thickness anti-reflection film facing directly of first lens 1203, controls the reflected optical power size, and this method can be improved transmission loss, but the technology of anti-reflection film is had certain requirement, and is relatively complicated.
Claims (3)
1, a kind of 1x2 luminous power shunting coupler (10), comprise: a glass header (11), two ends are respectively equipped with one by glass bushing (1201), a fixing double-fiber collimator (12) and the single fiber collimating apparatus (13) of (1301) glue in the base, and described double-fiber collimator (12) is made of a pair of optical fiber pigtail (1202) and first glass lens (1203); Described single fiber collimating apparatus (13) is made of a single fiber tail optical fiber (1302) and second glass lens (1303), it is characterized in that, described first glass lens (1203) light output end is vertical planar end surface and polishing, first, second lens (1203), (1303) other end face plating anti-reflection film, be emitted to the light output end of described first glass lens (1203) with approximate directional light from the input light (1204) of described pair of optical fiber pigtail (1202) one road optical fiber, this end face reflects to form the end face coupling output of folded light beam (1205) through another road optical fiber of two optical fiber pigtails (1202) with incident beam with little splitting ratio 1%～5%, forms transmitted light beam (1206) converges to described single fiber tail optical fiber (1302) through second glass lens (1303) fiber end face coupling output after remaining big splitting ratio 95%～99% transmission.
2,1x2 luminous power shunting coupler according to claim 1 is characterized in that, described first, second lens (1203), (1303) are C-LENS.
3,1x2 luminous power shunting coupler according to claim 1 is characterized in that, described first, second lens (1203 (, (1303) be G-LENS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202348279U CN201293845Y (en) | 2008-12-05 | 2008-12-05 | 1*2 light power shunt coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202348279U CN201293845Y (en) | 2008-12-05 | 2008-12-05 | 1*2 light power shunt coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201293845Y true CN201293845Y (en) | 2009-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202348279U Expired - Lifetime CN201293845Y (en) | 2008-12-05 | 2008-12-05 | 1*2 light power shunt coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201293845Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950399A (en) * | 2014-03-27 | 2015-09-30 | 上海伟钊光学科技股份有限公司 | Bi-fiber tri-directional fiber device |
| CN111367022A (en) * | 2020-04-30 | 2020-07-03 | 广东三石园科技有限公司 | Compact optical device |
| CN111897056A (en) * | 2020-08-18 | 2020-11-06 | 福州百讯光电有限公司 | Space disturbance removal collimator manufacturing device and method |
| CN113219592A (en) * | 2021-04-25 | 2021-08-06 | 武汉光迅科技股份有限公司 | Optical fiber collimator and manufacturing method thereof |
| CN115079357A (en) * | 2022-06-30 | 2022-09-20 | 北京浦丹光电股份有限公司 | Reflector and WDM combined device and combining method |
-
2008
- 2008-12-05 CN CNU2008202348279U patent/CN201293845Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104950399A (en) * | 2014-03-27 | 2015-09-30 | 上海伟钊光学科技股份有限公司 | Bi-fiber tri-directional fiber device |
| CN111367022A (en) * | 2020-04-30 | 2020-07-03 | 广东三石园科技有限公司 | Compact optical device |
| CN111897056A (en) * | 2020-08-18 | 2020-11-06 | 福州百讯光电有限公司 | Space disturbance removal collimator manufacturing device and method |
| CN111897056B (en) * | 2020-08-18 | 2024-03-22 | 福建中科百讯光电有限公司 | Collimator manufacturing device and method for spatial disturbance removal mode |
| CN113219592A (en) * | 2021-04-25 | 2021-08-06 | 武汉光迅科技股份有限公司 | Optical fiber collimator and manufacturing method thereof |
| CN115079357A (en) * | 2022-06-30 | 2022-09-20 | 北京浦丹光电股份有限公司 | Reflector and WDM combined device and combining method |
| CN115079357B (en) * | 2022-06-30 | 2023-05-23 | 北京浦丹光电股份有限公司 | Reflecting mirror and WDM combined device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090819 |