CN103323105B - Unidirectional spectrophotometric detector and manufacture method thereof - Google Patents
Unidirectional spectrophotometric detector and manufacture method thereof Download PDFInfo
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- CN103323105B CN103323105B CN201310213680.0A CN201310213680A CN103323105B CN 103323105 B CN103323105 B CN 103323105B CN 201310213680 A CN201310213680 A CN 201310213680A CN 103323105 B CN103323105 B CN 103323105B
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Abstract
The present invention discloses a kind of unidirectional spectrophotometric detector, comprise bidirectional optical fiber assembly and photo-detector, described bidirectional optical fiber assembly has two fiber ports for inputing or outputing light signal, also have and to reflect light signal and the half-reflecting half mirror of transmission, described photo-detector and half-reflecting half mirror are oppositely arranged; Also single optical fiber calibrator is provided with between described half-reflecting half mirror and photo-detector, described single optical fiber calibrator exports the light signal of one of them input from described two fiber ports to described photo-detector, and is shielded described photo-detector by the light signal of another input from described two fiber ports.A kind of manufacture method of this unidirectional spectrophotometric detector is also disclosed.Above-mentioned unidirectional spectrophotometric detector can realize the unidirectional detection of the photodetector with two optical fiber.
Description
Technical field
The present invention relates to optic communication device, particularly relate to the manufacture method of a kind of unidirectional spectrophotometric detector and a kind of unidirectional spectrophotometric detector.
Background technology
Unidirectional spectrophotometric detector (Tap-PD) is a kind of device for measuring unidirectional light signal strength at optical communication field.In traditional photodetector, in order to multiplexing device or other objects, two optical fiber usually all can be used as the input and output of light signal, and now two optical fiber is reciprocity on status, light signal from any optical fiber input, and can be detected by photo-detector at end.And in some occasions, but need to shield the input of a wherein optical fiber.Traditional photodetector can not accomplish this point.
Summary of the invention
Based on this, be necessary to provide a kind of unidirectional spectrophotometric detector that can realize unidirectional detection in the photodetector of two optical fiber.
A kind of manufacture method of unidirectional spectrophotometric detector is provided in addition.
A kind of unidirectional spectrophotometric detector, comprise bidirectional optical fiber assembly and photo-detector, described bidirectional optical fiber assembly has two fiber ports for inputing or outputing light signal, and also have and to reflect light signal and the half-reflecting half mirror of transmission, described photo-detector and half-reflecting half mirror are oppositely arranged, reflected and transmission at described half-reflecting half mirror place through described bidirectional optical fiber assembly from the light signal of one of them input of described two fiber ports, exported from another of described two fiber ports by the light that reflects, the light be transmitted is received by described photo-detector, also single optical fiber calibrator is provided with between described half-reflecting half mirror and photo-detector, described single optical fiber calibrator exports the light signal of one of them input from described two fiber ports to described photo-detector, and the light signal of another input from described two fiber ports is shielded described photo-detector.
Wherein in an embodiment, described single optical fiber calibrator comprises collimation lens and single fiber tail optical fiber.
Wherein in an embodiment, described collimation lens is C-lens.
Wherein in an embodiment, described single fiber tail optical fiber adopts ceramic material.
Wherein in an embodiment, the insertion loss of described bidirectional optical fiber assembly and single optical fiber calibrator is all less than 0.5db.
A manufacture method for unidirectional spectrophotometric detector, comprises the steps: good to two fine tail optical fiber, the first collimation lens and half-reflecting half mirror assembly and adjustment and bonding for bidirectional optical fiber assembly; By single fiber tail optical fiber, the second collimation lens assembly and adjustment good and bonding be single fiber collimating apparatus; By described bidirectional optical fiber assembly and single fiber collimating apparatus coupling and bonding; Bonding bidirectional optical fiber assembly and single fiber collimating apparatus are coupled with photo-detector and encapsulate.
Wherein in an embodiment, described first collimation lens is G-lens, and described second collimation lens is C-lens.
Wherein in an embodiment, described single fiber tail optical fiber adopts ceramic material, described just bidirectional optical fiber assembly and the coupling of single fiber collimating apparatus and bonding after, grinding and polishing is carried out to the end face of described single fiber tail optical fiber.
Wherein in an embodiment, the insertion loss of described bidirectional optical fiber assembly and single optical fiber calibrator is all less than 0.5db.
In above-mentioned unidirectional spectrophotometric detector, from the light signal of light signal after bidirectional optical fiber assembly of any one input of two fiber ports through single optical fiber calibrator or be allowed through, or conductively-closed.The light signal be wherein allowed through is received by photo-detector.From the light signal then conductively-closed of another root optical fiber input, cannot be received by photo-detector, thus achieve unidirectional detection.
Accompanying drawing explanation
Fig. 1 is a kind of longitudinal sectional drawing of traditional two-way spectrophotometric detector;
Fig. 2 is the unidirectional spectrophotometric detector cut-open view of an embodiment.
Embodiment
As shown in Figure 1, be a kind of longitudinal sectional drawing of traditional two-way spectrophotometric detector.This two-way spectrophotometric detector 10 comprises a bidirectional optical fiber assembly 110 and photo-detector 120.
Bidirectional optical fiber assembly 110 comprises two fine tail optical fiber 112, collimation lens 114 and half-reflecting half mirror 116.Two fine tail optical fiber 112 is the sleeve pipes with two optical fiber, and two optical fiber are fixed in sleeve pipe abreast and extend.The front end (one end be coupled with collimation lens 114) of two fine tail optical fiber 112 is polished into the inclined-plane with certain inclination angle.The end face that collimation lens 114 is relative with two fine tail optical fiber 112 is same is polished into the inclined-plane with certain inclination angle, adaptive with the inclined-plane of two fine tail optical fiber 112.The other end of collimation lens 114 is sphere.Incident light can carry out reflecting and transmission by half-reflecting half mirror 116 in proportion.
Pass through two fine tail optical fiber 112 and collimation lens 114 successively from the light signal of a wherein input of above-mentioned two optical fiber, one end outgoing of self-focus lens 114 sphere, is reflected and transmission in proportion by half-reflecting half mirror 116 then.Wherein reflected light signal is got back to collimation lens 114 and is exported through another root optical fiber.The light signal of transmission is then received by photo-detector 120.The position of above-mentioned two optical fiber is reciprocity, also namely from a wherein optical fiber input optical signal, can export from another root optical fiber.So all can be detected by photo-detector 120 from arbitrary optical fiber input optical signal of two optical fiber.This uses and inconvenience in some cases.
For solving the problem, provide the unidirectional spectrophotometric detector of an embodiment.As shown in Figure 2, be the unidirectional spectrophotometric detector cut-open view of an embodiment.This unidirectional spectrophotometric detector 20 comprises bidirectional optical fiber assembly 210, single optical fiber calibrator 220 and photo-detector 230.
Bidirectional optical fiber assembly 210 comprises two fine tail optical fiber 212, first collimation lens 214 and half-reflecting half mirror 216.Two fine tail optical fiber 212 is the sleeve pipes with two optical fiber, and two optical fiber are fixed in sleeve pipe abreast and extend.The front end (one end be coupled with the first collimation lens 214) of two fine tail optical fiber 212 is polished into the inclined-plane with certain inclination angle.The end face that first collimation lens 214 is relative with two fine tail optical fiber 212 is same is polished into the inclined-plane with certain inclination angle, adaptive with the inclined-plane of two fine tail optical fiber 212.The other end of the first collimation lens 214 is sphere.Incident light can carry out reflecting and transmission by half-reflecting half mirror 216 in proportion.First collimation lens 214 is G-lens.
The overall insertion loss (insert loss, IL) of bidirectional optical fiber assembly 210 is less than 0.5dB.
Single optical fiber calibrator 220 comprises the second collimation lens 221 and single fiber tail optical fiber 223.Second collimation lens 221 is C-lens, and its one end is sphere, other end polishing for have certain inclination angle inclined-plane and overall be column.Single fiber tail optical fiber 224 adopts ceramic material, and is also polished into the inclined-plane with certain inclination angle in the one end be coupled with the second collimation lens 221, adaptive with the second collimation lens 221.
The overall insertion loss of single optical fiber calibrator 220 is also less than 0.5dB.
Pass through two fine tail optical fiber 212 and collimation lens 214 successively from the light signal of a wherein input of above-mentioned two optical fiber, one end outgoing of self-focus lens 214 sphere, is reflected and transmission in proportion by half-reflecting half mirror 216 then.Wherein reflected light signal is got back to collimation lens 214 and is exported through another root optical fiber.The light signal of transmission is then after single optical fiber calibrator 220 or be allowed through, or conductively-closed.The light signal be wherein allowed through is received by photo-detector 120.From the light signal then conductively-closed of another root optical fiber input, cannot be received by photo-detector 230, thus achieve unidirectional detection.
With reference to figure 2, above-mentioned unidirectional spectrophotometric detector adopts following steps manufacture.
Step S101: by good to two fine tail optical fiber, the first collimation lens and half-reflecting half mirror assembly and adjustment and bonding be bidirectional optical fiber assembly.Two fine tail optical fiber 212 is the sleeve pipes with two optical fiber, and two optical fiber are fixed in sleeve pipe abreast and extend.The front end (one end be coupled with the first collimation lens 214) of two fine tail optical fiber 212 is polished into the inclined-plane with certain inclination angle.The end face that first collimation lens 214 is relative with two fine tail optical fiber 212 is same is polished into the inclined-plane with certain inclination angle, adaptive with the inclined-plane of two fine tail optical fiber 212.The other end of the first collimation lens 214 is sphere.Incident light can carry out reflecting and transmission by half-reflecting half mirror 216 in proportion.First collimation lens 214 is G-lens.The overall insertion loss (insert loss, IL) of bidirectional optical fiber assembly 210 is less than 0.5dB.
Step S102: by single fiber tail optical fiber, the second collimation lens assembly and adjustment good and bonding be single fiber collimating apparatus.Single optical fiber calibrator 220 comprises the second collimation lens 221 and single fiber tail optical fiber 223.Second collimation lens 221 is C-lens, and its one end is sphere, other end polishing for have certain inclination angle inclined-plane and overall be column.Single fiber tail optical fiber 224 adopts ceramic material, and is also polished into the inclined-plane with certain inclination angle in the one end be coupled with the second collimation lens 221, adaptive with the second collimation lens 221.The overall insertion loss of single optical fiber calibrator 220 is also less than 0.5dB.
Step S103: by described bidirectional optical fiber assembly and single fiber collimating apparatus coupling and bonding.Bonding complete after grinding and polishing is carried out to the end face of described single fiber tail optical fiber.
Step S104: bonding bidirectional optical fiber assembly and single fiber collimating apparatus are coupled with photo-detector and encapsulate.
Pass through two fine tail optical fiber 212 and collimation lens 214 successively from the light signal of a wherein input of above-mentioned two optical fiber, one end outgoing of self-focus lens 214 sphere, is reflected and transmission in proportion by half-reflecting half mirror 216 then.Wherein reflected light signal is got back to collimation lens 214 and is exported through another root optical fiber.The light signal of transmission is then after single optical fiber calibrator 220 or be allowed through, or conductively-closed.The light signal be wherein allowed through is received by photo-detector 230.From the light signal then conductively-closed of another root optical fiber input, cannot be received by photo-detector 230, thus achieve unidirectional detection.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (5)
1. a unidirectional spectrophotometric detector, comprise bidirectional optical fiber assembly and photo-detector, described bidirectional optical fiber assembly has two fiber ports for inputing or outputing light signal, and also have and to reflect light signal and the half-reflecting half mirror of transmission, described photo-detector and half-reflecting half mirror are oppositely arranged, reflected and transmission at described half-reflecting half mirror place through described bidirectional optical fiber assembly from the light signal of one of them input of described two fiber ports, exported from another of described two fiber ports by the light that reflects, the light be transmitted is received by described photo-detector, it is characterized in that, also single optical fiber calibrator is provided with between described half-reflecting half mirror and photo-detector, described single optical fiber calibrator exports the light signal of one of them input from described two fiber ports to described photo-detector, and the light signal of another input from described two fiber ports is shielded described photo-detector,
Described single optical fiber calibrator comprises collimation lens and single fiber tail optical fiber;
Described collimation lens is C-lens;
Described single fiber tail optical fiber adopts ceramic material.
2. unidirectional spectrophotometric detector according to claim 1, is characterized in that, the insertion loss of described bidirectional optical fiber assembly and single optical fiber calibrator is all less than 0.5db.
3. a manufacture method for unidirectional spectrophotometric detector, comprises the steps:
By good to two fine tail optical fiber, the first collimation lens and half-reflecting half mirror assembly and adjustment and bonding be bidirectional optical fiber assembly;
By single fiber tail optical fiber, the second collimation lens assembly and adjustment good and bonding be single fiber collimating apparatus;
By described bidirectional optical fiber assembly and single fiber collimating apparatus coupling and bonding;
Bonding bidirectional optical fiber assembly and single fiber collimating apparatus are coupled with photo-detector and encapsulate;
Described first collimation lens is G-lens, and described second collimation lens is C-lens.
4. the manufacture method of unidirectional spectrophotometric detector according to claim 3, it is characterized in that, described single fiber tail optical fiber adopts ceramic material, described by bidirectional optical fiber assembly and the coupling of single fiber collimating apparatus and bonding after, grinding and polishing is carried out to the end face of described single fiber tail optical fiber.
5. the manufacture method of unidirectional spectrophotometric detector according to claim 3, is characterized in that, the insertion loss of described bidirectional optical fiber assembly and single optical fiber calibrator is all less than 0.5db.
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| CN201310213680.0A CN103323105B (en) | 2013-05-31 | 2013-05-31 | Unidirectional spectrophotometric detector and manufacture method thereof |
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| CN105071854A (en) * | 2015-08-03 | 2015-11-18 | 中国人民解放军理工大学 | Single-light-source full-duplex retro-modulating wireless optical communication device and method |
| CN108761671A (en) * | 2018-06-29 | 2018-11-06 | 昂纳信息技术（深圳）有限公司 | A kind of compact Tap PD |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846577A (en) * | 2010-06-18 | 2010-09-29 | 珠海保税区光联通讯技术有限公司 | Passive optical fiber sensor and optical fiber detection system |
| CN102364364A (en) * | 2011-11-22 | 2012-02-29 | 福州百讯光电有限公司 | Single-wavelength and single-fiber bidirectional light transceiving module assembly |
| CN202563130U (en) * | 2012-04-28 | 2012-11-28 | 上海中科股份有限公司 | One-way Tap-PD detector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040208442A1 (en) * | 2003-04-20 | 2004-10-21 | Pactonix, Inc. | Optical signal parameter monitor based on integrated tapping platform |
| JP2009009042A (en) * | 2007-06-29 | 2009-01-15 | Sunx Ltd | Optical fiber sensor head and method for manufacturing the same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846577A (en) * | 2010-06-18 | 2010-09-29 | 珠海保税区光联通讯技术有限公司 | Passive optical fiber sensor and optical fiber detection system |
| CN102364364A (en) * | 2011-11-22 | 2012-02-29 | 福州百讯光电有限公司 | Single-wavelength and single-fiber bidirectional light transceiving module assembly |
| CN202563130U (en) * | 2012-04-28 | 2012-11-28 | 上海中科股份有限公司 | One-way Tap-PD detector |
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