CN1658023A - Full fibre-optical light attenuator - Google Patents
Full fibre-optical light attenuator Download PDFInfo
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- CN1658023A CN1658023A CN 200410012733 CN200410012733A CN1658023A CN 1658023 A CN1658023 A CN 1658023A CN 200410012733 CN200410012733 CN 200410012733 CN 200410012733 A CN200410012733 A CN 200410012733A CN 1658023 A CN1658023 A CN 1658023A
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- optical fiber
- regulator
- attenuator
- fiber
- optical
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Abstract
A fiber attenuator, including the tiny-curled deformer composed of two plates with opposite and misaligned corrugated surfaces, the fiber that held between the reformer, the guide way, the adjuster, and the shell. The two terminals of the fiber are the input fiber and the output fiber. When the adjuster is working, it pushes the deformer to move along the guide way, and changes the curl degree of the fiber, so as to realize the adjustment of the brightness of the fiber signal and the adjustable light attenuating. There is a coating on the fiber, which improves the adaptability of the fiber to the external environment.
Description
The present invention is a kind of continuously adjustable full optical fiber optical optical attenuator.
Optical attenuator is a widely used passive device in the optical communication field.The purpose of this invention is to provide a kind of novel simple and reliable for structure, the attenuation accuracy height, the return loss height, Polarization Dependent Loss is little, continuous adjustable full optical fiber optical optical attenuator with low cost.
Basic structure of the present invention and principle of work are as follows:
Basic structure of the present invention comprises having relatively by two, and the bent forming device (1) that the plate of the corrugated surface that staggers mutually constitutes, optical fiber (2), guide rail (3), regulator (4) and a shell (5) that is clipped in the middle of the anamorphoser constitute.Two terminations of optical fiber (2) are respectively input optical fibre (6) and output optical fibre (7).When regulating the regulator action, regulator promotes the bent forming device along guide rail movement, changes the degree of crook of optical fiber, thereby realizes the modulation to signal light intensity in the optical fiber, realizes adjustable optical attenuation.Be covered with coating on the optical fiber, coating has effectively improved the optical fiber adaptive faculty of environment to external world.
Basic functional principle of the present invention is to utilize the microbending loss of optical fiber to realize continuously adjustable optical attenuation.When optical fiber produced bent forming because of certain reason, the part luminous energy of transmission wherein can produce leakage, thereby causes decay.Under different little curved states, the degree varies sample of energy leakage, the present invention utilizes this point to realize continuously adjustable optical attenuation just.
In this attenuator, a regulator that is used for the regulated attenuator damping capacity is arranged.According to actual needs, this regulator can be by screw rod, electrostriction material, and magnetostriction materials or other modes constitute.The adjusting of regulator can be by manually, motor, and voltage, magnetic field or alternate manner are finished.When regulating this regulator action, regulator promotes the bent forming device, make it along guide rail movement, and then change the wherein little curved degree of optical fiber, thereby realization realizes adjustable optical attenuation to the modulation of signal light intensity in the optical fiber.
For avoiding optical fiber by the damage of the undulatory tooth in the bent forming device, can be at filling flexible padded coaming around the optical fiber and in the backlash of bent forming device, to play a cushioning and protection.Perhaps adopt the pad of making by flexible material, and it is bonded on the undulatory tooth of bent forming device, when the bent forming device produced displacement, optical fiber was pushed by tooth, because the flexibility of pad, can make optical fiber produce flexural deformation equally and cause the variation of fiber middle light signal loss.
In this attenuator, described optical fiber (2) is a complete optical fiber, need not to aim at again.Thereby simplified production technology and flow process, reduced device cost.Also reduced simultaneously to have improved the reliability of system because unexpected factor causes the probability of fault.
In this attenuator, spacing, quantity and the degree of depth of the ripple by changing the bent forming device, and, can make this attenuator obtain different degree of regulation and different range of adjustment, thereby be applicable to various occasion by optical fiber being applied different initial deformations.And,, wherein do not contain any reflection end face, so have quite high return loss because this attenuator is full optical fibre device.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present invention.As shown in the figure, this attenuator is relative by having by two, and the bent forming device (1) that the plate of the corrugated surface that staggers mutually constitutes, optical fiber (2), guide rail (3), regulator (4) and a shell (5) that is clipped in the middle of the anamorphoser constitute.Two terminations of optical fiber (2) are respectively input optical fibre (6) and output optical fibre (7).In the said structure, also can be with the inwall of Guide Rail Design at shell.And, according to different demands, can utilize rotatable screw rod, electrostriction material, magnetostriction materials or other mode constitutes above-mentioned regulator, the regulative mode of regulator can adopt manual adjustments, motor-driven, voltage, electromagnetic field or other modes are finished, thereby are applicable to different occasions.
Claims (6)
1 full fibre optic attenuator comprises having relatively by two, and the bent forming device (1) that the plate of the corrugated surface that staggers mutually constitutes, optical fiber (2), guide rail (3), regulator (4) and a shell (5) that is clipped in the middle of the anamorphoser constitute.Two terminations of optical fiber (2) are respectively input optical fibre (6) and output optical fibre (7).
2 complete according to claim 1 fibre optic attenuators, it is characterized in that comprising have by two relative, the bent forming device (1) that plate constituted of the corrugated surface that staggers mutually and an optical fiber (2) that is clipped in the anamorphoser centre.
3 complete as claimed in claim 1 or 2 fibre optic attenuators is characterized in that utilizing the microbending loss of optical fiber to realize optical attenuation, and the damping capacity of attenuator can be regulated by the bent forming degree of regulating optical fiber.
4 as full fibre optic attenuator as described in claim 1 or 2 or 3, it is characterized in that having one to be used to regulate the regulator of damping capacity.Regulator can be by screw rod, electrostriction material, and magnetostriction materials or other modes constitute.The regulative mode of regulator can be by manually, motor, and voltage, magnetic field or alternate manner are finished.When regulating the regulator action, regulator promotes the bent forming device along guide rail movement, changes the little curved degree of optical fiber, thereby realizes the modulation to signal light intensity in the optical fiber, realizes adjustable optical attenuation.
5 as described in claim 1 or 2 or 3 or 4 full fibre optic attenuator, it is characterized in that the optical fiber in the attenuator is a complete optical fiber, need not to aim at.
6 as full fibre optic attenuator as described in claim 1 or 2 or 3 or 4, it is characterized in that ripple spacing, quantity and the degree of depth of bent forming device can be determined according to actual conditions, to be applicable to different occasions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012733 CN1658023A (en) | 2004-02-19 | 2004-02-19 | Full fibre-optical light attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012733 CN1658023A (en) | 2004-02-19 | 2004-02-19 | Full fibre-optical light attenuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1658023A true CN1658023A (en) | 2005-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410012733 Pending CN1658023A (en) | 2004-02-19 | 2004-02-19 | Full fibre-optical light attenuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1658023A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221374A (en) * | 2010-04-19 | 2011-10-19 | 西安金和光学科技有限公司 | Fiber sensing device for sensing torque parameters |
| CN104155753A (en) * | 2014-08-28 | 2014-11-19 | 成都美美通信技术有限公司 | Continuously-adjustable fiber optic attenuator |
| CN104155752A (en) * | 2014-08-28 | 2014-11-19 | 成都美美通信技术有限公司 | Optical fiber type variable optical attenuator |
| CN104181638A (en) * | 2014-08-28 | 2014-12-03 | 成都美美通信技术有限公司 | Easily-adjustable optical fiber attenuator |
| CN104181639A (en) * | 2014-08-28 | 2014-12-03 | 成都美美通信技术有限公司 | Easily-adjustable optical fiber attenuator |
| CN104865696A (en) * | 2015-05-27 | 2015-08-26 | 成都美美通信技术有限公司 | Simple type fiber signal attenuating device |
| CN105116495A (en) * | 2015-09-16 | 2015-12-02 | 成都美美通信技术有限公司 | Continuous changing type fiber optic attenuator |
| CN112082733A (en) * | 2020-08-31 | 2020-12-15 | 成都泰瑞通信设备检测有限公司 | Non-pressure optical fiber microbend additional loss testing device, testing system and testing method |
-
2004
- 2004-02-19 CN CN 200410012733 patent/CN1658023A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221374B (en) * | 2010-04-19 | 2015-07-15 | 西安金和光学科技有限公司 | Fiber sensing device for sensing torque parameters |
| CN102221374A (en) * | 2010-04-19 | 2011-10-19 | 西安金和光学科技有限公司 | Fiber sensing device for sensing torque parameters |
| CN104155753B (en) * | 2014-08-28 | 2016-04-27 | 成都美美通信技术有限公司 | Continuously adjustable fibre optic attenuator |
| CN104181638A (en) * | 2014-08-28 | 2014-12-03 | 成都美美通信技术有限公司 | Easily-adjustable optical fiber attenuator |
| CN104181639A (en) * | 2014-08-28 | 2014-12-03 | 成都美美通信技术有限公司 | Easily-adjustable optical fiber attenuator |
| CN104155752A (en) * | 2014-08-28 | 2014-11-19 | 成都美美通信技术有限公司 | Optical fiber type variable optical attenuator |
| CN104155752B (en) * | 2014-08-28 | 2016-04-20 | 成都美美通信技术有限公司 | A kind of optical fiber type variable optical attenuator |
| CN104155753A (en) * | 2014-08-28 | 2014-11-19 | 成都美美通信技术有限公司 | Continuously-adjustable fiber optic attenuator |
| CN104181639B (en) * | 2014-08-28 | 2017-02-15 | 成都美美通信技术有限公司 | Easily-adjustable optical fiber attenuator |
| CN104865696A (en) * | 2015-05-27 | 2015-08-26 | 成都美美通信技术有限公司 | Simple type fiber signal attenuating device |
| CN105116495A (en) * | 2015-09-16 | 2015-12-02 | 成都美美通信技术有限公司 | Continuous changing type fiber optic attenuator |
| CN105116495B (en) * | 2015-09-16 | 2018-04-24 | 成都美美通信技术有限公司 | A kind of fibre optic attenuator of consecutive variations |
| CN112082733A (en) * | 2020-08-31 | 2020-12-15 | 成都泰瑞通信设备检测有限公司 | Non-pressure optical fiber microbend additional loss testing device, testing system and testing method |
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| WD01 | Invention patent application deemed withdrawn after publication |