CN2504834Y - Novel interleaver device - Google Patents
Novel interleaver device Download PDFInfo
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- CN2504834Y CN2504834Y CN01262751U CN01262751U CN2504834Y CN 2504834 Y CN2504834 Y CN 2504834Y CN 01262751 U CN01262751 U CN 01262751U CN 01262751 U CN01262751 U CN 01262751U CN 2504834 Y CN2504834 Y CN 2504834Y
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- beam splitting
- utility
- model
- splitting chip
- ring cavity
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- 239000000758 substrate Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000003595 spectral effect Effects 0.000 abstract description 12
- 238000002955 isolation Methods 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 abstract description 4
- 238000001228 spectrum Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000000411 transmission spectrum Methods 0.000 description 1
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Abstract
The utility model discloses a novel inter-leaver device used in the fiber communication. The utility model is used in composite waves and partial waves of optical signals of a highly dense channel. By combining a MZI with a ring cavity, the utility model is provided with the advantages of outputting spectral lines with good broadened bandwidth, high isolation degree and outputting spectral lines with flat tops. Furthermore, the spectrum free path in the ring cavity is adjustable, which makes the utility model work under an atrocious environment. Therefore, the utility model is not only free from affections by temperature changes and optical signal source changes but also is convenient in production, installation and regulation.
Description
Technical field
The utility model belongs to optical-fibre communications field, and is especially relevant with the wavelength division multiplexer of intensive light.
Background technology
General dense wave division multiplexer is by being merged into the light signal with narrower channel spacing to the light signal with broad channel spacing, perhaps the light signal of very narrow channel spacing is resolved into the light signal with broad channel spacing, that realizes light signal closes ripple and partial wave.Interleaver is a kind of of dense wave division multiplexer, its basic principle is: the interference pattern that the principle of interference of using up interferes the wavelength of the cyclical signal that is produced to repeat integral multiple output by control is selected suitable combination of frequency output, and the spectrum of being exported is the uniformly-spaced spectrum of pectination ripple.For example: full optical fiber mach--behind the interleaver cascade of Zehnder interferometer (MZI) type, its transmission spectral line-0.5dB place can obtain good broadening, but its shortcoming is: polarization associated loss (PDL) is big, has a strong impact on the contrast of signal, and the making rate of finished products is low.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, and device fabrication is easy with assembling, the spectral line top flat, and isolation is big, tunable novel interleaver device.
The purpose of this utility model reaches like this: it comprises that two total reflective mirrors, three beam splitting chips, phase compensation sheet and substrate form; Wherein, three beam splitting chips and a phase compensation sheet are formed the MZI light path, and the middle beam splitting chip in two total reflective mirrors and above-mentioned three beam splitting chips is formed the ring cavity of light path.
The purpose of this utility model can also so further reach, and promptly two total reflective mirror devices can be at vertical cube on the substrate of adjusted at one; The splitting ratio of the preceding beam splitting chip of above-mentioned three beam splitting chips and back beam splitting chip was made as 50: 50, and the splitting ratio of middle beam splitting chip was made as 11: 89.
More than be provided with, promptly MZI makes utility model compare with MZI with the combination of ring cavity to have the advantage that the broadband broadening is good, contrast is good.Because two total reflective mirrors are adjustable, thus control spectrum free path (FSR), and make this device in process and assemble and debugging, be more prone to, convenient.The setting of the splitting ratio of beam splitting chip makes the utility model odd-even channel even, transmission spectral line top flat.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is a light channel structure schematic diagram of the present utility model.
Fig. 2 is a transmission spectral line illustration of the present utility model.
Embodiment
Referring to Fig. 1, optical routing one typical MZI of the present utility model forms in conjunction with a ring cavity, and MZI is by input collimater 101, output collimator 102,103, and beam splitting chip is preceding beam splitting chip 104, middle beam splitting chip 105, beam splitting chip 106 afterwards, and phase compensation sheet 107 compositions.Ring cavity is made up of middle beam splitting chip 105, total reflection sheet 108,109, and the completely reflecting mirror device is on a substrate 110.This vertically transfer of substrate 110.
Its operation principle is as follows, on the beam splitting chip 104, is divided into two bundles before optical signals input collimater 101 goes into to transport to, and a branch of being incident upon on the phase compensation sheet 107 reflexes on the beam splitting chip 106 of back then; On the beam splitting chip 105, it was further divided into two bundles during another Shu Ze was incident upon, and one enters in the ring cavity, and through total reflective mirror 108,109, retroeflection is to middle beam splitting chip 105, and its part goes out ring cavity, and a part is in interior circulation; Second it be incident upon back beam splitting chip 106, and promptly by the light signal that is incident upon on the middle beam splitting chip 105 on the beam splitting chip 106 of back, a part is come to ring cavity, a part is that direct beam splitting is come out, and the light signal on the beam splitting chip of back then becomes coherent light, be divided into two bundles, by output collimator 102,103 outputs.
On technology, the light intensity splitting ratio of preceding beam splitting chip 104, back beam splitting chip 106 is 50: 50, and the light intensity splitting ratio of middle beam splitting chip is 11: 89, and beam splitting chip, phase compensation sheet install respectively on substrate 110, are coated with anti-reflection film as required, spectro-film, high-reflecting film.Input collimater 101 adopts low-angle incident (8 °), thereby has limited polarization associated loss (PDL) well.
Referring to Fig. 2, shown in it is output collimator 102 (strange channel), output collimator 103 (even channel), the output spectral line of two-port (solid line is represented 102 ports output spectral line, and dotted line is represented 103 ports output spectral line) finds out obviously that therefrom the desirable parity channel of spectral line of the utility model transmission is even, isolation is big, reach-90dB spectral line top flat, ripple-free.-0.5dB bandwidth reaches 0.7nm.
These parameters has surpassed present used wavelength division multiplexer.As; The product of the disclosed Avanex of U.S. Patent number 6169828 company; The product of the disclosed Chorum of U.S. Patent number 6137606 company.
In sum, the utility model has been owing to adopted the light channel structure of MZI coupling collar an actor's rendering of an operatic tune, and beam splitting chip is provided with rational splitting ratio, make the utlity model has the transmission spectrum tape spread wide good, isolation is high, the advantage of spectral line top flat.In addition,, FSR can be regulated, like this, make device also therefore simple, convenient in processes such as processing, debugging because two total reflective mirrors in the ring cavity are arranged to adjustable type.
Claims (3)
1. novel interleaver device, comprise preceding beam splitting chip (104), middle beam splitting chip (105), back beam splitting chip (106), and phase compensation sheet (107), they form MZI, it is characterized in that middle beam splitting chip (105) and total reflective mirror (108), (109) constitute ring cavity, promptly ring cavity combines by middle beam splitting chip (105) with MZI; Light signal through in after beam splitting chip (105) enters ring cavity, circle transmission in ring cavity, again through in beam splitting chip (105) enter in the MZI.
2. a kind of novel interleaver device according to claim 1, it is characterized in that total reflective mirror (108), (109) but be fixed on the substrate (110) of vertical adjustment.
3. a kind of novel interleaver device according to claim 1 and 2 is characterized in that the light intensity splitting ratio of preceding beam splitting chip (104), back beam splitting chip (106) is 50: 50, and the splitting ratio of middle beam splitting chip (105) is 11: 89.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01262751U CN2504834Y (en) | 2001-09-11 | 2001-09-11 | Novel interleaver device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01262751U CN2504834Y (en) | 2001-09-11 | 2001-09-11 | Novel interleaver device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2504834Y true CN2504834Y (en) | 2002-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01262751U Expired - Lifetime CN2504834Y (en) | 2001-09-11 | 2001-09-11 | Novel interleaver device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2504834Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011063750A1 (en) * | 2009-11-25 | 2011-06-03 | 华为技术有限公司 | Optical demodulator |
| CN110501737A (en) * | 2019-07-03 | 2019-11-26 | 上海卫星工程研究所 | A kind of absorption-type spectral line target source method of selecting |
-
2001
- 2001-09-11 CN CN01262751U patent/CN2504834Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011063750A1 (en) * | 2009-11-25 | 2011-06-03 | 华为技术有限公司 | Optical demodulator |
| US8411350B2 (en) | 2009-11-25 | 2013-04-02 | Huawei Technologies Co., Ltd. | Optical demodulator |
| CN110501737A (en) * | 2019-07-03 | 2019-11-26 | 上海卫星工程研究所 | A kind of absorption-type spectral line target source method of selecting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110911 Granted publication date: 20020807 |