CN202094899U - Dispersion compensation module based on multi-fiber collimator device - Google Patents
Dispersion compensation module based on multi-fiber collimator device Download PDFInfo
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- CN202094899U CN202094899U CN2011202298110U CN201120229811U CN202094899U CN 202094899 U CN202094899 U CN 202094899U CN 2011202298110 U CN2011202298110 U CN 2011202298110U CN 201120229811 U CN201120229811 U CN 201120229811U CN 202094899 U CN202094899 U CN 202094899U
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Abstract
The utility model discloses a dispersion compensation module based on a multi-fiber collimator device. The dispersion compensation module based on a multi-fiber collimator device comprises a plurality of GT etalon devices, wherein the plurality of GT etalon devices are connected in a cascading manner. Each GT etalon device comprises a GT etalon and a multi-fiber (four, six, eight or more) collimator. Each pair of transmit-receive port fiber cables of the multi-fiber collimator is welded in a series manner, such that optical signals pass by the same GT etalon for many times so as to realize multi-time multiplication of dispersion and keep bandwidth of dispersion unchanged. The dispersion compensation module based on a multi-fiber collimator device exhibits a large adjustable dispersion scope, is short in response time, simple in structure, small in volume, high in control precision, convenient in realization, etc.
Description
Technical field
The utility model relates to optical-fibre communications field, relates in particular to a kind of dispersion compensation module that is applied to optical WDM communication system.
Background technology
In the 10G/40G optical communication system, the 1550nm system is in long Distance Transmission at present, and as 40km, 60km and 80km have accumulated very big chromatic dispersion, and chromatic dispersion can reach 2400ps/nm.Because the adjustable dispersion compensating module will satisfy requirement of broad dispersion bandwidth and super large scope dispersion compensation, therefore cost height, control complexity need use fixed dispersion compensation module and adjustable dispersion compensating module simultaneously.The adjustable dispersion compensating module can provide dynamic dispersion tuning in the light territory, is used for managing at the relevant effect of dispersion of high speed communication network time domain.Tunable Dispersion Compensator can compensate the dispersion variation in the transmission link dynamically, is the desirable adjustable dispersion compensating technology of 10G/40G system; But flexible management chromatic dispersion.Can be used in receiving terminal and be used for tunable dispersion, perhaps be used for the 40Gb/s transmission link, or the synchronous dispersion compensation in the dynamic 10Gb/s DWDM network.The adjustable dispersion compensating module of the market mainstream is two kinds, and a kind of is the optical module of integrated multi-channel fiber Bragg grating technology and circulator, and another kind is the optical module of cascade GT etalon.And the GT etalon device of the optical module institute cascade of cascade GT etalon is generally the device based on double-fiber collimator, requiring under the situation of big dispersion compensation, realize by the more GT etalon of cascade often, not only increase the module volume greatly, and increased manufacturing cost and difficulty of processing.
Summary of the invention
For overcoming the problems referred to above, the utility model proposes a kind of dispersion compensation module based on many optical fiber (4 or 6 or 8 etc.) collimater device, regulate that dispersion range is big, simple in structure, volume is little, control precision is high, be convenient to realize.
For achieving the above object, the technical scheme that the utility model proposed is: a kind of dispersion compensation module based on the multiple optical fiber collimating device, the GT etalon device that comprises a plurality of cascades, each GT etalon device comprises a GT etalon and one four optical fiber collimator; The port one, two of described four optical fiber collimators is a pair of transmitting-receiving port, and port three, four is that another is to the transmitting-receiving port; The optical fiber cable of described port two is connected with the optical fiber cable welding of port three, and port one and port four are respectively input/output port; The output port of previous stage four optical fiber collimators is freely connected with the input port of back one-level four optical fiber collimators, the port one of the first order four optical fiber collimators is the input port of dispersion compensation module, and the port four of afterbody four optical fiber collimators is the output port of dispersion compensation module.
Further, described four optical fiber collimators can be substituted by the 2m optical fiber collimator, and m is the integer greater than 2.
Further, this dispersion compensation module also can increase a plurality of hot modulators, and is corresponding one by one with described GT etalon, is arranged at respectively on the GT etalons at different levels, is used for thermal conditioning GT etalon, improves the degree of regulation of this dispersion compensation module.
The beneficial effects of the utility model: a kind of dispersion compensation module of the present utility model based on the multiple optical fiber collimating device, utilize many optical fiber (4 or 6 or 8 etc.) collimater to make light signal repeatedly by single GT etalon, thereby obtain repeatedly group delay accumulation and dispersion range multiplication, and dispersion bandwidth is constant; This structure has that the adjustable dispersion scope is big, the response time short, simple in structure, volume is little, control precision is high, be convenient to advantages such as realization.
Description of drawings
Fig. 1 is that the utility model compares schematic diagram based on the GT etalon of four optical fiber collimators and the group delay multiplication of prior art;
Fig. 2 is the dispersion compensation module cascade structure schematic diagram of the utility model based on four optical fiber collimator devices.
101,102,103,10n GT etalon label declaration:;
201,202,203,20n four optical fiber collimators;
301,302,303, the hot modulator of 30n;
11, the n1 port one; 12, the n2 port two; 13, the n3 port three; 14, the n4 port four.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
As shown in Figure 2, be embodiment one of the present utility model, a kind of dispersion compensation module based on four optical fiber collimator devices, formed by the cascade of a plurality of GT etalon device, each GT etalon device is mainly by a GT etalon 101,102,103 ... 10n and one four optical fiber collimator 201,202,203 ... 20n constitutes; Four optical fiber collimators 201,202,203 ... the port 1 of 20n, n1 and port 2 12, n2 are a pair of transmitting-receiving port, and port 3 13, n3 and port 4 14, n4 are that another is to the transmitting-receiving port; The optical fiber cable of port 2 12, n2 is connected with the optical fiber cable welding of port 3 13, n3, and port 1, n1 are input port, and port 4 14, n4 are output port.With the first order is example, light signal is from port one 11 inputs, behind GT etalon 101, receive by port 2 12, port 2 12 is connected with port 3 13, light signal is received by port 4 14 through same GT etalon 101 backs once more via port 3 13, port 4 14 is connected with the input port of four optical fiber collimators 202 of next stage, light signal is imported into the GT etalon 102 of next stage.So, after cascade repeatedly, light signal is finally by the output port port four n4 output of four optical fiber collimator 20n of afterbody.
The dispersion compensation module of this structure utilizes four optical fiber collimators 201,202,203 ... 20n makes light signal pass through same GT etalon 101,102,103 twice ... 10n, thereby realize the multiplication of group delay accumulation, reduce the number of device, reduced cost.Because four optical fiber collimators 201,202,203 ... 20n manufacturing process maturation, two pairs of alternate angle differences can be controlled to very little scope, therefore at GT etalon 101,102,103 ... the group delay effect difference that two pairs of light paths among the 10n produce is very little, can think the equivalence, after the series connection of two pairs of transmitting-receiving port optical fiber cables, can obtain the double group delay accumulation and the dispersion range of multiplication, and dispersion bandwidth is constant.Be illustrated in figure 2 as based on the GT etalon of four optical fiber collimators with based on the group delay multiplication of the GT etalon of double-fiber collimator schematic diagram relatively.
Four optical fiber collimators 201,202,203 in the present embodiment ... 20n also can be replaced by 2m optical fiber collimators such as six fibers collimaters, and wherein m is the integer greater than 2.Same, each of six fibers collimater be to transmitting-receiving port optical fiber cable welding series connection, stay down an input port and an output port respectively with the output port and the input port cascade of front and back.So, can make light signal repeatedly pass through same GT etalon, realize the repeatedly multiplication of chromatic dispersion.
For controlling dispersion compensation more accurately, can on each GT etalon, add a hot modulator 301,302,303 respectively ... 30n is used for regulating compensation GT etalon 101,102,103 ... the effective cavity length of 10n.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; in the spirit and scope of the present utility model that do not break away from appended claims and limited; the various variations that the utility model is made are protection range of the present utility model in the form and details.
Claims (3)
1. dispersion compensation module based on the multiple optical fiber collimating device comprises the GT etalon device of a plurality of cascades, and it is characterized in that: each GT etalon device comprises a GT etalon and one four optical fiber collimator; The port one, two of described four optical fiber collimators is a pair of transmitting-receiving port, and port three, four is that another is to the transmitting-receiving port; The optical fiber cable of described port two is connected with the optical fiber cable welding of port three, and port one and port four are respectively input/output port; The output port of previous stage four optical fiber collimators is freely connected with the input port of back one-level four optical fiber collimators, the port one of the first order four optical fiber collimators is the input port of dispersion compensation module, and the port four of afterbody four optical fiber collimators is the output port of dispersion compensation module.
2. a kind of dispersion compensation module based on the multiple optical fiber collimating device as claimed in claim 1 is characterized in that: described four optical fiber collimators are substituted by the 2m optical fiber collimator, and m is the integer greater than 2.
3. a kind of dispersion compensation module based on the multiple optical fiber collimating device as claimed in claim 1 or 2 is characterized in that: also comprise a plurality of hot modulators, and corresponding one by one with described GT etalon, be arranged at respectively on the GT etalons at different levels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202298110U CN202094899U (en) | 2011-07-01 | 2011-07-01 | Dispersion compensation module based on multi-fiber collimator device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202298110U CN202094899U (en) | 2011-07-01 | 2011-07-01 | Dispersion compensation module based on multi-fiber collimator device |
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| CN202094899U true CN202094899U (en) | 2011-12-28 |
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| CN2011202298110U Expired - Fee Related CN202094899U (en) | 2011-07-01 | 2011-07-01 | Dispersion compensation module based on multi-fiber collimator device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103427908A (en) * | 2012-04-28 | 2013-12-04 | 诺方（哈尔滨）科技股份有限公司 | Dispersion compensator and wave separator with same |
-
2011
- 2011-07-01 CN CN2011202298110U patent/CN202094899U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103427908A (en) * | 2012-04-28 | 2013-12-04 | 诺方（哈尔滨）科技股份有限公司 | Dispersion compensator and wave separator with same |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20180701 |
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| CF01 | Termination of patent right due to non-payment of annual fee |