A kind of high integration multichannel array fiber amplifier
Technical field:
The invention belongs to optical transport field, particularly a kind of high integration multichannel array fiber amplifier.
Background technology:
Along with the sharply increase of Internet Users, the interface type adopted when core/convergence router wide area is interconnected is all POS (Packet over SONET/SDH) interface, data switching center needs every passage light signal to carry out light splitting by a certain percentage (as 1:1:1:7,2:8 etc.), decompose work such as carrying out data acquisition, flow control, data cleansing, content analysis.Luminous power on the one hand owing to getting off along separate routes from main road is little, for realizing normally receiving light signal, needs to carry out luminous power amplification; Light mouth quantity is many on the other hand, and equipment amount is very huge; Be badly in need of a kind of equipment and can solve small-signal luminous power scale-up problem along separate routes, solve the problem of the aspect such as volume, power consumption, cost that number of devices multi-band is come simultaneously again.
The information being disclosed in this background technology part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention:
The object of the present invention is to provide a kind of high integration multichannel array fiber amplifier, thus overcome above-mentioned defect of the prior art.
For achieving the above object, the invention provides
A kind of high integration multichannel array fiber amplifier, comprising: input light detection module, control circuit, light amplification array, output light adjustment module; Described light amplification array is made up of N road light amplification array element, described light amplification array element comprise connect successively input, the 1550nm wave band optical splitter of 1X2, erbium fine amplifying unit, output; Described input light detection module comprises 1550nm wave band splicer, the input PD of 1XN, and described 1550nm wave band splicer connects the 1550nm wave band optical splitter in N road light amplification array element, and described input PD is connected with 1550nm wave band splicer; Described output light adjustment module comprises 980nm pump laser, the 980nm wave band optical splitter of 1X2, the 980nm wave band optical splitter of 1XN, output PD, described pump laser is connected with the 980nm wave band optical splitter of 1X2, the 980nm wave band optical splitter of described 1X2 respectively with the 980nm wave band optical splitter of 1XN, export PD and be connected; Described control circuit respectively with input PD, export PD, pump laser is connected.
Preferably, in technical scheme, N is the even number of >=4.
Compared with prior art, the present invention has following beneficial effect:
N (N >=4 and be even number) road light amplification array element shares 1 pump laser, and volume is little, integrated level is high; Output optical power is adjustable, turns off pumping without during input light, and any road has during input light opens pumping, reduces energy consumption.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention;
Main Reference Numerals illustrates:
The fine amplifying unit of the 1550nm wave band optical splitter of 1-1X2,2-erbium, the 1550nm wave band splicer of 3-1XN, 4-input PD, 5-980nm pump laser, the 980nm wave band optical splitter of 6-1X2, the 980nm wave band optical splitter of 7-1XN, 8-output PD, 9-control circuit.
Embodiment:
Below the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole specification and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or part, and do not get rid of other element or other part.
As shown in Figure 1, a kind of high integration multichannel array fiber amplifier, comprising: input light detection module, control circuit 9, light amplification array, output light adjustment module; Described light amplification array is made up of N road light amplification array element, described light amplification array element comprise connect successively input, the 1550nm wave band optical splitter 1 of 1X2, erbium fine amplifying unit 2, output, described 1550nm wave band optical splitter 1 splitting ratio is 2/98; Described input light detection module comprises 1550nm wave band splicer 3, the input PD4 of 1XN, described 1550nm wave band splicer 3 connects the 1550nm wave band optical splitter 1 in N road light amplification array element, described input PD4 is connected with 1550nm wave band splicer 3 by optical fiber, and the 1550nm wave band splicer 3 of described 1XN is even splitting ratio; Described output light adjustment module comprises 980nm pump laser 5, the 980nm wave band optical splitter 6 of 1X2, the 980nm wave band optical splitter 7 of 1XN, output PD8, described pump laser 5 is connected with the 980nm wave band optical splitter 6 of 1X2 by optical fiber, the 980nm wave band optical splitter 6 of described 1X2 by optical fiber respectively with the 980nm wave band optical splitter 7 of 1XN, export PD8 and be connected, 980nm wave band optical splitter 6 splitting ratio of described 1X2 is 1/99, and the 980nm wave band optical splitter 7 of described 1XN is even splitting ratio; Described control circuit 9 by electrical signal line respectively with input PD4, export PD8, pump laser 5 is connected.
Every road input light passes through the 1550nm wave band splicer 3 of a 1XN by the tributary signal light of 1550nm wave band optical splitter 1 light splitting of 1X2, gather and be incorporated into input PD4, thus realize the N road shared PD of input light to detect input light, realize all turning off pump laser 5 without during input light, there is the Based Intelligent Control of opening pump laser 5 during input light on any road; Input light turns off threshold might be set, and user can from Row sum-equal matrix according to actual conditions.By the 980nm wave band optical splitter 7 of a 1XN, the light that pump laser 5 sends is divided into N road and is injected into the fine amplifying unit 2 of every road erbium respectively, realize the fine amplifying unit 2 of N road erbium and share a pump laser 5.The light splitting of pump laser 5 main road connects and exports PD8, detects pumping bright dipping, thus forms FEEDBACK CONTROL with control circuit 9 and realize Output optical power Intelligent adjustment, and user can according to actual conditions from Row sum-equal matrix Output optical power value.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.