CN205334021U

CN205334021U - Light amplifier of integrated DCM function

Info

Publication number: CN205334021U
Application number: CN201620074335.2U
Authority: CN
Inventors: 杨建华
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-26
Filing date: 2016-01-26
Publication date: 2016-06-22
Anticipated expiration: 2026-01-26

Abstract

The utility model belongs to the technical field of optical transmission equipment and specifically relates to a light amplifier of integrated DCM function, which comprises a housin, one side of casing is provided with first input interface, and the opposite side is provided with first output interface, inside integrated of first pump laser, first er -doped fiber, the integrated piece of a DCM, second pump laser, second er -doped fiber and the 2nd DCM that be provided with of casing, first er -doped fiber is connected with first input interface, and integrated piece of first er -doped fiber, a DCM, second er -doped fiber, integrated of the 2nd DCM and first output interface is consecutive connects, first pump laser links to each other with first er -doped fiber, the second pump laser links to each other with the second er -doped fiber. Through enlarge step by step many times, the enlargement range of light signal is less at every turn, and the loss of production is less, and easy control. Enlargied the back at the light signal, utilize the integrated piece of DCM to carry out the chromatic dispersion compensation, ensured signal transmission's accuracy.

Description

A kind of image intensifer of integrated DCM function

Technical field

This utility model relates to optical transmission device field, the image intensifer of especially a kind of integrated DCM function。

Background technology

Generally speaking, long haul communication transmission is primarily referred to as non-relay and that distance is more than 100km transmission communication。For common transmission system owing to attenuation, dispersion etc. affect, fiber-optic transfer inevitably exists must loss, so must on common communication system basis in addition necessary improvement supplement the requirement that can be only achieved long haul communication transmission, therefore utilize light to put equipment, the optical signal that SDH equipment is sent is amplified, so can be prevented effectively from fiber-optic transfer because signal attenuation is to very weak and cause signal frame to be lost and produce the problem such as error code, guarantee the smooth transport of optical signal, be finally reached increase optical signal transmission distance。

Fiber amplifier is the optical amplifier that optical signal is made directly amplification by optical fiber telecommunications system。Most frequently used in long span communication is exactly erbium-doped fiber amplifier (EDFA), is the fiber amplifier being most widely used at present。Mainly by this medium of Er-doped fiber, pump light is input in bait fibre, now, signal photon passes through Er-doped fiber, a large amount of and self identical photon is produced under stimulated radiation effect effect, make signal photon increase rapidly, so can be obtained by the optical signal constantly amplified at outfan。Owing to EDFA is that the energy accumulation carried out in area of light aspect is amplified, so it possesses following advantage: gain is high, it is roomy to be with, output is high, pumping efficiency is high。

Concrete application site according to EDFA, EDFA-BA and EDFA-PA, EDFA-BA can be subdivided into again and be also called power amplifier, mainly be used in transmitting pusher side in order to improve transmitting power, EDFA-PA is also called preamplifier, in order to promote the receiving sensitivity of circuit before being mainly used in receiver。Both image intensifers are disposable multiplying arrangement, and enlargement range is not easily controlled。

Utility model content

Technical problem to be solved in the utility model is to provide a kind of control enlargement range and is easy to control, and can reduce the image intensifer of the integrated DCM function of light loss。

This utility model solve its technical problem be the technical scheme is that, the image intensifer of a kind of integrated DCM function, including housing, the side of described housing is provided with the first input interface, and opposite side is provided with the first output interface；Described enclosure interior is provided with the first pump laser, the first Er-doped fiber, a DCM integration member, the second pump laser, the second Er-doped fiber and the 2nd DCM integration member, described first Er-doped fiber and the first input interface are connected, and the first Er-doped fiber, a DCM integration member, the second Er-doped fiber, the 2nd DCM integration member and the first output interface are sequentially connected and connect；Described first pump laser and the first Er-doped fiber are connected, and described second pump laser and the second Er-doped fiber are connected。

Further, described surface of shell is provided with one group of working station indicator。

Further, described housing is provided with the second input interface, 0 the 3rd Er-doped fiber, the 3rd DCM integration member, the 4th Er-doped fiber, the 4th DCM integration member and the second output interface, described second input interface, the 3rd Er-doped fiber, the 3rd DCM integration member, the 4th Er-doped fiber, the 4th DCM integration member and the second output interface are sequentially connected and connect, described first pump laser and the 3rd Er-doped fiber are connected, and described second pump laser and the 4th Er-doped fiber are connected。

Further, described housing is provided with one group of louvre。

The beneficial effects of the utility model are: pump laser is used for producing pump light, and by pump light input to corresponding Er-doped fiber。When signal photon is from the first input interface transmission to the first Er-doped fiber, carry out first time amplification；Then through the second Er-doped fiber, carry out second time and amplify。By repeatedly amplifying step by step, the enlargement range of each optical signal is less, and the loss of generation is less, and is easily controlled。After optical signal is exaggerated, DCM integration member is utilized to carry out dispersion compensation, it is ensured that it is accurate that signal transmits。

Accompanying drawing explanation

Fig. 1 is schematic diagram of the present utility model。

Detailed description of the invention

Below in conjunction with drawings and Examples, this utility model is further illustrated。

As it is shown in figure 1, the image intensifer of a kind of integrated DCM function of the present utility model, including housing 10, the side of described housing 10 is provided with the first input interface 11, and opposite side is provided with the first output interface 12；Described housing 10 is internally provided with the first pump laser the 20, first Er-doped fiber the 30, the oneth DCM integration member the 40, second pump laser the 50, second Er-doped fiber 60 and the 2nd DCM integration member 70, described first Er-doped fiber 30 is connected with the first input interface 11, and first Er-doped fiber the 30, the oneth DCM integration member the 40, second Er-doped fiber the 60, the 2nd DCM integration member 70 and the first output interface 12 are sequentially connected and connect；Described first pump laser 20 is connected with the first Er-doped fiber 30, and described second pump laser 50 is connected with the second Er-doped fiber 60。

Pump laser is used for producing pump light, and by pump light input to corresponding Er-doped fiber。When signal photon transmits to the first Er-doped fiber 30 from the first input interface 11, carry out first time amplification；Then through the second Er-doped fiber 60, carry out second time and amplify。By repeatedly amplifying step by step, the enlargement range of each optical signal is less, and the loss of generation is less, and is easily controlled。After optical signal is exaggerated, a DCM integration member 40 and a DCM integration member 70 is utilized to carry out dispersion compensation, it is ensured that it is accurate that signal transmits。This device, except above-mentioned two-stage is amplified, it is also possible to be three grades of amplifications。Level Four amplification etc.。

For the ease of judgment device whether normal operation, described housing 10 surface configuration has one group of working station indicator 13。

In order to the optical signal in multiple optical fiber being amplified simultaneously, described housing 10 is provided with the second input interface 14, 3rd Er-doped fiber 31, 3rd DCM integration member 41, 4th Er-doped fiber 61, 4th DCM integration member 71 and the second output interface 15, described second input interface 14, 3rd Er-doped fiber 31, 3rd DCM integration member 41, 4th Er-doped fiber 61, 4th DCM integration member 71 and the second output interface 15 are sequentially connected and connect, described first pump laser 20 is connected with the 3rd Er-doped fiber 31, described second pump laser 50 is connected with the 4th Er-doped fiber 61。Utilize the first pump laser 20 and the second pump laser 50 to provide pump light to many group amplifying circuits simultaneously, reduce number of components, reduce cost, make device small volume and less weight。The quantity of amplifying circuit can also be three groups, four groups etc., selects according to demand。

In order to reduce the temperature within housing 10, described housing 10 is provided with one group of louvre 16。

The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations。All within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model。

Claims

1. the image intensifer of an integrated DCM function, it is characterised in that: including housing (10), the side of described housing (10) is provided with the first input interface (11), and opposite side is provided with the first output interface (12)；Described housing (10) is internally provided with the first pump laser (20), the first Er-doped fiber (30), a DCM integration member (40), the second pump laser (50), the second Er-doped fiber (60) and the 2nd DCM integration member (70), described first Er-doped fiber (30) is connected with the first input interface (11), and the first Er-doped fiber (30), a DCM integration member (40), the second Er-doped fiber (60), the 2nd DCM integration member (70) and the first output interface (12) are sequentially connected and connect；Described first pump laser (20) is connected with the first Er-doped fiber (30), and described second pump laser (50) is connected with the second Er-doped fiber (60)。

2. the image intensifer of a kind of integrated DCM function as claimed in claim 1, it is characterised in that: described housing (10) surface configuration has one group of working station indicator (13)。

3. the image intensifer of a kind of integrated DCM function as claimed in claim 1, it is characterized in that: described housing (10) is provided with the second input interface (14), 3rd Er-doped fiber (31), 3rd DCM integration member (41), 4th Er-doped fiber (61), 4th DCM integration member (71) and the second output interface (15), described second input interface (14), 3rd Er-doped fiber (31), 3rd DCM integration member (41), 4th Er-doped fiber (61), 4th DCM integration member (71) and the second output interface (15) are sequentially connected and connect, described first pump laser (20) is connected with the 3rd Er-doped fiber (31), described second pump laser (50) is connected with the 4th Er-doped fiber (61)。

4. the image intensifer of a kind of integrated DCM function as claimed in claim 1, it is characterised in that: described housing (10) is provided with one group of louvre (16)。