CN202551036U

CN202551036U - Multi-channel multiplexed optical channel monitoring structure

Info

Publication number: CN202551036U
Application number: CN2012201281494U
Authority: CN
Inventors: 胡豪成; 吴砺; 李阳
Original assignee: Photop Technologies Inc
Current assignee: Photop Technologies Inc
Priority date: 2012-03-30
Filing date: 2012-03-30
Publication date: 2012-11-21
Anticipated expiration: 2022-03-30

Abstract

The utility model relates to the technical field of optical communication, and discloses a multi-channel multiplexed optical channel monitoring structure, which comprises an optical channel monitoring module, an optical switching unit and a control circuit; optical switches of one multiplied by N are adopted in the optical switching unit; the optical channel monitoring module comprises m optical detecting elements; wherein N is the number of optical channels; m is an integer no less than 1 but no more than N; and the control circuit is used for controlling the optical switching unit to couple optical signals of channels needing to be detected to the optical detecting elements of the optical channel monitoring module. By adopting the structure, adjustable connection control of different channels and optical detecting elements can be realized by one optical switching unit, that is, interconnection of different channels with the optical channel monitoring module can be realized when states need to be monitored, therefore, the function of multiplexing one optical channel monitoring module by multiple optical channels can be realized, the cost of monitoring of a single optical channel can be reduced, and economic benefits can be improved effectively. Moreover, the monitoring module has a simple and stable structure and low cost.

Description

A kind of multichannel composite optical channel monitoring structure

Technical field

The utility model relates to the optical communication technique field, relates in particular to a kind of multichannel composite optical channel monitoring structure.

Background technology

Current, constituted the basic physics layer of whole communication network based on the optical transfer network of dense wave division multipurpose (DWDM).In order to satisfy DWDM The Application of Technology and upgrading, can on-line monitoring optical channel performance module become the focus of current a lot of device company research and development.According to the difference of device function task, the optical channel monitoring module can be divided into OCM (Optical channel monitor) and OPM (Optical performance monitor) or the like again.Passage luminous power as the OCM product is mainly used in dwdm system is kept watch on, OSNR is kept watch on, and typical OPM module can on-line monitoring passage luminous power, centre wavelength and OSNR indexs such as (OSNR), have more additional function relatively.The typical application instance of optical channel monitoring module in dwdm system is as shown in Figure 1.By seeing in this system that an optical channel monitoring module only is used for the monitoring of an optical channel in system among the figure.And the optical channel monitoring module still is a high-end relatively optical-electric module on market at present, costs an arm and a leg.For the merchant of system, network is not perhaps established in the upgrading of big specification if desired, faces very big cost pressure relatively yet.If can effectively reduce the optical channel monitoring cost of single passage, obviously can effectively increase economic efficiency.

Summary of the invention

The utility model proposes a kind of multichannel composite optical channel monitoring structure, realizes the multiplexing common optical channel monitoring module of a plurality of optical channels, reduces the cost of single optical channel monitoring.

For achieving the above object, the technical scheme that the utility model proposed is: a kind of multichannel composite optical channel monitoring structure comprises optical channel monitoring module, light crosspoint and control circuit; Said smooth crosspoint is 1 * N optical switch; Said optical channel monitoring module comprises m optical detection device; Said N is the optical channel number; Said m is more than or equal to 1, and is less than or equal to the integer of N; Said control circuit control light crosspoint is coupled to the passage light signal of required monitoring on the optical detection device of optical channel monitoring module.

Further, said m is less than N, and said 1 * N optical switch comprises convergent lens and MEMS speculum, is integrated in the optical channel monitoring module; Said control circuit control MEMS speculum rotates; And when m equated with N, said 1 * N optical switch comprised convergent lens and MEMS speculum, and the MEMS speculum also can be substituted by stationary mirror, is integrated in the optical channel monitoring module.

Further, said optical detection device is PD or APD.

Further, said 1 * N optical switch also can be made up of convergent lens and PLZT pottery.

The beneficial effect of the utility model: a kind of multichannel composite optical channel monitoring module of the utility model; That utilizes that a light crosspoint realizes different passages and optical detection device adjustablely is connected control; Realize that promptly different passages are when needing monitoring state and the interconnecting of optical channel monitoring module; Thereby realize the function of the multiplexing common optical channel monitoring module of a plurality of optical channels, reduced the cost of single optical channel monitoring, can effectively increase economic efficiency; And this monitoring modular is simple in structure, stable, cost is low.

Description of drawings

Fig. 1 is the existing application of optical channel monitoring module in dwdm system;

Fig. 2 is the structured flowchart of the utility model composite optical channel monitoring structure;

Fig. 3 is the utility model composite optical channel monitoring structure embodiment one;

Fig. 4 is the utility model composite optical channel monitoring structure embodiment two.

Description of symbols: 1, convergent lens; 2, MEMS speculum; 3, optical detection device.

Embodiment

Below in conjunction with accompanying drawing and embodiment, the utility model is further specified.

Be illustrated in figure 2 as the structured flowchart of the utility model composite optical channel monitoring structure, this structure comprises optical channel monitoring module, light crosspoint and control circuit; Wherein the light crosspoint is 1 * N optical switch, and the optical channel monitoring module comprises m optical detection device; N is the optical channel number; M is more than or equal to 1, and is less than or equal to the integer of N; Control circuit control light crosspoint is coupled to the passage light signal of required monitoring on the optical detection device of optical channel monitoring module.The core of this structure is that utilize that a light crosspoint realizes different passages and optical detection device adjustable is connected control; Realize that promptly different passages are when needing monitoring state and the interconnecting of optical channel monitoring module; Thereby realize the function of the multiplexing common optical channel monitoring module of a plurality of optical channels, reduced the cost of single optical channel monitoring.

Consider in the practical application that to the requirement and the useful life of passage switch speed, wherein 1 * N optical switch serves as preferred with MEMS platform and PLZT platform.As shown in Figure 3, be an embodiment of the utility model, wherein 1 * N optical switch comprises convergent lens 1 and MEMS speculum 2, is integrated in the optical channel monitoring module; Control circuit control MEMS speculum rotates.The light signal of each passage input converges on the MEMS speculum 2 through convergent lens 1, through the corner of control circuit control MEMS speculum 2, with the light signal incision optical detection device 3 of respective channel.In this structure, during the light signal of different passages incision optical detection device 3,,, can realize monitoring to any passage so only need accurately control MEMS speculum 2 corners corresponding to different MEMS speculum 2 corners.

The port detection of considering single optical detection device 3 among Fig. 3 is subject to the passage sweep speed easily; And each channel monitoring data can't parallel processing; Can be in the optical channel monitoring module integrated a plurality of optical detection devices, like the optical detection device of m among Fig. 43, wherein 1≤m≤N.When the number of optical detection device 3 equates with the optical channel number, promptly during m=N, MEMS speculum 2 can be substituted by stationary mirror, and this moment, this structure was the monitoring of fixed end mouth, monitored the performance of all passages in real time.When the number of optical detection device 3 is less than the optical channel number; When being m less than N (this moment general select to make N be the multiple of m); The corner of control circuit control MEMS speculum 2, its mode of operation can be chosen as each channel packet, by group each channel signal light is reflexed to and respectively organizes on the optical detection device; This moment, this structure was similarly the scanning port monitoring, but its sweep spacing is far smaller than the structure of single optical detection device among Fig. 3.

This structure is integrated in light crosspoint and optical detection device in the optical channel monitoring module, and structure is compact more.Wherein optical detection device serves as preferential with PD or APD, and is simple in structure, stable, cost is low.

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 utility model that does not break away from appended claims and limited; In form with details on various variations that the utility model is made, be the protection range of the utility model.

Claims

1. a multichannel composite optical channel monitoring structure comprises the optical channel monitoring module, it is characterized in that: also comprise light crosspoint and control circuit; Said smooth crosspoint is 1 * N optical switch; Said optical channel monitoring module comprises m optical detection device; Said N is the optical channel number; Said m is more than or equal to 1, and is less than or equal to the integer of N; Said control circuit control light crosspoint is coupled to the passage light signal of required monitoring on the optical detection device of optical channel monitoring module.

2. a kind of according to claim 1 multichannel composite optical channel monitoring structure is characterized in that: said m is less than N, and said 1 * N optical switch comprises convergent lens and MEMS speculum, is integrated in the optical channel monitoring module; Said control circuit control MEMS speculum rotates.

3. a kind of according to claim 1 multichannel composite optical channel monitoring structure is characterized in that: said m equates that with N said 1 * N optical switch comprises convergent lens and MEMS speculum or stationary mirror, is integrated in the optical channel monitoring module.

4. a kind of according to claim 1 multichannel composite optical channel monitoring structure, it is characterized in that: said optical detection device is PD or APD.

5. a kind of according to claim 1 multichannel composite optical channel monitoring structure is characterized in that: said 1 * N optical switch comprises convergent lens and PLZT pottery.