CN203025381U

CN203025381U - WDM (Wavelength Division Multiplexing) module

Info

Publication number: CN203025381U
Application number: CN 201320025474
Authority: CN
Inventors: 吴砺; 徐云兵; 蔡宏铭; 何亮
Original assignee: Photop Technologies Inc
Current assignee: Photop Technologies Inc
Priority date: 2013-01-16
Filing date: 2013-01-16
Publication date: 2013-06-26
Anticipated expiration: 2023-01-16

Abstract

The utility model discloses a WDM (Wavelength Division Multiplexing) module. The WDM module comprises a glass substrate, one or two groups of collimator arrays and an optical fiber collimator, wherein output light of collimators of the collimator arrays is parallel. The WDM module is characterized in that two light through surfaces of the glass substrate are parallel to each other, two or more WDM diaphragms capable of passing through light of different wavelengths are bound to either or both of the two light through surfaces, and dual-wedge-angle sheets are arranged on light paths of the output light of the collimators. Due to the adoption of the technical scheme, according to the WDM module disclosed by the utility model, the collimator arrays with parallel output light are adopted to adjust, so that the manufacturing difficulty of the WDM module is reduced; and the WDM module has the characteristics of compact structure, easiness in assembly, high reliability and the like.

Description

A kind of WDM module

Technical field

The utility model relates to the passive device of optical-fibre communications field, especially a kind of WDM module of cramped construction.

Background technology

Present common WDM module mostly adopts light channel structure as shown in Figure 1, connects and consist of CWDM and DWDM module in the WDM unit that adopts namely that double-fiber collimator and single optical fiber calibrator and WDM diaphragm consist of.In Fig. 1,101,102,103 ... 10n is for consisting of double-fiber collimator, single optical fiber calibrator and the WDM diaphragm of WDM unit, and the shortcoming of this structure is that each passage differential loss correlativity is large, and volume is larger.

Designed at present monolithic CWDM and the DWDM of multiple tight structure for said structure, wherein most typical scheme is US Patent No. P5, shown in 586,683.Fig. 2 is US Patent No. P5,586,683 fundamental diagram, in figure, 66 is a parallel glass blocks, and on the logical light face in both sides, diverse location is coated with the WDM film of different wave length, and 8 is one group of collimating apparatus from passage 1 to passage, receive back reflective, the different wave length that sees through.Similarly also has some other patent with this, but these structure basic ideas are all that one group of WDM diaphragm is fixed on a metal support or parallel plate, at the light of the single wavelength that sees through with one group of single collimator reception WDM, the assembly difficulty of various structures is all larger.

Summary of the invention

For the problems referred to above, the purpose of this utility model is to provide a kind of compact conformation, is easy to assembling, the WDM module that reliability is high.

For achieving the above object, the technical scheme that the utility model proposes is: a kind of WDM module, comprise a glass matrix, one group or two groups of collimator arrays, an optical fiber collimator, in described collimator array, the output light of contained collimating apparatus is parallel to each other separately, it is characterized in that: two logical light faces of described glass matrix are parallel to each other, in described two logical light faces, one or both sides are bonded with the WDM diaphragm that can see through different wavelengths of light more than two or two, and the light path of the output light of described collimating apparatus is provided with the folding wedge gusset plate.

Further, described collimator array is the collimator array of the output parallel light of use microlens array making.

Further, described WDM diaphragm in-depth optical cement is on the glass matrix.

Further, the side of described WDM diaphragm is by on glue bond and glass matrix.

Further, the logical light face bonding of the glue of the employing high permeability of described WDM diaphragm and glass matrix.

Further, described folding wedge gusset plate is fixed on glass tube or metal tube.

Further, collimating apparatus spacing d=2Hs in θ in described collimator array〉d0; Wherein H is that between the WDM diaphragm of two sides, vertical range is H, and θ is the angle between reflected light and reflecting surface normal, and d0 is the contained collimating apparatus spacing of collimator array minimum value.

Adopting technique scheme, WDM module described in the utility model to adopt output light is that the collimator array of directional light is regulated, and will reduce the manufacture difficulty of WDM module; And have compact conformation, be easy to assembling, the reliability high.

Description of drawings

Fig. 1 is the light channel structure figure of existing WDM module;

Fig. 2 is US Patent No. P5,586,683 fundamental diagrams;

Fig. 3 is the utility model two ends export structure schematic diagram;

Fig. 4 is the utility model Single-end output example schematic;

Fig. 5 is WDM diaphragm bonding way schematic diagram of the present invention;

Fig. 6 is another bonding way schematic diagram of WDM diaphragm of the present invention;

Fig. 7 is another bonding way schematic diagram of WDM diaphragm of the present invention;

Fig. 8 is collimator array of the present invention and the bonding schematic diagram of folding wedge gusset plate.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described further.

As shown in Figure 3, a kind of WDM modular structure, wherein 301 is the glass matrixs that logical light face is parallel to each other, and 302 is optical fiber collimator, and 304 is the WDM diaphragm, and 303 is the contained collimating apparatus in collimator array, 305 is the folding wedge gusset plate.As shown in Figure 3, in collimator array, the output light of contained collimating apparatus 302 is parallel to each other separately, two logical light faces of glass matrix 301 are parallel to each other, described two logical light faces are bonded with the WDM diaphragm 304 that can see through different wavelengths of light more than two or two, and the light path of the output light of described collimating apparatus 303 is provided with folding wedge gusset plate 305.In Fig. 3, between the WDM diaphragm of two sides, vertical range is H, D is the vertical range between adjacent two directional lights, also adjacent two collimating apparatus spacings, θ is the angle between reflected light and reflecting surface normal, d=2Hs in θ, and the contained collimating apparatus spacing of collimator array d has a minimum value d0, so must select suitable θ and H to make d greater than d0.The utility model also can adopt the structure of Single-end output, as shown in Figure 4.

Further, described first collimator array and the second collimator array are the collimator array of the output parallel light of use microlens array making.

The utility model adopts three kinds of modes WDM diaphragm that bonds, and specifically sees Fig. 5, Fig. 6, Fig. 7.In Fig. 5,501 is the WDM diaphragm, and 502 is the glass matrix, and 503 is glue, be WDM diaphragm 501 be by in WDM diaphragm 501 sides bondings with glass matrix 502, realize that the light path end face is glue-free, in Fig. 6,601 is the WDM diaphragm, 602 is the glass matrix, 603 is 601 and 602 surface of contact, and this two sides is by in-depth optical cement bonding, and so-called in-depth optical cement is about to two optical surfaces and at high temperature interpenetrates diffusion between molecule and form the water-based bonding.In Fig. 7,701 is the WDM diaphragm, and 702 is the glass matrix, and 703 is high permeability glue, namely uses high permeability glue 703 that the logical light face of WDM diaphragm 701 and glass matrix 702 is bonding, realizes that light path has glue.

As shown in Figure 8, between collimating apparatus and folding wedge gusset plate, adhesive structure is seen Fig. 8,801 is the contained collimating apparatus of collimator array, 802 is the folding wedge gusset plate, 803 is glass tube or metal tube, folding wedge gusset plate, 802 use glue are fixed in glass tube or metal tube 803, and glass tube or metal tube 803 stick with glue knot on collimating apparatus 801 output light light paths.

Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; within not breaking away from the spirit and scope of the present utility model that appended claims limits; in the form and details the utility model is made a variety of changes, be protection domain of the present utility model.

Claims

1. WDM module, comprise a glass matrix, one group or two groups of collimator arrays, an optical fiber collimator, in described collimator array, the output light of contained collimating apparatus is parallel to each other separately, it is characterized in that: two logical light faces of described glass matrix are parallel to each other, in described two logical light faces, one or both sides are bonded with the WDM diaphragm that can see through different wavelengths of light more than two or two, and the light path of the output light of described collimating apparatus is provided with the folding wedge gusset plate.

2. a kind of WDM module according to claim 1 is characterized in that: described collimator array is the collimator array of the output parallel light that uses microlens array and make.

3. a kind of WDM module according to claim 1 is characterized in that: described WDM diaphragm in-depth optical cement is on the glass matrix.

4. a kind of WDM module according to claim 1, it is characterized in that: the side of described WDM diaphragm is by on glue bond and glass matrix.

5. a kind of WDM module according to claim 1, is characterized in that: the logical light face bonding of the glue of the employing high permeability of described WDM diaphragm and glass matrix.

6. a kind of WDM module according to claim 1, it is characterized in that: described folding wedge gusset plate is fixed on glass tube or metal tube.

7. a kind of WDM module according to claim 1, is characterized in that: collimating apparatus spacing d=2Hsin θ in described collimator array〉d0; Wherein: H is that between the WDM diaphragm of two sides, vertical range is H, and θ is the angle between reflected light and reflecting surface normal, and d0 is the contained collimating apparatus spacing of collimator array minimum value.