CN207965238U

CN207965238U - A kind of optical filter box and the optical device structure using the component

Info

Publication number: CN207965238U
Application number: CN201721496000.0U
Authority: CN
Inventors: 和文娟; 郑庆立; 汪钦; 张莉
Original assignee: Wuhan Telecommunication Devices Co Ltd
Current assignee: Wuhan Telecommunication Devices Co Ltd
Priority date: 2017-11-10
Filing date: 2017-11-10
Publication date: 2018-10-12
Anticipated expiration: 2027-11-10

Abstract

The utility model discloses the optical device structures of a kind of optical filter box and the use component, a kind of optical filter box, including light splitting piece and optical filter, the side of the light splitting piece or optical filter is cut into fixed angle, and the light splitting piece and optical filter are assembled into one at fixed angle.A kind of optical device structure, including laser TO CAN, detector TO CAN, tube body and optical filter box described above, laser TO CAN, detector TO CAN are packaged as a whole by tube body, the optical filter box after integration be placed in tube body for by incident beam after optical filter box incidence detector TO CAN.Light splitting piece and optical filter are assembled into the structure of an entirety, reduce the assembling difficulty of device, the requirement on machining accuracy to pipe structure is also reduced, production efficiency is improved while improving installation accuracy, while improving the isolation index at product detector end.

Description

A kind of optical filter box and the optical device structure using the component

Technical field

It is used for the utility model is related to technical field of photo communication more particularly to a kind of optical filter box and using the component The light path coupled structure of 10G CSFP+ optical devices, the structure can significantly improve optical device receptivity, while make optical device knot Structure is compacter.

Background technology

Wider optical mode block type SFP (Small Formfactor Pluggable, small package hot plug) is applied at present Series of modules product, there is that double-fiber is two-way and two kinds of single fiber bi-directional, there are one single-optical fiber bi-directional transceiver part inside single-fiber bidirectional module, Structure (such as Figure 1A) based on traditional single-fiber bidirectional device, can only place a single-fiber bidirectional device in a SFP module, by In the limited amount that single-fiber bidirectional device is arranged in the module, data throughout has been unable to meet demand.With various hot spots The rise of application and to optical module product low cost, the further demand of high link capacity, needs more to minimize information, handle up Measure the optical transceiver module of bigger.

In traditional structure, optical filter 3 is built in detector TO-CAN structures, the light path as shown in Figure 1A is through 45 ° of (texts Middle the angled angle referred both to transmitting light path) WDM light splitting pieces 4 arrive detector TO CAN 2 after reflecting, and the method lacks Point has certain operation difficulty first, working hour work efficiency is relatively low；Become larger second is that light after lens converge, assembles angular, is isolated Degree reduces, third, detector TO CAN2 sizes are larger, is unfavorable for realizing miniaturization.

Chinese patent 201120158789.5 " pipe structure of single-fiber bidirectional device " (Fig. 2) proposes, by 0 ° of optical filter 4 In the limiting slot of tube body 5, the isolation of detector is this method increased, the disadvantage is that adding to the tube body for placing optical filter 4 Work requires higher, this structure can only use powder metallurgy to process at present, be difficult to realize in mach tube body, and reducing Effect is little in terms of device size.

Utility model content

In view of the above problems, the main purpose of the utility model is to provide a kind of novel filter schemes, by this skill Light splitting piece and optical filter are assembled into the structure of an entirety by art scheme.Integral structure reduces single fiber bi-directional structure device The assembling difficulty of part and detector TO CAN, also reduces the requirement on machining accuracy to pipe structure, is improving installation accuracy While improve production efficiency.The isolation index at product detector end is improved simultaneously.

In order to achieve the above objectives, the utility model is realized in this way：

The side of a kind of optical filter box, including light splitting piece and optical filter, the light splitting piece or optical filter is cut into solid Determine angle, the light splitting piece and optical filter are assembled into one at fixed angle.

Wherein, fixed angle formed by the light splitting piece and optical filter is ranging between 30 ° to 60 °.

Wherein, fixed angle formed by the light splitting piece and optical filter is 45 °.

Wherein, the optical filter is coated with reflectance coating.

Wherein, light splitting piece and optical filter are assembled into one by way of bonding at fixed angle.

A kind of optical device structure, including laser TO CAN, detector TO CAN, tube body and filter set described above Part, laser TO CAN, detector TO CAN are packaged as a whole by tube body, and the optical filter box after integration is put Set in tube body for by incident beam after optical filter box incidence detector TO CAN.

Wherein, the step for fixing optical filter box is provided in the tube body.

Wherein, laser TO CAN, detector TO CAN are located at two adjacent perpendicular end surfaces of tube body, in institute It is 45 ° to state the step gradient made on tube body, and the fixed angle that the light splitting piece in the optical filter box is in optical filter is 45 °, the optical filter box is pasted onto on step.

Wherein, laser TO CAN, detector TO CAN are located at two adjacent perpendicular end surfaces of tube body, in institute It is 77 ° to state the step gradient made on tube body, and the fixed angle that the light splitting piece in the optical filter box is in optical filter is 45 °, the optical filter box is pasted onto on step, and the optical filter surface in the optical filter box is coated with reflectance coating.

The technique effect that the utility model reaches is as follows：

1. optical filter and light splitting piece, one of side is cut into fixed angle, by optical filter and light splitting piece at fixed angles Degree bonds together, angular deviation caused by being bonded on tube body mounting groove before avoiding, precision higher；

2. using integral structure, solving optical filter light splitting piece separated structure in current single fiber bi-directional structure must use More accurate light channel structure may be implemented with machined structures in the problem of powdered metal part.

3. optical filter bonding is assembled (such as Fig. 3) to be directly placed into tube body after a component, assembly difficulty is reduced, is improved The working hour work efficiency of installation；

4. compared with traditional optical filter is placed on inside TO CAN, incidence angle smaller improves detector end isolation Performance.

5. the mode overall dimensions smaller of integral component reduces device size, meets the size requirements of CSFP+ devices.

Description of the drawings

Figure 1A, Figure 1B are the light channel structure schematic diagram that ° optical filter is set to 0 in routine TO structures；

Fig. 2 is the device using powder metallurgy tube body, and 0 ° of optical filter is changed to the light path in round and square tube body by TO inside configurations Structural schematic diagram；

Fig. 3 A, Fig. 3 B are the device light channel structure schematic diagram using the utility model optical filter box；

Fig. 4 is schematic diagram of application structure of the integrated component in NGPON 2；

1- laser TO CAN；2- detector TO CAN；3- optical filters；4- light splitting pieces；5- tube bodies；6- optical filter boxes.

Specific implementation mode

Specific embodiment in the utility model is described in further details below in conjunction with the accompanying drawings.

Embodiment 1

The utility model is applied on free space light path single fiber pair/three-dimensional device, and as shown in Figure 3A, 1 is laser TO CAN, 2 be detector TO CAN, and the two is packaged as a whole by tube body 5, and is located at orthogonal two ends of tube body 5 In face.By the way that the side of light splitting piece 4 or optical filter 3 in optical filter box 6 is cut into 45 ° of fixed angle, then will divide Mating plate 4 is pasted together with optical filter 3 in 45 ° of angles.45 ° of steps are made on the tube body 5 of optical device, by optical filter 4 bonding partially of light splitting piece of 45 ° of component 6 on step (text in institute it is angled refer both to emit light path angle), laser light For beam by 0 ° of optical filter 3 after 45 ° of light splitting pieces 4 reflect, the maximum angle of laser beam and optical filter 3 is beam divergence angle θ 2, Relative to θ in Figure 1B 1, the relative angle with optical filter 3 is reduced, improves optically isolated degree.Simultaneously relative to Figure 1A and Fig. 2, Occupied space smaller, while machined metal part can be used, improve machining accuracy.And the program and existing device level work Skill platform is completely compatible.

Embodiment 2

In NGPON2 device architectures, conventional structure cannot meet it is narrow interval transmitting-receiving wavelength insulated degree requirement, pass through by The side of light splitting piece 4 or optical filter 3 in optical filter box 6 is cut into 45 ° of fixed angle, then by light splitting piece 4 and optical filtering Piece 3 is pasted together in 45 ° of angles.Optical filter box 6 and Z axis are assembled at 77 ° or so, such as Fig. 4, laser beam is passed through along Z axis Light splitting piece 4 reflexes to optical filter 3, and detector TO CAN2 components are entered after optical filter 3 again secondary reflection.Due to light splitting piece 4 with 3 non-traditional angle of optical filter is pasted, and individually pastes very big into the difficulty in tube body 5, and optical device is successfully reduced using this component Assembly difficulty.

Finally it should be noted that：Described embodiment is only some embodiments of the present application, rather than whole realities Apply example.Based on the embodiment in the application, those of ordinary skill in the art are obtained without making creative work Every other embodiment, shall fall in the protection scope of this application.

Claims

1. a kind of optical filter box, which is characterized in that including light splitting piece and optical filter, the side of the light splitting piece or optical filter It is cut into fixed angle, the light splitting piece and optical filter are assembled into one at fixed angle.

2. a kind of optical filter box according to claim 1, which is characterized in that solid formed by the light splitting piece and optical filter Between clamp angular region is 30 ° to 60 °.

3. a kind of optical filter box according to claim 2, which is characterized in that solid formed by the light splitting piece and optical filter Clamp angle is 45 °.

4. a kind of optical filter box according to claim 1, which is characterized in that the optical filter is coated with reflectance coating.

5. a kind of optical filter box according to claim 1, which is characterized in that light splitting piece and optical filter are passed through bonding Mode is assembled into one at fixed angle.

6. a kind of optical device structure, which is characterized in that including laser TO CAN, detector TO CAN, tube body and claim 1-5 any one of them optical filter boxes, laser TO CAN, detector TO CAN are packaged as a whole by tube body, and one The optical filter box after body be placed in tube body for by incident beam after optical filter box incident detector TO CAN。

7. a kind of optical device structure according to claim 6, which is characterized in that be provided in the tube body for fixed filter The step of mating plate component.

8. a kind of optical device structure according to claim 7, which is characterized in that laser TO CAN, detector TO CAN is located at two adjacent perpendicular end surfaces of tube body, and the step gradient made on the tube body is 45 °, the optical filter The fixed angle that light splitting piece in component is in optical filter is 45 °, and the optical filter box is pasted onto on step.

9. a kind of optical device structure according to claim 7, which is characterized in that laser TO CAN, detector TO CAN is located at two adjacent perpendicular end surfaces of tube body, and the step gradient made on the tube body is 77 °, the optical filter The fixed angle that light splitting piece in component is in optical filter is 45 °, the optical filter box is pasted onto on step, and described Optical filter surface in optical filter box is coated with reflectance coating.