CN206178192U - Fine wavelength division multiplexing module of miniature tape trailer - Google Patents

Abstract

The utility model provides a fine wavelength division multiplexing module of miniature tape trailer, relate to the optical communication field, it includes an incident optical fiber collimater, eight emitting optical fiber collimaters, an optical substrate group, eight light filters, one the 1st rectangular prism and one the 2nd rectangular prism, incident optical fiber collimater and eight emitting optical fiber collimaters set up the front side in optical substrate group, a rectangular prism and the 2nd rectangular prism set up the rear side in optical substrate group, optical substrate group is including an optical substrate and two optical substrate of setting in optical substrate top. Compared with the prior art, this fine wavelength division multiplexing module of miniature tape trailer realizes the design of double -deck light path owing to utilize 2 rectangular prism's combination for overall product compact structure, other utilizes the combination of 2 optical substrate and 8 light filters, realize light and light -emitting port in the same one side of module, and the light path is parallel, is favorable to the use of module in equipment, the light path is retrencied, falls the low insertion loss value.

Description

A kind of miniature band tail optical fiber Wavelength division multiplexing module

Technical field

This utility model is related to optical communication field, particularly a kind of miniature band tail optical fiber Wavelength division multiplexing module.

Background technology

Traditional Wavelength division multiplexing module is connected using multiple wavelength division multiplex devices 101, as shown in figure 1, each Wavelength division multiplexer 101 can filter out one of flashlight, be by fused fiber splice node 102 between two wavelength division multiplexers It is together in series.After flashlight enters one of wavelength division multiplexer 101, a flashlight is will filter out, and other are believed The reflection of number light enters next wavelength division multiplex device through fused fiber splice node 102.By that analogy, wavelength-division function is completed.Conversely, It is then multiplexing function.

However, traditional Wavelength division multiplexing module due to using multiple wavelength division multiplex devices series connection by the way of, optical fiber itself Bending amplitude require and wavelength division multiplex device itself volume, cause its overall dimensions very big.Further, since it is through front There is synergistic effect in the reflection of the several wavelength division multiplexers in face, insertion loss, the below light on several roads in traditional Wavelength division multiplexing module Signal insertion loss performance can be than larger.

Utility model content

For the problem that traditional Wavelength division multiplexing module overall dimensions are big and optical signal insertion loss is big, this utility model is carried A kind of miniature band tail optical fiber Wavelength division multiplexing module, compact conformation, volume has been supplied to reduce, the insertion loss of optical signal is little.

The technical solution adopted in the utility model is：

A kind of miniature band tail optical fiber Wavelength division multiplexing module, including incident optical collimator, eight the output optical fiber collimators, One optical substrate group, eight optical filters, first corner cube prism and second corner cube prisms, incident optical collimator and Eight the output optical fiber collimators are arranged on the front side of optical substrate group, and the first corner cube prism and the second corner cube prism are arranged on optics The rear side of substrate in batch, optical substrate group includes the first optical substrate and the second optics base being arranged on above the first optical substrate Also leave optical signal incidence channel, incident direction and the incident optical collimator pair of incidence channel in plate, the first optical substrate top Should, the first corner cube prism is vertically placed in the second corner cube prism front side, the first corner cube prism, and the second corner cube prism is laterally put Put, the first corner cube prism is corresponding with the first optical substrate and right-angled side faces of the first corner cube prism on plating be formed with light transmittance and be 50% spectro-film, the second corner cube prism is corresponding with the second optical substrate, the front end face of the first optical substrate and the second optical substrate The rear end face for fixing four optical filters, the first optical substrate and the second optical substrate respectively is respectively fixed with high-reflecting film, and each goes out Penetrate optical fiber collimator corresponding with each optical filter.

Preferably, the incident light plane of the first corner cube prism and the second corner cube prism hangs down with the input path direction of optical signal Directly.

Preferably, the first optical substrate and the second optical substrate are split type or integral type.

Compared with prior art, the beneficial effects of the utility model are：This utility model provides a kind of miniature band tail optical fiber Wavelength division multiplexing module, due to the combination using 2 corner cube prisms, realizes double-deck light path design so that product overall structure is more For compact；Furthermore with the combination of 2 optical substrates and 8 optical filters, realize into light with go out optical port in the same of module Side, and light path is parallel, is conducive to module use in a device；And relatively conventional OWDM module, light path Simplify, reduce insertion loss value.

Description of the drawings

Fig. 1 is the schematic diagram of traditional Wavelength division multiplexing module；

A kind of miniature schematic diagram with tail optical fiber Wavelength division multiplexing module that Fig. 2 is provided for this utility model.

Specific embodiment

The preferred implementation that this utility model is provided is illustrated with reference to the accompanying drawings.

Fig. 2, for a kind of miniature preferred implementation with tail optical fiber Wavelength division multiplexing module that this utility model is provided.Such as Fig. 2 Shown, the miniature band tail optical fiber Wavelength division multiplexing module includes 10, eight the output optical fiber collimators 20, of an incident optical collimator The first corner cube prism 50 of the optical filter 40, of individual optical substrate group 30, eight and second corner cube prism 60, incident optical is accurate Directly, 10 and eight the output optical fiber collimators 20 be arranged on the front side of optical substrate group 30, the first corner cube prism 50 and the second right angle Prism 60 is arranged on the rear side of optical substrate group 30, and the first corner cube prism 50 is in the corner cube prism 60 of optical substrate group 30 and second Between, one group of optical signal 100 from after the outgoing of incident optical collimator 10, through the first corner cube prism 50 and the second corner cube prism 60 It is reverse to the light path of optical signal 100, through optical substrate group 30, received by each the output optical fiber collimator 20.

Optical substrate group 30 includes the first optical substrate 31 and is arranged on the second optics base of the top of the first optical substrate 31 Also leave the incidence channel 311 of optical signal, incident direction and the incidence of incidence channel 311 in plate 32, the top of the first optical substrate 31 The correspondence of optical fiber collimator 10, the first corner cube prism 50 is vertically placed in the front side of the second corner cube prism 60, the first corner cube prism 50, Second corner cube prism 60 is laterally disposed, and the first corner cube prism 50 is corresponding with the first optical substrate 31 and the first corner cube prism 50 one Plating in individual right-angled side faces 51 is formed with the spectro-film 52 that light transmittance is 50%, and the second corner cube prism 60 is corresponding with the second optical substrate 32, The front end face of the first optical substrate 31 and the second optical substrate 32 fixes respectively four optical filters 40, the first optical substrate 31 and The rear end face of two optical substrates 32 is respectively fixed with high-reflecting film 70, each the output optical fiber collimator 20 and each optical filter 40 pairs Should.

Here, the first corner cube prism 50 is vertical places, and the second corner cube prism 60 is laterally disposed to be referred to：First corner cube prism 50 triangle side and horizontal plane, the triangle side and plane-parallel of the second corner cube prism 60, the first right-angled edge Mirror 50 is parallel to each other with the incident light plane of the second corner cube prism 60.The incident illumination of the first corner cube prism 50 and the second corner cube prism 60 Face is vertical with the input path direction of optical signal, and the light transmittance that a right-angled side faces 51 of the first corner cube prism 50 are coated with is 50% spectro-film 52, act as that the optical signal for being irradiated to the right-angled side faces 51 with 45 degree of angles is divided into 50% reflected signal light Transmission signal light with 50%.The above-mentioned right-angled side faces 51 are in a right-angled side faces of top in first corner cube prism 50.

First optical substrate 31 and the second optical substrate 32 can be split type or integral type；Each optical filter 40 is difference , when optical signal is irradiated on optical filter 40, a signal light transmission can only be allowed.

The miniature course of work with tail optical fiber Wavelength division multiplexing module：One group of optical signal 100 is from an incident single fiber collimator After 10 outgoing, the incidence channel 311 on the first optical substrate 31 vertically into the first corner cube prism 50, and is radiated at straight On angle side 51, because right-angled side faces 51 have been coated with the spectro-film 52 of light transmittance 50%, it is achieved that dividing equally for optical signal, divides Optical signal is divided into optical signal transmissive and reflected light signal by light film 52；The right-angled side faces 51 that optical signal transmissive will penetrate continue along original side To outgoing and vertically in the second corner cube prism 60, in the second corner cube prism 60 after 2 90 degree of light paths are turned to, reality After having showed the upset of light path 180 degree, in the second optical substrate 32, by 4 different optical filterings in the second optical substrate 32 High-reflecting film 70 on the rear end face of the optical substrate 32 of piece 40 and second realizes multiple reflections, and optical signal transmissive is irradiated to every time optical filtering On piece 40, the outgoing of a flashlight can be realized；What each optical filter 40 from the second optical substrate 32 was transmitted Optical signal is received by corresponding outgoing single fiber collimator 20；The reflection of the reflection of right-angled side faces 51 of the first corner cube prisms of Jing 50 Optical signal, in another right-angled side faces secondary reflection again of the first corner cube prism 50, and can vertically penetrate the first corner cube prism 50 and enters Enter the first optical substrate 31, equally, this part reflected light signal is by 4 in the first optical substrate 31 different optical filters 40 and the High-reflecting film 70 on the rear end face of one optical substrate 31 realizes multiple reflections, and reflected light signal is irradiated to every time optical filter 40 On, the outgoing of a flashlight can be realized, thus, being capable of achieving the wavelength-division function of 8 signals；Conversely, can be achieved to multiplexing Function.When need to 4 signals be carried out with wavelength-division or multiplexing, reduce by 4 optical filters 40, the first optical substrate 31, the first right-angled edges Mirror 50 and corresponding 4 outgoing single fibers collimator 20, so that it may realize the band tail optical fiber wavelength-division multiplex function of 4 signals.

The above-mentioned miniature Wavelength division multiplexing module with tail optical fiber, due to the combination using 2 corner cube prisms, realizes double-deck light path Design, so that product overall structure is more compact；Furthermore with the combination of 2 optical substrates and 8 optical filters, realize Enter light and go out optical port in the same side of module, and light path is parallel, be conducive to module use in a device.From parameter See in performance, for relatively conventional OWDM module, because light path is more simplified, the miniature wavelength-division multiplex with tail optical fiber The insertion loss value of module will be more low.Therefore, the miniature internal structure with tail optical fiber Wavelength division multiplexing module is more compact, finished product Volume is more compact, insertion loss value is also less.

In sum, the technical solution of the utility model can realize above-mentioned utility model purpose, and this with sufficiently effective The structure and principle of work and power of utility model all sufficiently verified in embodiment, can reach expected effect and mesh , on the premise of without departing substantially from principle of the present utility model and essence, numerous variations can be made to the embodiment of utility model Or modification.Therefore, this utility model include all be previously mentioned in patent claim in the range of all replacement contents, it is any The equivalence changes made in this utility model claim, all belong within the scope of the claims of this case application.

Claims (3)

1. a kind of miniature band tail optical fiber Wavelength division multiplexing module, including incident optical collimator, eight the output optical fiber collimators, one Individual optical substrate group, eight optical filters, first corner cube prism and second corner cube prisms, it is characterised in that incident illumination Fine collimator and eight the output optical fiber collimators are arranged on the front side of optical substrate group, the first corner cube prism and the second corner cube prism It is arranged on the rear side of optical substrate group, optical substrate group includes the first optical substrate and be arranged on above the first optical substrate the Also leave optical signal incidence channel, the incident direction and incident optical of incidence channel in two optical substrates, the first optical substrate top Collimator correspondence, the first corner cube prism is vertically placed in the second corner cube prism front side, the first corner cube prism, the second corner cube prism It is laterally disposed, the first corner cube prism is corresponding with the first optical substrate and right-angled side faces of the first corner cube prism on plate and be formed with Light rate is 50% spectro-film, and the second corner cube prism is corresponding with the second optical substrate, the first optical substrate and the second optical substrate Front end face fixes respectively the rear end face of four optical filters, the first optical substrate and the second optical substrate and is respectively fixed with high-reflecting film, Each the output optical fiber collimator is corresponding with each optical filter.

2. according to claim 1 miniature with tail optical fiber Wavelength division multiplexing module, it is characterised in that：First corner cube prism and second The incident light plane of corner cube prism is vertical with the input path direction of optical signal.

3. according to claim 1 miniature with tail optical fiber Wavelength division multiplexing module, it is characterised in that：First optical substrate and second Optical substrate is split type or integral type.