CN207799139U - A kind of miniature multifunction integrated optical circuit device of light path bit shift compensation - Google Patents
A kind of miniature multifunction integrated optical circuit device of light path bit shift compensation Download PDFInfo
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- CN207799139U CN207799139U CN201820051373.5U CN201820051373U CN207799139U CN 207799139 U CN207799139 U CN 207799139U CN 201820051373 U CN201820051373 U CN 201820051373U CN 207799139 U CN207799139 U CN 207799139U
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- filter
- light path
- optical filter
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- light beam
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Abstract
The utility model provides a kind of miniature multifunction integrated optical circuit device of light path bit shift compensation, including four optical filters arranged side by side, the front end of first optical filter is equipped with the antireflective coating for entering optical filter for light beam, the front end of the other three optical filter is equipped with the high reflection layer for being reflected optical filter inner light beam, the rear end of each optical filter is equipped with the filter membranous layer for being filtered to light beam, is additionally provided with for the compensating plate to carrying out light path offset correction across the light beam of filter membranous layer close to the side of filter membranous layer.Compared with prior art, light beam can be injected directly in optical filter, reduce the volume of entire device by the miniature multifunction integrated optical circuit device of the light path bit shift compensation, the loss of each path channels is effectively reduced and balanced, and management and control can be carried out to light path offset distance by compensating plate.
Description
Technical field
The utility model is related to optical-fibre communications transmission field, the miniature integrated optical circuit device of especially a kind of light path bit shift compensation
Part.
Background technology
The development day crescent benefit of network technology, the current integration of three networks have become big trend, and 3G has spread out application,
Pilot is run LTE, and since light entering and copper back has driven the fast development and extensive use of PON technologies, these are all that tradition takes
The function that card platform does not have, leaves the blank of supervision and signalling analysis, it is necessary to develop new equipment in due course, help operator
Optimize network, and makes internet society as society in well-ordering operating status.Adapt to the situation development, LAN WDM
（Wavelength-division multiplex LAN）Technology has also obtained quick development.LAN WDM technologies are transmitted using the light of 4 different wave lengths,
Each wavelength transmission 25Gb/s data, transmission range is 10km and 40km respectively.It establishes intensive on the basis of LAN WDM technologies
Integrated optical device, for structure as shown in Figure 1,1 is pedestal, 2a/2b/2c/2d is respectively the filter plate in different channels, and is filtered
The filter membranous layer of piece is the high reflection film layer being coated on pedestal 1 towards pedestal 1,3, and 4 be the anti-reflection film being coated on pedestal 1
Layer.Signal light is incident at an angle from the antireflective coating 4 of pedestal 1 to enter pedestal 1, in the viscous of pedestal 1 and optical filter 2a
Junction realizes that the separation of optical signal, L0 signals penetrate filter plate 2a outgoing, remaining signal reflex and the high reflection film layer in pedestal 1
Secondary reflection again on 3, and then realize that the separation of optical signal, L1 signals penetrate filter plate 2b in the bonding plane of pedestal 1 and optical filter 2b
Outgoing, remaining signal reflex.So successively, it realizes the separation of L2, L3 two paths of signals, so far completes the wavelength-division function of optical signal.
Otherwise, it can be achieved that the multiplexing function of optical signal.But optical signal is in the transmission process for being transferred into pedestal 1, just according to height
The principle of this light beam is transmitted, and optical signal is increasingly to dissipate, the hot spot cross-sectional area of optical signal be it is increasing, such as
Shown in lower Fig. 2, ω 0 is the waist radius of Gaussian beam, and θ is beam divergence full-shape, and R (z) is at beam waist position distance z
Wavefront radii.With the increase of optical transmission distance, Gaussian beam radius ω is bigger.That is, each channel of current production
IL will increase because of the increase of optical transmission distance.By taking the wavelength division component of 4CH as an example, the IL in the channels L0 will be minimum, L3
The IL in channel will be maximum.
Utility model content
Problem big for light path devices volume in the prior art, that optical path loss is serious and light path offset distance is fixed,
The utility model provides a kind of miniature multifunction integrated optical circuit device of light path bit shift compensation, reduces light path devices volume, while effectively
The loss of each path channels is reduced and balanced, and management and control is carried out to light path offset distance.
The technical solution adopted in the utility model is：
A kind of miniature multifunction integrated optical circuit device of light path bit shift compensation, including four optical filters arranged side by side, first filter
The front end of mating plate is equipped with the antireflective coating for entering optical filter for light beam, and the front end of the other three optical filter is equipped with for filtering
The high reflection layer that piece inner light beam is reflected, the rear end of each optical filter are equipped with the filter membranous layer for being filtered to light beam,
It is additionally provided with for the compensating plate to carrying out light path offset correction across the light beam of filter membranous layer close to the side of filter membranous layer.
Preferably, the compensating plate is fixed on filter membranous layer.
Preferably, four optical filters are fixed as one using glued mode.
Compared with prior art, the beneficial effects of the utility model are：The utility model provides a kind of light path displacement benefit
Light beam can be injected directly in optical filter, reduce the volume of entire device, effectively reduce peace by the miniature multifunction integrated optical circuit device repaid
The loss for each path channels that weigh, and management and control can be carried out to light path offset distance by compensating plate.
Description of the drawings
Fig. 1 is the schematic diagram for being densely integrated optical device in the prior art；
Fig. 2 is the hot spot cross-sectional area schematic diagram of optical signal in the prior art；
Fig. 3 is a kind of schematic diagram of the miniature multifunction integrated optical circuit device of light path bit shift compensation provided by the utility model；
Fig. 4 is to pass through filter membranous layer in a kind of miniature multifunction integrated optical circuit device of light path bit shift compensation provided by the utility model
Light beam enter the schematic diagram of compensating plate.
Specific implementation mode
Preferred embodiment provided by the utility model is illustrated with reference to the accompanying drawings.
Fig. 3 is a kind of preferred implementation side of the miniature multifunction integrated optical circuit device of light path bit shift compensation provided by the utility model
Formula.As shown in figure 3, the miniature multifunction integrated optical circuit device of the light path bit shift compensation include four optical filter 1a, 1b arranged side by side,
1c, 1d, the front end of first optical filter 1a are equipped with the antireflective coating 4 for entering optical filter for light beam, the other three optical filter 1b,
The front end of 1c, 1d are equipped with the high reflection layer 3 for being reflected optical filter inner light beam, and the rear end of each optical filter, which is equipped with, to be used for
To the filter membranous layer 2 that light beam is filtered, it is additionally provided with for the light beam across filter membranous layer 2 close to the side of filter membranous layer 2
The compensating plate 5 of light path offset correction is carried out, compensating plate 5 is fixed on filter membranous layer 2, can light beam directly be injected optical filter in this way
It is interior, reduce the volume of entire device, effectively reduces and balance the loss of each path channels, and can be to light path by compensating plate
Offset distance carries out management and control.Described four optical filters 1a, 1b, 1c, 1d are fixed as one using glued mode, antireflective coating 4 with
And high reflection layer 3 is arranged using the mode that is coated in the front end of corresponding optical filter.
The thickness of the compensating plate is determined by compensation shift length.As shown in figure 4, the thickness H of the compensating plate depends on
Depending on compensating shift length d, formula is：, wherein θ is the incidence angle that light enters to compensating plate
Degree；N is the refractive index of compensating plate, and а is angle of light；As d=0, then H=0, then need not assemble compensating plate 5.
Entirely the light path wavelength-division multiplex process of miniature multifunction integrated optical circuit device is：Antireflective coating 4 of the signal light from optical filter 1a
On it is incident at an angle enter optical filter 1a, then filtering transmission goes out signal light L0 on the filter coating on the right side of optical filter 1a,
Remaining signal realizes reflection in optical filter 1a, and by the cemented surface of optical filter 1a and optical filter 1b, into optical filter 1b,
The reflection of light is realized on the highly reflecting films 3 on the left of optical filter 1b again.Reflect mistake on filter coating of the signal again on the right side of optical filter 1b
Filter transmits signal light L1, and repeatedly, also from the right side of optical filter 1c and optical filter 1d, filtering is saturating successively for L2 and L3 signal lights
It shoots out, these signal lights transmitted are entered back into compensating plate 5 and transmitted, to realize the wavelength-division work(of light path
Energy；Conversely, then realizing the multiplexing function of light path.
In conclusion the technical solution of the utility model sufficiently effective can realize above-mentioned purpose of utility model, and this
The structure and the principle of work and power of utility model have all adequately been verified in embodiment, can reach expected effect and mesh
, under the premise of without departing substantially from the principles of the present invention and essence, numerous variations can be made to the embodiment of utility model
Or modification.Therefore, the utility model includes all replacement contents that all are previously mentioned in patent claim in range, any
Equivalence changes made by present utility model application the scope of the claims, all within the scope of the claims of category this case application.
Claims (3)
1. a kind of miniature multifunction integrated optical circuit device of light path bit shift compensation, which is characterized in that including four optical filters arranged side by side,
The front end of first optical filter is equipped with the antireflective coating for entering optical filter for light beam, and the front end of the other three optical filter, which is equipped with, to be used
In the high reflection layer reflected optical filter inner light beam, the rear end of each optical filter is equipped with the filter for being filtered to light beam
Light film layer is additionally provided with close to the side of filter membranous layer for the compensation to carrying out light path offset correction across the light beam of filter membranous layer
Piece.
2. the miniature multifunction integrated optical circuit device of light path bit shift compensation according to claim 1, it is characterised in that：The compensating plate
It is fixed on filter membranous layer.
3. the miniature multifunction integrated optical circuit device of light path bit shift compensation according to claim 1, it is characterised in that：Four filters
Mating plate is fixed as one using glued mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820051373.5U CN207799139U (en) | 2018-01-12 | 2018-01-12 | A kind of miniature multifunction integrated optical circuit device of light path bit shift compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820051373.5U CN207799139U (en) | 2018-01-12 | 2018-01-12 | A kind of miniature multifunction integrated optical circuit device of light path bit shift compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207799139U true CN207799139U (en) | 2018-08-31 |
Family
ID=63271482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820051373.5U Active CN207799139U (en) | 2018-01-12 | 2018-01-12 | A kind of miniature multifunction integrated optical circuit device of light path bit shift compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207799139U (en) |
-
2018
- 2018-01-12 CN CN201820051373.5U patent/CN207799139U/en active Active
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