CN203422497U - Compact-type wavelength division multiplexing optical structure and light emitting module - Google Patents
Compact-type wavelength division multiplexing optical structure and light emitting module Download PDFInfo
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- CN203422497U CN203422497U CN201320577247.0U CN201320577247U CN203422497U CN 203422497 U CN203422497 U CN 203422497U CN 201320577247 U CN201320577247 U CN 201320577247U CN 203422497 U CN203422497 U CN 203422497U
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Abstract
The utility model discloses a compact-type wavelength division multiplexing optical structure, comprising three tiers of light combining units and an isolator arranged behind the third tier light combining unit. The first tier light combining unit combines a first incident light ray and a second incident light ray into one light beam and outputs the light beam. The second tier light combining unit combines a third incident light ray and the first two incident light rays into one light beam and outputs the light beam. The third tier light combining unit combines a fourth incident light ray and the first three incident light rays into one light beam and outputs the light beam. The light beam combined and outputted by the third tier light combining unit is finally outputted by the isolator. The utility model also discloses a light emitting module employing the wavelength division multiplexing optical structure and comprising a wavelength division multiplexing laser set, a collimating lens set, a wavelength division multiplexer, and an optical fiber collimator, which are sequentially arranged. With the employment of a highly integrated one-piece structure, the optical structure and the light emitting module are simple and compact in structure, simple and rapid in assembling and regulating process, high in coupling efficiency, good in temperature performance, convenient for assembling, and beneficial for long-distance transmission of light signals.
Description
Technical field
The utility model relates to technical field of optical fiber communication, relates in particular to a kind of compact WDM optical structure and light emission module for light transmitting terminal.
Background technology
Growing along with communication field, traditional transmission technology has been difficult to meet the requirement of transmission capacity and speed, in typical application as fields such as data center, network connection, search engine, high-performance calculations, for preventing the deficiency of broadband resource, common carrier and service suppliers dispose planning express network agreement of new generation, and this just needs corresponding transmitted at high speed module to meet the data transmission requirement of high density two-forty.In information transmission system at a high speed, need to substitute traditional optical module with highdensity optical module, adopt multichannel light transmit-receive technology, more transponder and receiver can be concentrated in less space and go, especially in the optical fiber solution of 40Gbps or 100Gbps, adopt the transmission technology of 4 passages, with every path 10 Gbps or higher speed, carry out data transmission, its capacity can reach 4 times even higher of traditional single channel transmission.And in such transmitted at high speed module, its core component is WDM optical structure in module, for the light signal of Jiang Si road different wave length, is coupled to same optical fiber and transmits.
Summary of the invention
The purpose of this utility model is to propose a kind of compact WDM optical structure and light emission module, simple and compact for structure, easy to assembly, is convenient to light path debugging, and coupling efficiency is high.
For achieving the above object, the technical scheme the utility model proposes is: a kind of compact WDM optical structure, comprise that three grades are closed light unit: the first order is closed light unit, He Guang unit, the second level and the third level and closed light unit, also comprise that being located at the third level closes light unit isolator below; The described first order is closed light unit the first incident light and the second incident light is combined into light beam output, and He Guang unit, the described second level is combined into light beam output by the 3rd incident light and front two bundle incident lights; The described third level is closed light unit the 4th incident light and front three beams incident light is combined into light beam output; Through the third level, close the light beam that light unit closes bundle output, finally by isolator, export.
Further, the described first order is closed light unit and is comprised a fully reflecting surface and the first filtering diaphragm; He Guang unit, the described second level comprises a fully reflecting surface and the second filtering diaphragm; The described third level is closed light unit and comprises a fully reflecting surface and the 3rd filtering diaphragm; Described the first filtering diaphragm, the second filtering diaphragm and the 3rd filtering diaphragm are arranged in order in the light path of the long incident light of first wave, all anti-reflection to the long incident light of first wave; The fully reflecting surface that the described first order is closed light unit reflexes to the first filtering diaphragm and first wave by second wave length incident light and grows into and penetrate combiner output; Synthetic light beam is incident to the second filtering diaphragm, and the fully reflecting surface of He Guang unit, the second level reflexes to the second filtering diaphragm by three-wavelength incident light, with the long incident light of first wave and the output of second wave length incident combiner; Synthetic light beam continues to be incident to the 3rd filtering diaphragm, and the fully reflecting surface that the third level is closed light unit reflexes to the 3rd filtering diaphragm by the 4th wavelength incident light, with first three wavelength incident combiner output.
Further, also comprise an extinction sheet; The described first order is closed light unit and is comprised a fully reflecting surface and first's transmission diaphragm; He Guang unit, the described second level comprises second portion transmission diaphragm; The described third level is closed light unit and comprises third part transmission diaphragm; Described fully reflecting surface, first's transmission diaphragm, second portion transmission diaphragm and third part transmission diaphragm are arranged in order, the light path Shang， tetra-road incident lights of being located at the long incident light of first wave, second wave length incident light, three-wavelength incident light and the 4th wavelength incident light with oblique 45° angle are respectively incident on each self-corresponding fully reflecting surface or part transmission diaphragm with 45 °; The long incident light of first wave is incident to part light and the second wave length incident light of the transmission diaphragm transmission of transmission diaphragm ，Jing first of first and exports through the part combiner of first's transmission diaphragm reflection after fully reflecting surface reflection; This synthetic light incides second portion transmission film, through part light and the three-wavelength incident light of its transmission, through the part combiner of second portion transmission diaphragm reflection, exports; This synthetic light incides third part transmission diaphragm, part light and the 4th wavelength incident light through its transmission are exported through the part combiner of third part transmission diaphragm reflection, through part light and the 4th wavelength incident light of its reflection, through the part combiner of third part transmission diaphragm transmission, export; Export through described isolator on the synthetic light Zhong， of two bundles mono-tunnel by the output of described third part transmission diaphragm, and extinction sheet absorbs described in a route.
Further, described fully reflecting surface, first's transmission diaphragm, second portion transmission diaphragm and third part transmission diaphragm are located in a combined prism.
Further, also comprise a substrate, the described first order is closed light unit, He Guang unit, the second level, the third level closes light unit and isolator is all placed on described substrate.
Further, described substrate is heat-radiating substrate.
Another technical scheme that the utility model improves is: the light emission module that adopts above-mentioned WDM optical structure, comprise the wave division multiplex laser group, collimation lens set, wavelength division multiplexer and the optical fiber collimator that are arranged in order, described wavelength division multiplexer adopts compact WDM optical structure as above.
The beneficial effects of the utility model are: adopt highly integrated integral structure, and simple and compact for structure, easy to assembly, assembly and adjustment process simple and fast, coupling efficiency is high, and has good temperature performance, is conducive to the long Distance Transmission of light signal.
Accompanying drawing explanation
Fig. 1 is the utility model wavelength-division multiplex system schematic diagram;
Fig. 2 is the utility model wavelength-division multiplex embodiment mono-structural representation;
Fig. 3 is the utility model wavelength-division multiplex embodiment bis-structural representations;
Fig. 4 is the utility model light emission module structural representation.
Accompanying drawing indicates: 1, wavelength division multiplexer; 11, substrate; 121, the first catoptron; 122, the second catoptron; 123, the 3rd catoptron; 124, the first filtering diaphragm; 125, the second filtering diaphragm; 126, the 3rd filtering diaphragm; 13, isolator; 14, combined prism; 141, fully reflecting surface; 142, first transmission diaphragm; 143, second portion transmission diaphragm; 144, third part transmission diaphragm; 2, laser array; 3, collimation lens set; 4, optical fiber collimator.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
The purpose of this utility model is to provide a kind of compact WDM optical structure, for 4 passage light emission modules, the incident optical signal of Jiang Si road different wave length closes to restraint and be coupled in same optical fiber and transmits, have simple and compact for structure, easy to assembly, be convenient to light path debugging, coupling efficiency advantages of higher.As shown in Figure 1, this WDM optical structure, comprises that three grades are closed light unit: the first order is closed light unit, He Guang unit, the second level and the third level and closed light unit, also comprises that being located at the third level closes light unit isolator below; First, the first order is closed light unit the first incident light and the second incident light is combined into light beam output; Then, He Guang unit in the second level is combined into light beam output by the 3rd incident light and front two bundle incident lights; Afterwards, the third level is closed light unit the 4th incident light and front three beams incident light is combined into light beam output; Through the third level, close the light beam that light unit closes bundle output, finally by isolator, export.Concrete, following embodiment describes in detail.
Embodiment mono-as shown in Figure 2, wherein, the first order is closed light unit and is comprised a fully reflecting surface (the first catoptron 121) and the first filtering diaphragm 124, He Guang unit, the second level comprises a fully reflecting surface (the second catoptron 122) and the second filtering diaphragm 125, and the third level is closed light unit and comprises a fully reflecting surface (the 3rd catoptron 123) and the 3rd filtering diaphragm 126; The first filtering diaphragm 124, the second filtering diaphragm 125 and the 3rd filtering diaphragm 126 are arranged in order in the light path of the long incident light of first wave, all anti-reflection to the long incident light of first wave; The first catoptron 121 reflexes to the first filtering diaphragm 124 by second wave length incident light and grows into and penetrate combiner output with first wave; Synthetic light beam is incident to the second filtering diaphragm 125, the second catoptrons 122 three-wavelength incident light is reflexed to the second filtering diaphragm 125, with the long incident light of first wave and the output of second wave length incident combiner; Synthetic light beam continues to be incident to the 3rd filtering diaphragm 126, the three catoptrons 123 the 4th wavelength incident light is reflexed to the 3rd filtering diaphragm 126, with first three wavelength incident combiner output; Synthetic light beam is finally by isolator 13 outputs.Four tunnel incident light wavelengths are different, are respectively the long incident light λ 1 of first wave, second wave length incident light λ 2, the three-wavelength incident light λ 3, the four wavelength incident light λ 5.Wherein the first filtering diaphragm transmission λ 1 reflects λ 2; The second filtering diaphragm transmission λ 1 and λ 2, reflection λ 3; The 3rd filtering diaphragm transmission λ 1, λ 2 and λ 3, reflection λ 4.In this structure, the first catoptron 121, the second catoptron 122 and the 3rd catoptron 123 can all be debugged separately each road light, so Insertion Loss that can Jiang Mei road is all transferred to minimum.And in light emission module, in laser instrument, collimation lens solidification process due to the inevitable shrinkage character of curing glue, bring very large loss may to the coupling of incident light, the completely reflecting mirror of this structure and filtering diaphragm can play good secondary correction effect, improved the controllability to light beam, and can keep the consistance of each passage, thereby guarantee good coupling effect.
In this embodiment, also above-mentioned each optical module is fixed on and on a substrate 11, forms integrated Mux structure, on substrate 11, in advance above-mentioned each optical module is assembled, when being applied to light emission module, this Mux structural entity can be put into module housing debugs, make more simple and fast of assembly and adjustment process, and can utilize well length and the width spaces of housing, and flexible and changeable.Preferably, aforesaid substrate 11 can adopt the heat-radiating substrate that thermal diffusivity is good, to reduce temperature correlation loss, thereby makes module have better temperature performance.
Embodiment bis-as shown in Figure 3, different from above-described embodiment, what this embodiment adopted is highly integrated integral structure, utilizes a combined prism 14 to realize the bundle that closes of four road light signals.In this embodiment, be also provided with extinction sheet, wherein, the first order is closed light unit and is comprised a fully reflecting surface 141He first transmission diaphragm 142, and He Guang unit, the second level comprises second portion transmission diaphragm 143, and the third level is closed light unit and comprises third part transmission diaphragm 144; Fully reflecting surface 141, first transmission diaphragm 142, second portion transmission diaphragm 143 and third part transmission diaphragm 144 are arranged in order, the light path Shang， tetra-road incident lights of being located at the long incident light λ 1 of first wave, second wave length incident light λ 2, three-wavelength incident light λ 3 and the 4th wavelength incident light λ 4 with oblique 45° angle are respectively incident on each self-corresponding fully reflecting surface 141 or part transmission diaphragm with 45 °.Part light and second wave length incident light λ 2 that the long incident light λ 1 of first wave is incident to transmission diaphragm 142 transmissions of transmission diaphragm 142，Jing first of first after fully reflecting surface 141 reflections export through the part combiner of first's transmission diaphragm 142 reflections; This synthetic light incides second portion transmission film 143, through part light and the three-wavelength incident light λ 3 of its transmission, through the part combiner of second portion transmission diaphragm 143 reflections, exports; This synthetic light incides third part transmission diaphragm 144, part light and the 4th wavelength incident light λ 4 through its transmission export through the part combiner of third part transmission diaphragm 144 reflections, through part light and the 4th wavelength incident light λ 4 of its reflection, through the part combiner of third part transmission diaphragm 144 transmissions, export; Export through described isolator 13 on the synthetic light Zhong， of two bundles mono-tunnel by described third part transmission diaphragm 144 outputs, and a route extinction sheet absorbs.Above-mentioned fully reflecting surface 141, first transmission diaphragm 142, second portion transmission diaphragm 143 and third part transmission diaphragm 144 are located in a combined prism 14, realize height integrated structure.On 144 two output light directions of this combined prism 14 and third part transmission diaphragm, corresponding end face is respectively end face S1 and end face S2, as shown in Figure 3.Wherein, the Transflective of first's transmission diaphragm 142 is than T1:R1=50%:50%, and the Transflective of second portion transmission diaphragm 143 ratio is T2:R2, T2+R2=1, and the Transflective of third part transmission diaphragm 144 is than being T3:R3, T3+R3=1.For each passage is kept consistency, when isolator 13 is located in the light path of end face S2 output, in the light path of end face S1 output, extinction sheet is set, adopt the end face S2 output light time, the plated film of various piece transmission diaphragm is required to 0.5 * T2 * R3=R2 * R3=T3; Or while isolator 13 being located in the light path of end face S1 output, in the light path of end face S2 output, extinction sheet is set, adopts the end face S1 output light time, the plated film of various piece transmission diaphragm is required to 0.5 * T2 * T3=R2 * T3=R3.When adopting the end face S1 output light time, preferred, after end face S1, increase by a catoptron, output light perpendicular to end face S1 is reflexed to parallel with end face S1, the direction output identical with each incident light direction of propagation, is placed in this output light path by isolator 13, optical path adjusting when convenient for assembly.Number of devices that this light channel structure adopts and kind still less, Highgrade integration, structure is the simplest, can effectively shorten length and width spaces, and debugs convenient and swiftly, can effectively improve efficiency of assembling.
Each optical element described in this embodiment bis-is placed on a substrate 11, the Mux structure that height of formation is integrated, convenient for assembly.Equally, substrate 11 can adopt the heat-radiating substrate that thermal diffusivity is good, to reduce temperature correlation loss, thereby makes module have better temperature performance.
Another technical scheme that the utility model improves is: the light emission module that adopts above-mentioned WDM optical structure, comprise the wave division multiplex laser group 2, collimation lens set 3, wavelength division multiplexer 1 and the optical fiber collimator 4 that are arranged in order, this wavelength division multiplexer 1 adopts compact WDM optical structure as above.
Concrete enforcement as shown in Figure 4, the laser constitution laser array 2 of four different wave lengths, each road laser instrument output light incides in wavelength division multiplexer 1 respectively after collimation lens set 3 collimations, after wavelength division multiplexer 1 closes bundle, by optical fiber collimator 4 collimations, is outputed in Transmission Fibers.This wavelength division multiplexer 1 adopts the concrete structure of above-mentioned each embodiment of compact WDM optical structure, thereby can implementation structure compact, debugging is convenient, the light emission module of assembling simple and fast.And owing to being provided with isolator in this wavelength division multiplexer, having forward light can pass through, backlight is blocked a little, thereby avoids reverse return loss light to incide laser instrument, thereby affects the stability of laser signal.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but those skilled in the art should be understood that; within not departing from the spirit and scope of the present utility model that appended claims limits; the various variations of in the form and details the utility model being made, are protection domain of the present utility model.
Claims (7)
1. a compact WDM optical structure, is characterized in that: comprise that three grades are closed light unit: the first order is closed light unit, He Guang unit, the second level and the third level and closed light unit, also comprises that being located at the third level closes light unit isolator below; The described first order is closed light unit the first incident light and the second incident light is combined into light beam output, and He Guang unit, the described second level is combined into light beam output by the 3rd incident light and front two bundle incident lights; The described third level is closed light unit the 4th incident light and front three beams incident light is combined into light beam output; Through the third level, close the light beam that light unit closes bundle output, finally by isolator, export.
2. compact WDM optical structure as claimed in claim 1, is characterized in that: the described first order is closed light unit and comprised a fully reflecting surface and the first filtering diaphragm; He Guang unit, the described second level comprises a fully reflecting surface and the second filtering diaphragm; The described third level is closed light unit and comprises a fully reflecting surface and the 3rd filtering diaphragm; Described the first filtering diaphragm, the second filtering diaphragm and the 3rd filtering diaphragm are arranged in order in the light path of the long incident light of first wave, all anti-reflection to the long incident light of first wave; The fully reflecting surface that the described first order is closed light unit reflexes to the first filtering diaphragm and first wave by second wave length incident light and grows into and penetrate combiner output; Synthetic light beam is incident to the second filtering diaphragm, and the fully reflecting surface of He Guang unit, the second level reflexes to the second filtering diaphragm by three-wavelength incident light, with the long incident light of first wave and the output of second wave length incident combiner; Synthetic light beam continues to be incident to the 3rd filtering diaphragm, and the fully reflecting surface that the third level is closed light unit reflexes to the 3rd filtering diaphragm by the 4th wavelength incident light, with first three wavelength incident combiner output.
3. compact WDM optical structure as claimed in claim 1, is characterized in that: also comprise an extinction sheet; The described first order is closed light unit and is comprised a fully reflecting surface and first's transmission diaphragm; He Guang unit, the described second level comprises second portion transmission diaphragm; The described third level is closed light unit and comprises third part transmission diaphragm; Described fully reflecting surface, first's transmission diaphragm, second portion transmission diaphragm and third part transmission diaphragm are arranged in order, the light path Shang， tetra-road incident lights of being located at the long incident light of first wave, second wave length incident light, three-wavelength incident light and the 4th wavelength incident light with oblique 45° angle are respectively incident on each self-corresponding fully reflecting surface or part transmission diaphragm with 45 °; The long incident light of first wave is incident to part light and the second wave length incident light of the transmission diaphragm transmission of transmission diaphragm ，Jing first of first and exports through the part combiner of first's transmission diaphragm reflection after fully reflecting surface reflection; This synthetic light incides second portion transmission film, through part light and the three-wavelength incident light of its transmission, through the part combiner of second portion transmission diaphragm reflection, exports; This synthetic light incides third part transmission diaphragm, part light and the 4th wavelength incident light through its transmission are exported through the part combiner of third part transmission diaphragm reflection, through part light and the 4th wavelength incident light of its reflection, through the part combiner of third part transmission diaphragm transmission, export; Export through described isolator on the synthetic light Zhong， of two bundles mono-tunnel by the output of described third part transmission diaphragm, and extinction sheet absorbs described in a route.
4. compact WDM optical structure as claimed in claim 3, is characterized in that: described fully reflecting surface, first's transmission diaphragm, second portion transmission diaphragm and third part transmission diaphragm are located in a combined prism.
5. compact WDM optical structure as described in claim 1-4 any one, is characterized in that: also comprise a substrate, the described first order is closed light unit, He Guang unit, the second level, the third level closes light unit and isolator is all placed on described substrate.
6. compact WDM optical structure as claimed in claim 5, is characterized in that: described substrate is heat-radiating substrate.
7. a light emission module, comprise the wave division multiplex laser group, collimation lens set, wavelength division multiplexer and the optical fiber collimator that are arranged in order, it is characterized in that: described wavelength division multiplexer is the compact WDM optical structure as described in claim 1-6 any one.
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| CN201320577247.0U CN203422497U (en) | 2013-09-18 | 2013-09-18 | Compact-type wavelength division multiplexing optical structure and light emitting module |
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| CN201320577247.0U CN203422497U (en) | 2013-09-18 | 2013-09-18 | Compact-type wavelength division multiplexing optical structure and light emitting module |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104597569A (en) * | 2015-01-14 | 2015-05-06 | 青岛海信宽带多媒体技术有限公司 | Wavelength division multiplexer/de-multiplexer and optical transmitter module |
| CN107078807A (en) * | 2016-12-13 | 2017-08-18 | 索尔思光电（成都）有限公司 | Multichannel optical transmitting set and production and preparation method thereof |
| CN109445033A (en) * | 2018-12-27 | 2019-03-08 | 珠海市本佳科技有限公司 | Wavelength-division multiplex mould group and light emitting devices |
| CN110927880A (en) * | 2019-11-28 | 2020-03-27 | 中国科学院微电子研究所 | High-stability polarization maintaining beam combining device and method |
| CN110927983A (en) * | 2019-11-28 | 2020-03-27 | 中国科学院微电子研究所 | High-stability low-crosstalk beam splitting device |
| CN110941050A (en) * | 2019-10-30 | 2020-03-31 | 宁波环球广电科技有限公司 | Multichannel high-density wavelength division multiplexing high-speed optical device |
| CN111025484A (en) * | 2019-10-30 | 2020-04-17 | 宁波环球广电科技有限公司 | Multichannel miniature wavelength division multiplexing high-speed optical device |
-
2013
- 2013-09-18 CN CN201320577247.0U patent/CN203422497U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104597569A (en) * | 2015-01-14 | 2015-05-06 | 青岛海信宽带多媒体技术有限公司 | Wavelength division multiplexer/de-multiplexer and optical transmitter module |
| CN107078807A (en) * | 2016-12-13 | 2017-08-18 | 索尔思光电（成都）有限公司 | Multichannel optical transmitting set and production and preparation method thereof |
| CN109445033A (en) * | 2018-12-27 | 2019-03-08 | 珠海市本佳科技有限公司 | Wavelength-division multiplex mould group and light emitting devices |
| CN110941050A (en) * | 2019-10-30 | 2020-03-31 | 宁波环球广电科技有限公司 | Multichannel high-density wavelength division multiplexing high-speed optical device |
| CN111025484A (en) * | 2019-10-30 | 2020-04-17 | 宁波环球广电科技有限公司 | Multichannel miniature wavelength division multiplexing high-speed optical device |
| CN110927880A (en) * | 2019-11-28 | 2020-03-27 | 中国科学院微电子研究所 | High-stability polarization maintaining beam combining device and method |
| CN110927983A (en) * | 2019-11-28 | 2020-03-27 | 中国科学院微电子研究所 | High-stability low-crosstalk beam splitting device |
| CN110927880B (en) * | 2019-11-28 | 2021-06-18 | 中国科学院微电子研究所 | High-stability polarization maintaining beam combining device and method |
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Granted publication date: 20140205 |