CN201974550U - Miniaturized double-channel optical module - Google Patents
Miniaturized double-channel optical module Download PDFInfo
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- CN201974550U CN201974550U CN2011200555670U CN201120055567U CN201974550U CN 201974550 U CN201974550 U CN 201974550U CN 2011200555670 U CN2011200555670 U CN 2011200555670U CN 201120055567 U CN201120055567 U CN 201120055567U CN 201974550 U CN201974550 U CN 201974550U
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- optical
- secondary module
- circuit board
- miniaturization
- smooth joint
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Abstract
The utility model discloses a miniaturized double-channel optical module, which comprises a case, one end of the case is provided with optical ports, the other end of the case is provided with electrical ports, an electronic submodule matched with the electrical ports and an optical submodule matched with the optical ports are mounted in the case, the optical submodule comprises an optical transmission submodule and an optical receiving submodule, and the electronic submodule comprises a first circuit board and a second circuit board, which are connected through a flexible board and relatively bent in the case. Since the two circuit boards are connected through the flexible board to form a rigid-flexible combined board and are relatively bent in the case, the internal space of the case is sufficiently utilized, and the size of the optical module is effectively reduced.
Description
Technical field
The utility model relates to a kind of optical module, relates in particular to a kind of miniaturization two-way optical module that is applied to radar system.
Background technology
Existing optical module generally includes that one one end is provided with optical interface and the other end is provided with the housing of electrical interface, be equipped with in the housing optical secondary module (Optical Subassembly, OSA) and the electronics secondary module (Electrical Subassembly, ESA), wherein:
Optical secondary module mainly comprise light emission secondary module (Transmitter Optical Subassembly, TOSA) and the light-receiving secondary module (Receiver Optical Subassembly, ROSA).TOSA is made of laser diode LD and monitoring diode PD, and LD is by the compound coherent light that sends of the stimulated radiation of charge carrier in the PN junction under the forward bias.ROSA is made up of photo-detector (PIN) and trans-impedance amplifier (TIA).Photo-detector is the core component of ROSA, and photo-detector commonly used in digital fiber communication mainly contains intrinsic photodiode PIN and avalanche photo diode (APD).Generally TOSA, ROSA generally are made up of three parts, comprise light joint, ceramic insertion core and tube core.
The electronics secondary module comprises and transmits and receives two parts, wherein:
As shown in Figure 1, radiating portion is by signal conditioning circuit, Laser Driven and modulation circuit, setover control and warning circuit and temperature control circuit formed automatically.The major function of signal conditioning circuit is to finish the signal that comes from electrical interface is handled, and comprises functions such as code conversion, level translation and parallel/serial conversion.The major function of Laser Driven and modulation circuit is for light source provides the necessary required drive current of generation light carrier, and will be modulated on the light carrier from the electric signal that signal processing circuit unit comes.Because the threshold current and the life-span of Laser Driven and modulation circuit are subjected to Temperature Influence bigger, therefore must carry out strict control to the threshold current and the working temperature of Laser Driven and modulation circuit.The electric current that Laser Driven and modulation circuit flow through is made up of two parts, is promptly sent the modulating current of electric signal modulation and the bias current of being controlled by automatic bias control circuit.The purpose of automatic bias control circuit is to make Laser Driven and modulation circuit bias current follow the variation of its threshold current all the time, and makes it remain on the level that is lower than threshold current slightly Laser Driven and modulation circuit are operated under the normal condition.The detection of Laser Driven and modulation circuit being sent laser characteristics generally is to test or utilize the back side radiation laser of Laser Driven and modulation circuit as test reference to the sub-fraction of output laser in proportion.Utilize test result that the bias current of Laser Driven and modulation circuit is adjusted control automatically, Laser Driven and modulation circuit are operated under the normal condition of hope.The major function of warning circuit is that the optical sender duty is reported to the police unusually, and can close the total current that flows through Laser Driven and modulation circuit automatically, damages to prevent Laser Driven and modulation circuit.Automatic temperature-controlled circuit is to provide the stationary temperature environment for stabilized lasers drives with modulation circuit average optical output power and operation wavelength, makes the fluctuation of Laser Driven and modulation circuit internal temperature within 10.5 ℃, or littler.
As shown in Figure 2, receiving unit mainly contains main functional parts compositions such as prime amplifier, main amplifier, decision device, code translator and clock recovery circuitry.Wherein, the prime amplifier effect is to amplify the ultra-weak electronic signal that photodiode produces, and further amplifies and processing for main amplifier.Prime amplifier plays a part particular importance aspect the noise weakening or prevent electromagnetic interference (EMI) and suppress, and design will be compromised between bandwidth and sensitivity.The Optical Receivers of function admirable should have the ability that detects undistortedly and recover feeble signal, also promptly requires its prime amplifier to have low noise, high sensitivity and enough bandwidth.The linear amplification of electric signal is made up of main amplifier, balanced device and automatic gain control circuit.Restriction for the bandwidth of being rivals in a contest before proofreading and correct and compensating, after main amplifier, can insert a balanced device, adopt automatic gain control circuit, make receiving unit in certain incident optical power scope, Amplifier Gain is controlled on the fixing output level automatically.
Continuous development along with China's Radar Technology, required processing of radar system and data quantity transmitted are also increasing, the signal way is also more and more, though can to a certain degree alleviate the problems by the transfer rate that promotes signal, but transfer rate must promote the problem such as crosstalk of having brought, the increase of synchronous signal way has also increased the weight of radar system, this is airborne, shipborne radar institute is unacceptable, and that the advantage of light transmission is a speed is fast, anti-interference, in light weight etc., light transmission has driven its application in military market at commercial market universal, the signal transmission form of radar system is also changed to light by electricity gradually, and its circuit board of miniaturization optical module on the existing market all adopts straight plate form, its optical secondary module band ceramic insertion core, electrical interface adopts the golden finger mode usually, its size is still too big for radar system, as present commercially available optical module SFP, SFP+, XFP, SFF etc., concrete size is as follows:
SFP：57.2mm×13.7mm×12.7mm
SFP+：56.5mm×14.0mm×12.1mm
XFP：77.8mm×22.2mm×16.1mm
SFF：48.5mm×13.2mm×10.8mm
The way of modern radar system signal transmission nearly tens tunnel even road up to a hundred, if many parallel uses of the module of these sizes, its shared board area is very huge, is that radar system institute is insupportable.For satisfying the requirement of radar system two-forty multi-channel data transmission, the practicability development demand of small size optical module is extremely urgent.
The utility model content
The purpose of this utility model is to provide a kind of miniaturization two-way optical module, to reduce the size of existing optical module.
For achieving the above object, the utility model provides a kind of miniaturization two-way optical module, comprise an end to be provided with optical interface and the other end is provided with the housing of electrical interface, electronics secondary module that cooperates with described electrical interface and the optical secondary module that cooperates with described optical interface are installed in the described housing, described optical secondary module comprises light emission secondary module and light-receiving secondary module, described electronics secondary module comprises first circuit board and second circuit board, links to each other and bending relatively in described housing by flexible board between described first circuit board and the described second circuit board.
Miniaturization two-way optical module of the present utility model, described light emission secondary module comprises first shell, the front portion of described first shell is equipped with the first smooth joint, in the described first smooth joint porcelain bushing is installed, in the described porcelain bushing convex lens are installed, the rear portion of described first shell is equipped with first tube core, the front end that described first tube core is positioned at the part of described first shell is equipped with non-globe lens, the central point of described convex lens is positioned on the focus of described non-globe lens, described light-receiving secondary module comprises second shell, its front portion is equipped with the second smooth joint that is connected as a single entity with it, in described second shell photosurface is installed, the rear portion of described second shell is equipped with second tube core.
Miniaturization two-way optical module of the present utility model, described housing comprises base and the capping that is mated, the front portion of described base is provided with described optical interface, its rear portion is provided with described electrical interface, the middle part of described base is provided with riser, have first fixed orifice of two cross direction profiles on the described riser, described first circuit board vertically is installed in the described base, described light emission secondary module and described light-receiving secondary module are installed on the described first circuit board, the anterior correspondence of the front portion of the described first smooth joint and the described second smooth joint stretches into described first fixed orifice, be positioned at second fixed orifice that has two cross direction profiles on the riser of described first fixed orifice top, the flat front end that crouches the described second circuit board above described optical secondary module is established two projectioies, and two described protruding correspondences stretch into described second fixed orifice.
Miniaturization two-way optical module of the present utility model, the free end of described first circuit board is provided with the row's pin that cooperates with described electrical interface.
Miniaturization two-way optical module of the present utility model, described riser each side is provided with first draw-in groove that an opening makes progress and protrudes in described riser backward, have the center draw-in groove that cooperates with described first draw-in groove on the middle part of described base, have one second draw-in groove on the outer wall of the described first smooth joint and the described second smooth joint, also comprise an anchor formula block, described center draw-in groove is passed and stretched in the lower end of the anchor pole of described anchor formula block between the described first smooth joint and the described second smooth joint, respectively be provided with an anchor point on the anchor formula block of the described anchor pole left and right sides, two described anchor point correspondences are stuck in described first draw-in groove, and the part corresponding matching is stuck in described second draw-in groove between each described anchor point and the described anchor pole.
Miniaturization two-way optical module of the present utility model, described row's pin is 1mm spacing row pin.
Miniaturization two-way optical module of the present utility model, described base and described capping clamping.
The electronics secondary module of miniaturization two-way optical module of the present utility model adopts two block structures, two circuit boards are interconnected by flexible board, form rigid-flexible composite plate form, two circuit boards are arranged in the housing in the mode of relative bending, thereby make full use of the enclosure interior space, effectively dwindled the volume of optical module.
This structure has also shortened the pcb board length of arrangement wire simultaneously, has reduced the requirement of wiring impedance coupling, has improved the antijamming capability of module.And, miniaturization two-way optical module of the present utility model adopts no core-inset type optical secondary module, can effectively shorten the about 4mm of optical secondary module, the optically-coupled of its convex lens and non-globe lens can suitably reduce the Output optical power on the mainboard and the drive current of driver, and then reduced the power consumption of assembly, increased the application reliability of assembly.
Description of drawings
Fig. 1 is the circuit block diagram of the radiating portion of the electronics secondary module of existing optical module;
Fig. 2 is the circuit block diagram of the receiving unit of the electronics secondary module of existing optical module;
Fig. 3 looks the spatial structure diagrammatic sketch for the master of miniaturization two-way optical module of the present utility model;
Fig. 4 looks the spatial structure diagrammatic sketch for the master after the dismounting capping of miniaturization two-way optical module of the present utility model;
Fig. 5 is the spatial structure diagrammatic sketch of the base of miniaturization two-way optical module of the present utility model;
Fig. 6 A is the electronics secondary module of miniaturization two-way optical module of the present utility model and the front view of optical secondary module;
Fig. 6 B is the right view of Fig. 6 A;
Fig. 6 C is the partial sectional view of looking up of Fig. 6 A.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail:
Shown in figure 3 to Fig. 6 B, miniaturization two-way optical module of the present utility model comprises housing, this housing comprises base 103 and the capping 104 that cooperates with its clamping, the front portion of base 103 is provided with optical interface 101, its rear portion is provided with electrical interface 102, electronics secondary module that cooperates with electrical interface 102 and the optical secondary module that cooperates with optical interface 101 are installed in the base 103, optical secondary module comprises light emission secondary module 201 and light-receiving secondary module 202, the electronics secondary module comprises first circuit board 302 and second circuit board 303, links to each other and relatively vertically bending in housing by flexible board 301 between first circuit board 302 and the second circuit board 303.Light emission secondary module 201 and light-receiving secondary module 202 are installed on the first circuit board 302, and its free end is provided with row's pin 3021 that the spacing that cooperates with electrical interface 102 is 1mm, is integrated with the electronics secondary module on the second circuit board 303 as mainboard.
Wherein, the middle part of base 103 is provided with riser 1031, have first fixed orifice 1032 of two cross direction profiles on the riser 1031, first circuit board 302 vertically is installed in the base 103, light emission secondary module 201 and light-receiving secondary module 202 are installed on the first circuit board 302, the anterior correspondence of the front portion of the first smooth joint 2012 and the second smooth joint 2022 stretches into first fixed orifice 1032, be positioned at second fixed orifice 1033 that has two cross direction profiles on the riser 1031 of first fixed orifice, 1032 tops, the flat front end that crouches the second circuit board 303 above optical secondary module is established 3031, two projection 3031 correspondences of two projectioies and is stretched into second fixed orifice 1033.Riser 1031 each side is provided with first draw-in groove 1034 that an opening makes progress and protrudes in riser 1031 backward, have on the middle part of base 103 on the outer wall of center draw-in groove 1035, the first smooth joints 2012 that cooperate with first draw-in groove 1034 and the second smooth joint 2022 and have one second draw-in groove 20.Slide for preventing light emission secondary module 201 and light-receiving secondary module 202 front and back, miniaturization two-way optical module of the present utility model also comprises an anchor formula block 4, center draw-in groove 1035 is passed and stretched in the lower end of the anchor pole 401 of anchor formula block 4 between the first smooth joint 2012 and the second smooth joint 2022, respectively be provided with an anchor point 402 on the anchor formula block 4 of anchor pole 401 left and right sides, two anchor point 402 correspondences are stuck in first draw-in groove 1034, and the part corresponding matching is stuck in second draw-in groove 20 between each anchor point 402 and the anchor pole 401.
Shown in Fig. 6 C, light emission secondary module 201 comprises first shell 2011, the front portion of first shell 2011 is equipped with the first smooth joint 2012, in the first smooth joint 2012 porcelain bushing 2013 is installed, convex lens 2016 are installed in the porcelain bushing 2013, the rear portion of first shell 2011 is equipped with first tube core 2014, the front end that first tube core 2014 is positioned at the part of first shell 2011 is equipped with non-globe lens 2015, convex lens 2016 and non-globe lens 2015 optically-coupled, the central point that is convex lens 2016 is positioned on the focus of non-globe lens 2015, light-receiving secondary module 202 comprises second shell 2021, its front portion is equipped with the second smooth joint 2022 that is connected as a single entity with it, the rear portion that photosurface 2023, the second shells 2021 are installed in second shell 2021 is equipped with second tube core 2024.
The electronics secondary module of miniaturization two-way optical module of the present utility model adopts two block structures, wherein one is used for fixing light emission secondary module, light-receiving secondary module and row's pin, another piece is a mainboard, be used for signal Processing, two circuit boards are interconnected by flexible board, form rigid-flexible composite plate form, two circuit boards are arranged in the housing in mutually perpendicular mode, thereby make full use of the enclosure interior space, effectively dwindled the volume of optical module, simultaneously also shorten the pcb board length of arrangement wire, reduced the requirement of wiring impedance coupling, improved the antijamming capability of module.And, miniaturization two-way optical module of the present utility model adopts no core-inset type optical secondary module, can effectively shorten the about 4mm of optical secondary module, the optically-coupled of its convex lens and non-globe lens can suitably reduce the Output optical power on the mainboard and the drive current of driver, and then reduced the power consumption of assembly, increased the application reliability of assembly.
Above embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineering technical personnel in this area make the technical solution of the utility model all should fall in the definite protection domain of claims of the present utility model.
Claims (7)
1. miniaturization two-way optical module, comprise an end to be provided with optical interface (101) and the other end is provided with the housing of electrical interface (102), electronics secondary module that cooperates with described electrical interface (102) and the optical secondary module that cooperates with described optical interface (101) are installed in the described housing, described optical secondary module comprises light emission secondary module (201) and light-receiving secondary module (202), it is characterized in that, described electronics secondary module comprises first circuit board (302) and second circuit board (303), links to each other and bending relatively in described housing by flexible board (301) between described first circuit board (302) and the described second circuit board (303).
2. miniaturization two-way optical module according to claim 1, it is characterized in that, described light emission secondary module (201) comprises first shell (2011), the front portion of described first shell (2011) is equipped with the first smooth joint (2012), in the described first smooth joint (2012) porcelain bushing (2013) is installed, convex lens (2016) are installed in the described porcelain bushing (2013), the rear portion of described first shell (2011) is equipped with first tube core (2014), the front end that described first tube core (2014) is positioned at the part of described first shell (2011) is equipped with non-globe lens (2015), the central point of described convex lens (2016) is positioned on the focus of described non-globe lens (2015), described light-receiving secondary module (202) comprises second shell (2021), its front portion is equipped with the second smooth joint (2022) that is connected as a single entity with it, photosurface (2023) is installed in described second shell (2021), and the rear portion of described second shell (2021) is equipped with second tube core (2024).
3. miniaturization two-way optical module according to claim 2, it is characterized in that, the capping (104) that described housing comprises base (103) and is mated, the front portion of described base (103) is provided with described optical interface (101), its rear portion is provided with described electrical interface (102), the middle part of described base (103) is provided with riser (1031), have first fixed orifice (1032) of two cross direction profiles on the described riser (1031), described first circuit board (302) vertically is installed in the described base (103), described light emission secondary module (201) and described light-receiving secondary module (202) are installed on the described first circuit board (302), the anterior correspondence of the front portion of the described first smooth joint (2012) and the described second smooth joint (2022) stretches into described first fixed orifice (1032), be positioned at second fixed orifice (1033) that has two cross direction profiles on the riser (1031) of described first fixed orifice (1032) top, the flat front end that crouches the described second circuit board (303) above described optical secondary module is established two projectioies (3031), and two described projectioies (3031) correspondence stretches into described second fixed orifice (1033).
4. miniaturization two-way optical module according to claim 3 is characterized in that, the free end of described first circuit board (302) is provided with the row's pin (3021) that cooperates with described electrical interface (102).
5. miniaturization two-way optical module according to claim 4, it is characterized in that, described riser (1031) each side is provided with first draw-in groove (1034) that an opening makes progress and protrudes in described riser (1031) backward, have the center draw-in groove (1035) that cooperates with described first draw-in groove (1034) on the middle part of described base (103), have one second draw-in groove (20) on the outer wall of the described first smooth joint (2012) and the described second smooth joint (2022), also comprise an anchor formula block (4), described center draw-in groove (1035) is passed and stretched in the lower end of the anchor pole (401) of described anchor formula block (4) between the described first smooth joint (2012) and the described second smooth joint (2022), respectively be provided with an anchor point (402) on the anchor formula block (4) of described anchor pole (401) left and right sides, two described anchor points (402) correspondence is stuck in described first draw-in groove (1034), and the part corresponding matching is stuck in described second draw-in groove (20) between each described anchor point (402) and the described anchor pole (401).
6. miniaturization two-way optical module according to claim 4 is characterized in that, described row's pin (3021) is 1mm spacing row pin.
7. miniaturization two-way optical module according to claim 3 is characterized in that, described base (103) and described capping (104) clamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200555670U CN201974550U (en) | 2011-03-04 | 2011-03-04 | Miniaturized double-channel optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200555670U CN201974550U (en) | 2011-03-04 | 2011-03-04 | Miniaturized double-channel optical module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201974550U true CN201974550U (en) | 2011-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200555670U Expired - Lifetime CN201974550U (en) | 2011-03-04 | 2011-03-04 | Miniaturized double-channel optical module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201974550U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116914A (en) * | 2011-03-04 | 2011-07-06 | 中国电子科技集团公司第八研究所 | Miniaturized double-path optical module |
| WO2022037122A1 (en) * | 2020-08-18 | 2022-02-24 | 华为技术有限公司 | Optical module, communications device, and poe device |
-
2011
- 2011-03-04 CN CN2011200555670U patent/CN201974550U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116914A (en) * | 2011-03-04 | 2011-07-06 | 中国电子科技集团公司第八研究所 | Miniaturized double-path optical module |
| CN102116914B (en) * | 2011-03-04 | 2012-12-19 | 中国电子科技集团公司第八研究所 | Miniaturized double-path optical module |
| WO2022037122A1 (en) * | 2020-08-18 | 2022-02-24 | 华为技术有限公司 | Optical module, communications device, and poe device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110914 Effective date of abandoning: 20130227 |
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| RGAV | Abandon patent right to avoid regrant |