CN103529524A - Optical signal receiving detector and manufacturing method thereof - Google Patents
Optical signal receiving detector and manufacturing method thereof Download PDFInfo
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- CN103529524A CN103529524A CN201310503725.8A CN201310503725A CN103529524A CN 103529524 A CN103529524 A CN 103529524A CN 201310503725 A CN201310503725 A CN 201310503725A CN 103529524 A CN103529524 A CN 103529524A
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Abstract
The invention relates to the field of photoelectron information, and aims at providing an optical signal receiving detector. With the adoption of the detector, an optical fiber introducing an optical signal transmits the optical signal to a photoelectric detection chip sequentially by a self-focusing lens and a convex lens, and the optical signal converts a divergent beam into a parallel beam by the self-focusing lens, and is focused on the photoelectric detection chip by the convex lens, so that the stability of photoelectric conversion can be ensured; the focused optical signal is high in centrality and high in identification degree, so that accurate photoelectric conversion is facilitated; the problems of difficult control of a light source incidence distance and an angle are solved by adjusting a pasting position of the photoelectric detection chip; the optical signal is converted into an electric signal, and amplified into a magnitude required by an output end by a signal amplification chip; and a clean signal is filtered by a filter capacitor. A manufacturing method of the detector can manufacture the optical signal receiving detector which is high in output signal-to-noise ratio, accurate in signal receiving, and firm and simple in structure.
Description
Technical field
The present invention relates to the field of opto-electronic information, refer to especially a kind of light signal pick-up probe and preparation method thereof.
Background technology
In optical communication technique, the sending and receiving end of Optical Fiber Transmission, conventionally use photo-detector to complete the conversion between light signal and electric signal, photodetector is light signal to be changed into the device of real-time electric signal, light signal is converted to electric signal and is amplified by the photodetection chip in photo-detector, then deliver to signal preamplifier, by integrated amplifier, the electric signal after the conversion of photodetection chip, amplification is amplified again, and then the output terminal that is delivered to signal preamplifier is for gathering.
During photodetection chip operation in photo-detector, need to use reverse bias voltage as supply voltage, and the supply voltage of photodetection chip is generally tens volts of magnitudes, directly power supply can produce more undesired signal.For above problem, traditional method is that the power input at photodetection chip connects decoupling capacitance.Although but this kind of method can reduce undesired signal to a certain extent, undesired signal can not be processed totally, the Signal-to-Noise of output is lower.And photodetector in the market exists in test process the impact of parasitic light large, and light source injects the uppity difficult point of angle, whole route complex structure, and detection accuracy is low, and cost of manufacture is high.
Summary of the invention
The present invention proposes a kind of light signal pick-up probe and preparation method thereof, and it is for realizing optical fiber telecommunications system receiver signal transmission opto-electronic conversion and amplification, and the reception conversion efficiency of light signal is high, and undesired signal is few, and structure is relatively simple, stable performance.
Technical scheme of the present invention is achieved in that a kind of light signal pick-up probe, comprise the base being communicated with power supply source, on base paster platform, be pasted with the photodetection chip of receiving optical signals, the output terminal of described photodetection chip is connected with signal amplification chip, and the output terminal of described signal amplification chip is connected with filter capacitor.The optical fiber of introducing light signal is passed to photodetection chip by GRIN Lens, convex lens by light signal successively, and described GRIN Lens, convex lens are coaxially fixed in socket, and described socket is welded on base photodetection chip is isolated in socket.
The light signal that Optical Fiber Transmission is come is divergent beams, divergent beams during apart from the variable in distance of ordinary lens optical window image distance also change thereupon, cause photoelectric transformation efficiency to change.For eliminating this kind of de-stabilising effect, through GRIN Lens, change divergent beams into parallel beam, and by convex lens focus to photodetection chip, so can guarantee the stability of opto-electronic conversion, and the light signal centrality after focusing on is strong, and identification is high, is conducive to the accurate conversion of photoelectricity, by the adjustment to photodetection chip attachment position, can solve light source incident distance and the uppity difficult problem of angle.Light signal changes electric signal into and amplifies and be processed into the magnitude that output terminal needs through signal amplification chip, and goes out clean signal through filter capacitor filtering.
Described base surface gold-plating, on the end face of base, be fixed with the gold-plated ceramic gasket of an one side, one side and the conducting of photodetection chip that this ceramic gasket is gold-plated, the gilding gold thread conducting for electric connecting terminal and ceramic gasket of described base, described photodetection chip is connected with signal amplification chip gold thread.Between base surface gold-plating and device, by gold thread, connect, the electric conductivity based on golden, can significantly reduce error and interference that other conduction connected modes are brought.And avoid the interference of static to photodetection chip, by ceramic gasket, isolate installation, and the gilding of ceramic gasket can guarantee the confession of photodetection chip to electrically contact.
The ideal chose connecting as conduction, between described photodetection chip and ceramic gasket and to be conductive silver glue between ceramic gasket and base bonding, avoids the adverse effect of bringing due to welding temperature.In like manner, described signal amplification chip, filter capacitor and base are also that conductive silver glue is bonding.
Described socket is metal material and is provided with optical window, and described base is TO-CAN type base, and socket adjustable resistance is weldingly fixed on base.
A method for making for light signal pick-up probe, comprises the steps,
Step 1: to TO-CAN base surface gold-plating;
Step 2: the gold-plated opposite face of ceramic gasket is bonded on TO-CAN base with conductive silver glue;
Step 3: signal amplification chip, filter capacitor are bonded to respectively on TO-CAN base with conductive silver glue;
Step 4: photodetection chip is bonded on the gilding of ceramic gasket with conductive silver glue;
Step 5: photodetection chip, signal amplification chip are connected to gold thread wire outward;
Step 6: will be with optical window metal pipe barrel resistance welded on TO-CAN base.
Therefore, by the present invention, realized the noiseless conversion to light signal, the high electric signal of output to-noise ratio, signal receives accurately, and stabilized structure is simple, is a high performance light signal pick-up probe.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of an embodiment of light signal pick-up probe of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
A kind of light signal pick-up probe, as shown in Figure 1, comprise the base 1 being communicated with power supply source, on base 1 paster platform, be pasted with the photodetection chip 2 of receiving optical signals, the output terminal of described photodetection chip 2 is connected with signal amplification chip 3, and the output terminal of described signal amplification chip 3 is connected with filter capacitor.The optical fiber 4 of introducing light signal is passed to photodetection chip 2 by GRIN Lens 5, convex lens 6 by light signal successively, described GRIN Lens 5, convex lens 6 are coaxially fixed in socket 7, and described socket 7 is welded on base 1 photodetection chip 2 is isolated in socket 7.
The light signal that Optical Fiber Transmission is come is divergent beams, divergent beams during apart from the variable in distance of ordinary lens optical window image distance also change thereupon, cause photoelectric transformation efficiency to change.For eliminating this kind of de-stabilising effect, through GRIN Lens 5, change divergent beams into parallel beam, and focused on photodetection chip 2 by convex lens 6, so can guarantee the stability of opto-electronic conversion, and the light signal centrality after focusing on is strong, and identification is high, is conducive to the accurate conversion of photoelectricity, by photodetection chip 2 being mounted to the adjustment of position, can solve light source incident distance and the uppity difficult problem of angle.Light signal changes electric signal into and amplifies and be processed into the magnitude that output terminal needs through signal amplification chip 3, and goes out clean signal through filter capacitor filtering.
Described base 1 surface gold-plating, on the end face of base 1, be fixed with the gold-plated ceramic gasket of an one side 8, one side and 2 conductings of photodetection chip that this ceramic gasket 8 is gold-plated, the gilding gold thread conducting for electric connecting terminal and ceramic gasket 8 of described base 1, described photodetection chip 2 is connected with signal amplification chip 3 gold threads.Between base 1 surface gold-plating and device, by gold thread, connect, the electric conductivity based on golden, can significantly reduce error and interference that other conduction connected modes are brought.And avoid the interference of static to photodetection chip 2, by ceramic gasket 8, isolate installation, and the gilding of ceramic gasket 8 can guarantee the confession of photodetection chip 2 to electrically contact.
The ideal chose connecting as conduction, it is bonding that 1 of 8 of described photodetection chip 2 and ceramic gaskets and ceramic gasket 8 and base are conductive silver glue, avoids the adverse effect of bringing due to welding temperature.In like manner, described signal amplification chip 3, filter capacitor and base 1 are also that conductive silver glue is bonding.
Described socket 7 is for metal material and be provided with optical window, and described base 1 is TO-CAN type base, and socket 7 adjustable resistances are weldingly fixed on base 1.
A method for making for light signal pick-up probe, comprises the steps,
Step 1: to TO-CAN base surface gold-plating;
Step 2: the gold-plated opposite face of ceramic gasket 8 is bonded on TO-CAN base with conductive silver glue;
Step 3: signal amplification chip 3, filter capacitor are bonded to respectively on TO-CAN base with conductive silver glue;
Step 4: photodetection chip 2 use conductive silver glues are bonded on the gilding of ceramic gasket 8;
Step 5: to photodetection chip 2, the outer connection gold thread of signal amplification chip 3 wire;
Step 6: will be with optical window metal pipe barrel 7 resistance welded on TO-CAN base.
Therefore, by the present invention, realized the noiseless conversion to light signal, the high electric signal of output to-noise ratio, signal receives accurately, and stabilized structure is simple, is a high performance light signal pick-up probe.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. a light signal pick-up probe, comprise the base being communicated with power supply source, on base paster platform, be pasted with the photodetection chip of receiving optical signals, the output terminal of described photodetection chip is connected with signal amplification chip, the output terminal of described signal amplification chip is connected with filter capacitor, it is characterized in that: the optical fiber of introducing light signal passes through GRIN Lens successively, convex lens are passed to photodetection chip by light signal, described GRIN Lens, convex lens are coaxially fixed in socket, described socket is welded on base photodetection chip is isolated in socket.
2. light signal pick-up probe according to claim 1, it is characterized in that: described base surface gold-plating, on the end face of base, be fixed with the gold-plated ceramic gasket of an one side, one side and the conducting of photodetection chip that this ceramic gasket is gold-plated, the gilding gold thread conducting for electric connecting terminal and ceramic gasket of described base, described photodetection chip is connected with signal amplification chip gold thread.
3. light signal pick-up probe according to claim 2, is characterized in that: between described photodetection chip and ceramic gasket and to be conductive silver glue between ceramic gasket and base bonding.
4. light signal pick-up probe according to claim 1, is characterized in that: described signal amplification chip, filter capacitor and base are that conductive silver glue is bonding.
5. light signal pick-up probe according to claim 1, is characterized in that: described socket is metal material and is provided with optical window.
6. according to the light signal pick-up probe described in any one in claim 1 to 4, it is characterized in that: described base is TO-CAN type base.
7. a method for making for light signal pick-up probe, is characterized in that:
Step 1: to TO-CAN base surface gold-plating;
Step 2: the gold-plated opposite face of ceramic gasket is bonded on TO-CAN base with conductive silver glue;
Step 3: signal amplification chip, filter capacitor are bonded to respectively on TO-CAN base with conductive silver glue;
Step 4: photodetection chip is bonded on the gilding of ceramic gasket with conductive silver glue;
Step 5: photodetection chip, signal amplification chip are connected to gold thread wire outward;
Step 6: will be with optical window metal pipe barrel resistance welded on TO-CAN base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310503725.8A CN103529524A (en) | 2013-10-21 | 2013-10-21 | Optical signal receiving detector and manufacturing method thereof |
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| CN201310503725.8A CN103529524A (en) | 2013-10-21 | 2013-10-21 | Optical signal receiving detector and manufacturing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076457A (en) * | 2014-07-25 | 2014-10-01 | 珠海保税区光联通讯技术有限公司 | Light emission component |
| CN106410601A (en) * | 2016-06-14 | 2017-02-15 | 武汉宜鹏光电科技有限公司 | TO Can LD device without backlight monitoring and preparation technology thereof |
| CN107389107A (en) * | 2017-09-14 | 2017-11-24 | 陈郁芝 | A kind of optical fiber Deviation rectifier |
| CN110967684B (en) * | 2019-11-21 | 2021-11-26 | 宁波飞芯电子科技有限公司 | Size determination method and device for photoelectric detector and photoelectric detector |
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| CN102523043A (en) * | 2011-12-15 | 2012-06-27 | 深圳市易飞扬通信技术有限公司 | Photodetector |
| CN203039695U (en) * | 2012-12-20 | 2013-07-03 | 武汉电信器件有限公司 | 40G PIN/TIA detector |
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| US4616899A (en) * | 1984-08-31 | 1986-10-14 | Gte Laboratories Incorporated | Methods of and apparatus for coupling an optoelectronic component to an optical fiber |
| US20040247242A1 (en) * | 2003-06-06 | 2004-12-09 | Honeywell International Inc | Pluggable optical optic system having a lens fiber stop |
| US20070081771A1 (en) * | 2004-10-29 | 2007-04-12 | Lim Alvin T Y | Electro-optical subassemblies and method for assembly thereof |
| CN201307169Y (en) * | 2008-08-11 | 2009-09-09 | 光环科技股份有限公司 | A laser sub-module structure of multimode fiber |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076457A (en) * | 2014-07-25 | 2014-10-01 | 珠海保税区光联通讯技术有限公司 | Light emission component |
| CN106410601A (en) * | 2016-06-14 | 2017-02-15 | 武汉宜鹏光电科技有限公司 | TO Can LD device without backlight monitoring and preparation technology thereof |
| CN107389107A (en) * | 2017-09-14 | 2017-11-24 | 陈郁芝 | A kind of optical fiber Deviation rectifier |
| CN110967684B (en) * | 2019-11-21 | 2021-11-26 | 宁波飞芯电子科技有限公司 | Size determination method and device for photoelectric detector and photoelectric detector |
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Application publication date: 20140122 |