CN218182220U

CN218182220U - APD optical receiver

Info

Publication number: CN218182220U
Application number: CN202222432330.0U
Authority: CN
Inventors: 梁永乐; 梁贵新; 尹远景
Original assignee: Guangzhou Mingyang Photoelectric Technology Co ltd
Current assignee: Guangzhou Mingyang Photoelectric Technology Co ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2022-12-30
Anticipated expiration: 2032-09-14

Abstract

The utility model discloses a APD optical receiver, include: a tube holder; the top surface of the tube seat is provided with an APD chip, a chip capacitor, an amplifier and a power supply capacitor; the output end of the APD chip is electrically connected with a chip capacitor, and the chip capacitor is electrically connected with the input end of the amplifier; the power supply end of the amplifier is electrically connected with the power supply capacitor; the bottom of the tube seat is also provided with a plurality of pins for electrically connecting with external components; a plurality of pins penetrate through the tube seat and are respectively electrically connected with the output end of the amplifier and the power supply capacitor; to sum up, the utility model provides an optical receiver with filter capacitance can reduce the light signal conversion and become the produced noise signal of telecommunication in-process to the influence of former signal, still sets up resistance signal amplifier on the tube socket, can improve the intensity of the signal of telecommunication and set up the glass piece on the pipe cap into plane glass piece in order to adapt to remote transmission, can avoid because the poor problem of the light signal reception ability that the coaxiality leads to, has improved the yields of product effectively.

Description

APD optical receiver

Technical Field

The utility model relates to an optical receiver technical field, concretely relates to APD optical receiver.

Background

In the prior art, an optical signal detector is generally used for receiving an optical signal and converting the optical signal into an electrical signal, the existing optical receiver has poor anti-interference capability, and more noise is generated in the electrical signal converted from a signal with higher frequency, so that the original signal is easily influenced.

The existing pipe cap is generally provided with a convex lens, so that received parallel laser can be focused on a photodiode to improve the light receiving quantity of the photodiode, but once the coaxiality between the pipe cap and a pipe body cannot reach the standard, the receiving performance of the light receiver is reduced, and welded defective products cannot be reused and can only be discarded, so that the pipe cap structure needs to have higher requirements on a coaxial packaging process, the yield is lower, and the production cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to disclose an APD optical receiver, solved that current optical receiver exists to the interference killing feature of high frequency signal less than, the problem of being influenced by noise signal easily.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an APD optical receiver, comprising: a tube holder; the top surface of the tube seat is provided with an APD chip for receiving optical signals and converting the optical signals into electric signals, a chip capacitor for filtering the electric signals converted by the APD chip, an amplifier for amplifying the filtered electric signals and a power supply capacitor for filtering a power supply of the amplifier; the output end of the APD chip is electrically connected with a chip capacitor, and the chip capacitor is electrically connected with the input end of the amplifier; the power supply end of the amplifier is electrically connected with the power supply capacitor; the bottom of the tube seat is also provided with a plurality of pins for electrically connecting with external components; and a plurality of pins penetrate through the tube seat and are respectively and electrically connected with the output end of the amplifier and the power supply capacitor.

Optionally, a tube cap for providing a sealed environment is further fixedly arranged on the tube seat, the bottom edge of the tube cap is fixedly connected with the tube seat, and a glass sheet for light to pass through is arranged on the tube cap; the glass sheet is positioned right above the APD chip.

Optionally, a boss is arranged on the tube seat, and a flared opening which is matched with the edge of the tube seat to increase the contact area is arranged on the edge of the bottom of the tube cap.

Optionally, the tube seat, the tube cap and the glass sheet are all circular.

Optionally, the diameter of the glass sheet is 2.5MM, the diameter of the pipe cap is 4.7MM, the diameter of the bottom flare of the pipe cap is 5.4MM, and the diameter of the pipe seat is 5.3MM.

Optionally, a plurality of the pins are all welded with the tube seat through gold wires.

Optionally, the bottom of the tube is fixedly provided with seven pins, the seven pins are arranged at the bottom of the tube seat in an annular array, and the annular array formed by the seven pins is coaxial with the tube seat.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a APD optical receiver, include: a tube holder; the top surface of the tube seat is provided with an APD chip for receiving optical signals and converting the optical signals into electric signals, a chip capacitor for filtering the electric signals converted by the APD chip, an amplifier for amplifying the filtered electric signals and a power supply capacitor for filtering a power supply of the amplifier; the output end of the APD chip is electrically connected with a chip capacitor, and the chip capacitor is electrically connected with the input end of the amplifier; the power supply end of the amplifier is electrically connected with the power supply capacitor; the bottom of the tube seat is also provided with a plurality of pins for electrically connecting with an external component; the pins penetrate through the tube seat and are respectively and electrically connected with the output end of the amplifier and the power supply capacitor; to sum up, the utility model discloses a set up filter capacitor on the tube socket, can reduce the light signal conversion and become the produced noise signal of telecommunication in-process to the influence of former signal, still set up resistance signal amplifier on the tube socket, can improve the intensity of the signal of telecommunication in order to adapt to remote transmission.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is an exploded schematic view of an internal structure of an APD optical receiver according to the present invention;

FIG. 2 is an assembled schematic view of FIG. 1;

FIG. 3 is a schematic cross-sectional view of FIG. 2;

in the figure, 1, tube seat; 2. an APD chip; 3. a chip capacitor; 4. an amplifier; 5. a power supply capacitor; 6. a pipe cap; 7. a glass sheet; 8. flaring; 9. a boss; 10. a pin.

Detailed Description

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature. The terms "vertical," "horizontal," "left," "right," "up," "down," and similar expressions are used for illustrative purposes only and do not indicate or imply that the device or element so referred to must be oriented, constructed and operated in a specific orientation and therefore should not be construed as limiting the invention.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example one

An APD optical receiver, as shown in fig. 1-3, comprising: a tube holder 1; the top surface of the tube seat 1 is provided with an APD chip 2 for receiving optical signals and converting the optical signals into electrical signals, a chip capacitor 3 for filtering the electrical signals converted by the APD chip 2, an amplifier 4 for amplifying the filtered electrical signals and a power supply capacitor 5 for filtering a power supply of the amplifier 4; the output end of the APD chip 2 is electrically connected with a chip capacitor 3, and the chip capacitor 3 is electrically connected with the input end of an amplifier 4; the power supply end of the amplifier 4 is electrically connected with the power supply capacitor 5; the bottom of the tube seat 1 is also provided with a plurality of pins 10 which are used for being electrically connected with an external component; and a plurality of pins 10 are respectively and electrically connected with the output end of the amplifier 4 and the power supply capacitor 5 after penetrating through the tube seat 1.

Specifically, a conventional optical receiver is configured to convert a received optical signal into a corresponding electrical signal according to frequency, but in an actual use process, when the received optical signal is weak or receives more interference signals, the electrical signal at an output end of the optical receiver is seriously distorted and cannot restore original content of the signal, and meanwhile, the electrical signal generated by the optical receiver is weak and is difficult to transmit remotely. Therefore, in order to solve the above problem, the present application provides an APD optical receiver, in which an APD chip 2 for converting a received optical signal into an electrical signal is disposed on a tube seat 1, specifically, the APD chip 2 is an avalanche photodiode, and can convert the received optical energy into an electronic transition to form a corresponding electrical signal. Still be equipped with the amplifier 4 that is used for enlargiing the signal of telecommunication simultaneously on tube socket 1 the utility model discloses well amplifier 4 chooses for use IC-TIA transimpedance value amplifier 4, can enlarge the signal of telecommunication that APD chip 2 produced, and simultaneously, official upper left still is equipped with two kinds of electric capacities, one kind is the power supply electric capacity 5 that is used for carrying out the filtering to signal amplifier 4's power supply, one kind is the chip electric capacity 3 that is used for carrying out the enlargeing to input amplifier 4's signal of telecommunication, the quantity of power supply electric capacity 5 is two, the quantity of chip electric capacity 3 also is two, can filter high frequency current and low frequency current respectively, only let the band pass signal who satisfies people's needs pass through, with the purpose that reaches accurate filtering, the stability of the signal of telecommunication of photoreceiver output has been improved. Meanwhile, the amplifier 4 can amplify the electrical signal to improve the signal intensity of the optical receiver and increase the signal transmission distance of the optical receiver. The chip capacitor 3 is used for filtering unamplified electric signals, so one end of the chip capacitor 3 is connected with the output end of the APD chip 2, the other end of the chip capacitor is connected with the input end of the amplifier 4, and the power supply end of the amplifier 4 needs to be connected with an external component through the pin 10, so one end of the power supply capacitor 5 is connected with the power supply end of the amplifier 4, and the other end of the power supply capacitor is connected with the pin 10.

Further, a pipe cap 6 for providing a sealed environment is fixedly arranged on the pipe seat 1, the bottom edge of the pipe cap 6 is fixedly connected with the pipe seat 1, and a glass sheet 7 for light to pass through is arranged on the pipe cap 6; the glass sheet 7 is located directly above the APD chip 2.

Specifically, the cap 6 is used to protect the components on the socket 1 and provide a hermetic environment for the optical receiver, and is filled with inert gas to improve the lifetime of the components. The glass sheet 7 of pipe cap 6 is the level crossing, compares the spotlight effect that utilizes convex lens and enlargies the light signal, the utility model discloses directly use signal amplifier 4 to enlarge the signal of telecommunication. Therefore, when the tube cap 6 and the tube seat 1 are assembled, the tube cap 6 and the tube seat 1 have no requirement on coaxiality, and even if slight deviation exists, the receiving of optical signals cannot be influenced, so that the yield of products is effectively improved, and the production cost of a factory is reduced.

Furthermore, a boss 9 is arranged on the tube seat 1, and a flared opening 8 which is matched with the edge of the tube seat 1 to increase the contact area is arranged on the bottom edge of the tube cap 6.

Particularly, be welded connection between tube socket 1 and the pipe cap 6, boss 9 and flaring 8's effect is the area of contact of increase both, also be that the bottom of pipe cap 6 can link to each other with the bottom surface of tube socket 1 promptly, and the inside wall of pipe cap 6 can link to each other with the lateral wall of boss 9, guarantees intraductal gas tightness on the one hand, and on the other hand also guarantees welded stability through improving area of contact.

Furthermore, in order to reduce the manufacturing cost, the tube seat 1, the tube cap 6 and the glass sheet 7 are all circular, so that the assembly difficulty between the tube seat 1 and the tube cap 6 can be reduced, and the assembly precision of the tube cap 6 and the tube seat 1 is improved.

Further, the diameter of the glass sheet 7 is 2.5MM, the diameter of the pipe cap 6 is 4.7MM, the diameter of the bottom flaring 8 of the pipe cap 6 is 5.4MM, and the diameter of the pipe seat 1 is 5.3MM.

Furthermore, a plurality of pins 10 are all welded with the tube seat 1 through gold wires. The resistance of the welding part can be reduced by gold wire welding, and the signal transmission is facilitated.

Furthermore, seven pins 10 are fixedly arranged at the bottom of the tube, the seven pins 10 are arranged at the bottom of the tube seat 1 in an annular array, and the annular array formed by the seven pins 10 is coaxial with the tube seat 1.

To sum up, the utility model discloses a provide an optical receiver with filter capacitance can reduce the optical signal conversion and become the produced noise signal of telecommunication in-process to the influence of former signal, still sets up on tube socket 1 and strides resistance signal amplifier 4, can improve the intensity of the signal of telecommunication in order to adapt to remote transmission, sets up glass piece 7 on the tube cap 6 into plane glass piece 7, can avoid because the poor problem of the optical signal receptivity that leads to of axiality, has improved the yields of product effectively.

The present invention is not limited to the above embodiment, and various modifications and variations of the present invention are also intended to be included within the scope of the claims and the equivalent technical scope of the present invention if they do not depart from the spirit and scope of the present invention.

Claims

1. An APD optical receiver, comprising: a tube holder; the top surface of the tube seat is provided with an APD chip for receiving optical signals and converting the optical signals into electric signals, a chip capacitor for filtering the electric signals converted by the APD chip, an amplifier for amplifying the filtered electric signals and a power supply capacitor for filtering a power supply of the amplifier;

the output end of the APD chip is electrically connected with a chip capacitor, and the chip capacitor is electrically connected with the input end of the amplifier; the power supply end of the amplifier is electrically connected with the power supply capacitor;

the bottom of the tube seat is also provided with a plurality of pins for electrically connecting with an external component; and the plurality of pins penetrate through the tube seat and are respectively and electrically connected with the output end of the amplifier and the power supply capacitor.

2. The APD optical receiver of claim 1, wherein the tube holder is further fixedly provided with a cap for providing a sealed environment, a bottom edge of the cap is fixedly connected with the tube holder, and the cap is provided with a glass sheet for light to pass through; the glass sheet is located directly above the APD chip.

3. The APD optical receiver of claim 2 in which the stem is provided with a boss and the bottom edge of the cap is provided with a flare adapted to the stem edge to increase the contact area.

4. The APD optical receiver of claim 3, wherein the tube seat, the tube cap, and the glass sheet are circular.

5. The APD light receiver of claim 4, wherein the glass sheet has a diameter of 2.5MM, the cap has a diameter of 4.7MM, the bottom flare of the cap has a diameter of 5.4MM, and the stem has a diameter of 5.3MM.

6. The APD optical receiver of claim 5, wherein a plurality of the pins are gold wire bonded to the header.

7. The APD optical receiver of claim 6, wherein seven pins are fixedly disposed on the bottom of the tube base, wherein the seven pins are arranged in an annular array on the bottom of the tube base, and the annular array formed by the seven pins is disposed coaxially with the tube base.