CN210137327U - Detector TO-CAN and detector assembly - Google Patents

Abstract

The embodiment of the utility model discloses detector TO-CAN and detector assembly, include: the device comprises a TO base, cushion blocks and a detector chip; the cushion block comprises a first end face and a second end face which are oppositely arranged, and a plane where the first end face is located is intersected with a plane where the second end face is located; the first end face is arranged on the TO base; the detector chip is arranged on the second end face, and a light receiving face of the detector chip is arranged on the circle center of the TO base. The embodiment of the utility model provides a detector TO-CAN sets up the cushion below the detector chip into the inclined plane structure, and then the light receiving face of detector chip also inclines with same angle, and the reverberation on the light receiving face of detector chip CAN't get back TO former light path, need not TO adopt the light path off-axis TO realize reducing the inside return loss of detector TO-CAN, CAN be applicable TO the very high application of return loss requirements such as wavelength division multiplexing system more.

Description

Detector TO-CAN and detector assembly

[ technical field ] A method for producing a semiconductor device

The utility model relates TO an optical communication technical field especially relates TO a detector TO-CAN and detector assembly.

[ background of the invention ]

Currently, in the field of optical communication, as shown in fig. 1, a detector TO-CAN100 mainly comprises a TO base 101, a spacer block 102, a detector chip 103, a transimpedance amplifier chip 104 and a TO cap 105, wherein the TO cap 105 usually has one of a water drop lens, a ball lens or a non-ball lens. The detector TO-CAN100 is assembled with various optical adapters into a detector assembly through a gluing or welding process. The optical detection function of the detector TO-CAN100 is realized in the following way: an optical signal TO be detected is firstly converged TO the detector chip 103 through a lens on the TO cap 105 TO realize photoelectric conversion, and the converted electric signal is amplified through the transimpedance amplifier chip 104. As shown in fig. 2, some of the detectors TO-CAN200 have a TO base 201, a spacer 202, a detector chip 203 and a TO cap 204, and without the transimpedance amplifier chip 104, the electrical signal is directly led out from a pin column of the TO base 201, so that the output of an analog electrical signal CAN be realized.

In the prior art, in order TO reduce the internal return loss of the detector TO-CAN, a light path off-axis mode is adopted, a light path entering the TO cap lens and an optical axis of the lens form a certain included angle, so that reflected light cannot return TO a signal light path again, and the internal return loss of the detector TO-CAN is reduced. However, the optical path off-axis structure CAN cause dislocation between the TO-CAN detector and the front end signal optical path structure, and the structural design is difficult.

In view of the above, overcoming the drawbacks of the prior art is an urgent problem in the art.

[ Utility model ] content

The utility model discloses the technical problem that will solve is: the problem of adopt the light path off-axis mode TO reduce the inside return loss of detector TO-CAN among the prior art, CAN lead TO detector TO-CAN and the components and parts of front end signal light path structure TO appear the dislocation, cause structural design difficulty is solved.

The utility model adopts the following technical scheme:

in a first aspect, the utility model provides a detector TO-CAN, include: the device comprises a TO base 301, a cushion block 302 and a detector chip 303;

the pad block 302 comprises a first end face 3021 and a second end face 3022 which are oppositely arranged, and a plane where the first end face 3021 is located intersects with a plane where the second end face 3022 is located;

the first end face 3021 is disposed on the TO mount 301;

the probe chip 303 is disposed on the second end face 3022, and a light receiving surface of the probe chip 303 is disposed on a center of a circle of the TO base 301.

Preferably, an included angle between a plane where the first end face 3021 is located and a plane where the second end face 3022 is located is 6 ° to 10 °.

Preferably, the included angle between the plane of the first end face 3021 and the plane of the second end face 3022 is 8 °.

Preferably, the probe TO-CAN300 further comprises a TO cap 305;

the TO base 301 and the TO cap 305 are fixedly coupled, and a lens is arranged at a light inlet of the TO cap 305.

Preferably, the TO base 301 and the TO cap 305 are fixed by sealing.

Preferably, the detector TO-CAN300 further comprises a transimpedance amplifier chip 304;

the detector chip 303 is configured TO perform photoelectric conversion on an optical signal collected by the lens of the TO cap 305;

the transimpedance amplifier chip 304 is configured to amplify the converted electrical signal.

Preferably, the end surface of the detector chip 303 on the light receiving surface side and the transimpedance amplifier chip 304 are connected by a gold wire.

Preferably, the end face of the light receiving surface side of the probe chip 403 and the first pin 4011 of the TO base 401 are connected by a gold wire; the end face of the pad block 402 connected with the detector chip 403 is connected with the second pin 4012 of the TO base 401 by a gold wire.

Preferably, the probe chip 303 is disposed on the second end face 3022, and a light receiving surface of the probe chip 303 is disposed on a center of the TO base 301, specifically including:

an alignment mark 3023 is provided on the second end face 3022, and the alignment mark 3023 is used TO position the position of the probe chip 303 so that the light receiving surface of the probe chip 303 on the second end face 3022 is disposed on the center of the circle of the TO base 301.

In a second aspect, the present invention provides a probe assembly comprising a probe TO-CAN51 and an adapter 52 according TO any one of the first aspects;

the detector TO-CAN51 is coupled with the adapter 52;

the detector TO-CAN51 comprises:

the device comprises a TO base 301, a cushion block 302 and a detector chip 303;

the pad block 302 comprises a first end face 3021 and a second end face 3022 which are oppositely arranged, and a plane where the first end face 3021 is located intersects with a plane where the second end face 3022 is located;

the first end face 3021 is disposed on the TO mount 301;

the probe chip 303 is disposed on the second end face 3022, and a light receiving surface of the probe chip 303 is disposed on a center of a circle of the TO base 301.

The embodiment of the utility model provides a detector TO-CAN and detector assembly, include: the device comprises a TO base, cushion blocks and a detector chip; the cushion block comprises a first end face and a second end face which are oppositely arranged, and a plane where the first end face is located is intersected with a plane where the second end face is located; the first end face is arranged on the TO base; the detector chip is arranged on the second end face, and a light receiving face of the detector chip is arranged on the circle center of the TO base. The embodiment of the utility model provides a detector TO-CAN sets up the cushion below the detector chip into the inclined plane structure, and then the light receiving face of detector chip also inclines with same angle, and the reverberation on the light receiving face of detector chip CAN't get back TO former light path, need not TO adopt the light path off-axis TO realize reducing the inside return loss of detector TO-CAN, CAN be applicable TO the very high application of return loss requirements such as wavelength division multiplexing system more.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic diagram of a TO-CAN probe provided by the prior art;

FIG. 2 is a schematic diagram of another prior art probe TO-CAN architecture;

FIG. 3 is a schematic structural diagram of a TO-CAN detector provided by an embodiment of the present invention;

FIG. 4 is a front view of a detector chip and a block of a TO-CAN provided by an embodiment of the present invention;

FIG. 5 is a top view of a probe TO-CAN pad and a probe chip provided by an embodiment of the present invention;

FIG. 6 is a schematic diagram of the positions of alignment marks disposed on a spacer of a TO-CAN detector according TO an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of another TO-CAN detector provided by an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a detector assembly according to an embodiment of the present invention.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "up", "down", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

The first embodiment is as follows:

the embodiment of the utility model provides a detector TO-CAN, as shown in fig. 3 TO 5, include: the device comprises a TO base 301, a cushion block 302 and a detector chip 303;

the pad block 302 comprises a first end face 3021 and a second end face 3022 which are oppositely arranged, and a plane where the first end face 3021 is located intersects with a plane where the second end face 3022 is located;

the first end face 3021 is disposed on the TO mount 301;

the probe chip 303 is disposed on the second end face 3022, and a light receiving surface of the probe chip 303 is disposed on a center of a circle of the TO base 301.

The embodiment of the utility model provides a detector TO-CAN sets up the cushion below the detector chip into the inclined plane structure, and then the light receiving face of detector chip also inclines with same angle, and the reverberation on the light receiving face of detector chip CAN't get back TO former light path, need not TO adopt the light path off-axis TO realize reducing the inside return loss of detector TO-CAN, CAN be applicable TO the very high application of return loss requirements such as wavelength division multiplexing system more.

With reference TO fig. 3 TO fig. 5, a structure of the detector TO-CAN300 according TO the first embodiment of the present invention is described. The cushion block 302 with the inclined plane structure is arranged on the TO base 301, the detector chip 302 is arranged on the inclined plane of the cushion block 302, the light receiving surface of the detector chip 303 is also inclined at the same angle of the cushion block 302, the light receiving surface of the detector chip 303 is arranged on the circle center of the TO base 301, and return loss can be reduced.

Specifically, the pad block 302 includes a first end surface 3021 and a second end surface 3022, the first end surface 3021 and the second end surface 3022 are disposed opposite TO each other, the first end surface 3021 is disposed on the TO base 301, the probe chip 303 is disposed on the second end surface 3022, and a light receiving surface of the probe chip 303 is located on a center of the TO base 301.

In combination with the first embodiment of the present invention, referring TO fig. 6, in order TO make the light receiving surface of the detector chip 303 be located at the center of the TO base 301, an alignment mark 3023 is provided on the second end surface 3022, and the number of the alignment mark 3023 is preferably 4, which corresponds TO four corners of the outline of the detector chip 303, so that the detector chip 303 can be precisely welded TO a specific position during flip-chip bonding, and the light receiving surface of the detector chip 303 located on the second end surface 3022 is located at the center of the TO base 301.

With reference TO fig. 3 TO fig. 5, in order TO reduce the internal return loss of the detector TO-CAN300 and TO receive and convert the optical signal without affecting the light receiving surface of the detector chip 303, the included angle of the second end surface 3022 of the spacer 302 with respect TO the first end surface 3021 is designed TO be 6 ° TO 10 °. Meanwhile, the light receiving surface of the detector chip 303 is inclined by 6 degrees to 10 degrees, and the reflected light on the light receiving surface of the detector chip 303 cannot return to the original light path, so that the purpose of reducing return loss can be realized. In one particular embodiment, the second end face 3022 of the block 302 is angled at 8 ° relative to the first end face 3021.

With reference TO fig. 3, in combination with the first embodiment of the present invention, the TO-CAN300 of the detector further includes a TO cap 305, the TO cap 305 is coupled with the TO base 301 and fixed, and in a specific implementation, the TO cap 305 is fixed with the TO base 301 by a sealing welding method. A lens is further arranged at the light inlet of the TO cap 305, and since the light receiving surface of the detector chip 303 is located at the center of the TO base 301, a light signal TO be detected can be converged TO the light receiving surface of the detector chip 303 through the lens on the TO cap 305 TO realize photoelectric conversion.

With reference TO fig. 3, the detector TO-CAN300 further includes a transimpedance amplifier chip 304, and after the detector chip 303 is used for performing photoelectric conversion on an optical signal converged by the lens of the TO cap 305, the transimpedance amplifier chip 304 is used for amplifying the converted electrical signal.

With reference TO fig. 3, inside the TO-CAN300 of the detector, the detector chip 303 and the transimpedance amplifier chip 304 are connected by gold wires. Specifically, the end surface on the light receiving surface side of the detector chip 303 and the transimpedance amplifier chip 304 are electrically connected by a gold wire.

Example two:

the embodiment of the utility model provides a second provides a detector TO-CAN400, as shown in fig. 7, with the embodiment of the utility model provides a together include TO base 401, have inclination's cushion 402, set up on cushion 402 inclined plane detector chip 403 and with the fixed TO cap 404 of TO base 401 coupling, the optical signal who incides from the lens of TO cap 404 assembles TO detector chip 403 and realizes photoelectric conversion. And the utility model discloses the difference lies in that of the embodiment one, the utility model discloses a two do not set up transimpedance amplifier chip, and the signal of telecommunication after the conversion of detector chip 403 is directly drawn forth from TO base 401's pin, realizes the output of analog signal of telecommunication.

With reference TO fig. 7, in the second embodiment of the present invention, inside the TO-CAN400 of the detector, electrical connection between the components is realized by gold wire bonding. Specifically, the end face of the light receiving surface side of the detector chip 403 and the first pin 4011 of the TO base 401 are connected by a gold wire; the end face of the pad 402 connected TO the probe chip 403 is connected TO the second pin 4012 of the TO base 401 by a gold wire.

In combination with the second embodiment of the present invention, the structure of the pad 402 is the same as that of the pad 302. For example, the inclination angle of the pad 402 can be determined according to the first embodiment of the present invention, that is, the included angle between the second end surface 3022 of the pad 302 and the first end surface 3021 is designed to be 6 ° to 10 °; in one particular embodiment, the second end face 3022 of the block 302 is angled at 8 ° relative to the first end face 3021.

Example three:

the third embodiment of the present invention provides a probe assembly 50, as shown in fig. 8, including the probe TO-CAN51 and the adapter 52 according TO the first embodiment of the present invention or any one of the second embodiment of the present invention;

the detector TO-CAN51 is coupled with the adapter 52;

in a specific embodiment, the structure of the probe TO-CAN51 is described by taking the probe TO-CAN300 as an example in the first embodiment of the present invention:

the detector TO-CAN300 comprises:

the device comprises a TO base 301, a cushion block 302 and a detector chip 303;

the pad block 302 comprises a first end face 3021 and a second end face 3022 which are oppositely arranged, and a plane where the first end face 3021 is located intersects with a plane where the second end face 3022 is located;

the first end face 3021 is disposed on the TO mount 301;

the probe chip 303 is disposed on the second end face 3022, and a light receiving surface of the probe chip 303 is disposed on a center of a circle of the TO base 301.

In combination with the third embodiment of the present invention, the included angle between the plane of the first end surface 3021 and the plane of the second end surface 3022 is 6 to 10 degrees; in a specific embodiment, the included angle between the plane of the first end surface 3021 and the plane of the second end surface 3022 is 8 °.

With the third embodiment of the present invention, the TO-CAN300 further includes a TO cap 305; the TO base 301 and the TO cap 305 are fixedly coupled, and a lens is arranged at a light inlet of the TO cap 305; in one specific embodiment, the TO base 301 and the TO cap 305 are secured by a seal.

With the third embodiment of the present invention, the TO-CAN300 further includes a transimpedance amplifier chip 304; the detector chip 303 is configured TO perform photoelectric conversion on an optical signal collected by the lens of the TO cap 305; the transimpedance amplifier chip 304 is configured to amplify the converted electrical signal.

Combine the embodiment of the utility model provides a three, the terminal surface of the light receiving face one side of detector chip 303 with connect with the gold thread between the transimpedance amplifier chip 304.

In combination with the third embodiment of the present invention, the TO-CAN51 detector and the adapter 52 are preferably connected by gluing or welding.

The embodiment of the utility model provides a detector subassembly includes detector TO-CAN, and the cushion below the detector chip sets up TO the inclined plane structure, and then the light receiving face of detector chip also with same angle slope, and the reverberation on the light receiving face of detector chip CAN't get back TO original light path, need not TO adopt the light path off-axis TO realize reducing the inside return loss of detector TO-CAN, CAN be applicable TO the very high application of return loss requirements such as wavelength division multiplexing system more.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A probe TO-CAN, comprising: the device comprises a TO base (301), a cushion block (302) and a detector chip (303);

the cushion block (302) comprises a first end face (3021) and a second end face (3022) which are oppositely arranged, and a plane where the first end face (3021) is located is intersected with a plane where the second end face (3022) is located;

the first end face (3021) is provided on the TO base (301);

the detector chip (303) is arranged on the second end face (3022), and a light receiving face of the detector chip (303) is arranged on the center of the TO base (301).

2. The probe TO-CAN according TO claim 1, characterized in that the angle between the plane of the first end face (3021) and the plane of the second end face (3022) is 6 ° TO 10 °.

3. The probe TO-CAN according TO claim 2, characterized in that the angle between the plane of the first end face (3021) and the plane of the second end face (3022) is 8 °.

4. The probe TO-CAN according TO claim 1 or 2, characterized in that the probe TO-CAN (300) further comprises a TO cap (305);

the TO base (301) is fixedly coupled with the TO cap (305), and a lens is arranged at a light inlet of the TO cap (305).

5. The probe TO-CAN according TO claim 4, wherein the TO base (301) and the TO cap (305) are fixed by soldering and sealing.

6. The detector TO-CAN according TO claim 4, wherein the detector TO-CAN (300) further comprises a transimpedance amplifier chip (304);

the detector chip (303) is used for performing photoelectric conversion on an optical signal converged by a lens of the TO cap (305); the transimpedance amplifier chip (304) is used for amplifying the converted electric signal.

7. The probe TO-CAN according TO claim 6, wherein the end surface on the light receiving surface side of the probe chip (303) and the transimpedance amplifier chip (304) are connected by a gold wire.

8. The probe TO-CAN according TO claim 4, wherein an end face on a light receiving face side of the probe chip (403) and the first pin (4011) of the TO base (401) are connected by a gold wire; the end face of the cushion block (402) connected with the detector chip (403) is connected with the second pin (4012) of the TO base (401) through a gold wire.

9. The probe TO-CAN as recited in claim 1, wherein the probe chip (303) is disposed on the second end face (3022), and a light receiving surface of the probe chip (303) is disposed on a center of the TO base (301), specifically comprising:

an alignment mark (3023) is provided on the second end face (3022), and the alignment mark (3023) is used for positioning the position of the probe chip (303) so that the light receiving surface of the probe chip (303) on the second end face (3022) is arranged on the center of the TO base (301).

10. A probe assembly characterized by comprising a probe TO-CAN (51) according TO any one of claims 1 TO 9 and an adapter (52);

the detector TO-CAN (51) is coupled with the adapter (52);

the probe TO-CAN (51) comprises:

the device comprises a TO base (301), a cushion block (302) and a detector chip (303);

the cushion block (302) comprises a first end face (3021) and a second end face (3022) which are oppositely arranged, and a plane where the first end face (3021) is located is intersected with a plane where the second end face (3022) is located;

the first end face (3021) is provided on the TO base (301);

the detector chip (303) is arranged on the second end face (3022), and a light receiving face of the detector chip (303) is arranged on the center of the TO base (301).

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