CN213403030U

CN213403030U - Coaxial packaging light receiving device

Info

Publication number: CN213403030U
Application number: CN202022648638.XU
Authority: CN
Inventors: 高明; 武锐; 涂世军; 黄晓雷
Original assignee: EOPTOLINK TECHNOLOGY Inc
Current assignee: EOPTOLINK TECHNOLOGY Inc
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-06-08
Anticipated expiration: 2030-11-16

Abstract

The utility model discloses a coaxial encapsulation light-receiving device, include base, detector, amplifier and have the encapsulation cap of light path window, the encapsulation cap connect at the base and form the encapsulation space between the two, detector and amplifier electricity be connected and both are fixed to be set up in the encapsulation space, still be provided with the filter plate in the encapsulation space to the fixed light path that sets up between light path window to the detector of filter plate. Coaxial encapsulation light-receiving device fix the filter direct package inside it, improve the integrated level, reduce coaxial encapsulation light-receiving device's the volume that occupies, satisfy the demand of miniaturized development, be favorable to realizing automatic assembly, improve production efficiency, reduction in production cost.

Description

Coaxial packaging light receiving device

Technical Field

The utility model relates to an optical transceiver technical field especially relates to a coaxial packaging light receiving device.

Background

Unlike a typical semiconductor device, which includes an optical component in addition to an electrical component, an optical device has a relatively complex package structure, which is generally composed of several different sub-components. The coaxial package is a typical structure of the light receiving device, in which a detector, a preamplifier and the like are integrated, and is interconnected with the outside through a bonding method. The problem of signal crosstalk can be solved light cluster in light receiving device and filter in addition to the problem of avoiding appearing between light receiving device and the light emitting device usually, be in coaxial encapsulation's outside with filter fixing device among the prior art, need increase extra part and fix the filter, increased light device's size, be difficult to satisfy the demand of miniaturization development, and the filter adopts manual bonding process usually, and production efficiency is low, and manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve and the technical task that provides improve prior art, provide a coaxial packaging light receiving device, solve among the prior art coaxial packaging light receiving device structure unreasonable, occupation space is big, is difficult to satisfy the problem of miniaturized development.

For solving the above technical problem, the technical scheme of the utility model is that:

the utility model provides a coaxial packaging light receiving element, includes base, detector, amplifier and has the encapsulation cap of light path window, the encapsulation cap connect at the base and form the encapsulation space between the two, detector and amplifier electricity be connected and both are fixed to be set up in the encapsulation space, still be provided with the filter in the encapsulation space to the filter is fixed to be set up on the light path between light path window to the detector. Coaxial encapsulation light receiving device with filter and detector, amplifier together direct encapsulation fixed in inside, effectively improve the integrated level, need not to fix the filter again through extra part in coaxial encapsulation light receiving device's outside, effectively reduce coaxial encapsulation light receiving device's the volume that occupies, satisfy the demand of miniaturized development, be favorable to realizing automatic assembly, improve production efficiency, reduction in production cost.

Furthermore, the detector and the amplifier are fixed on the base in an adhesive mode, the assembly mode is simple, the efficiency is high, and automatic assembly is easy to carry out.

Furthermore, the filter plate is fixed on the gasket arranged on the base, and the filter plate is stable in structure, convenient for automatic assembly and capable of improving production efficiency.

Furthermore, partly pass through sticky mode and fix at the gasket of filter, another part of filter is in unsettled state and is located the light path between light path window to the detector, simple structure, and the filter can be reliable carries out filtering to the light signal that gets into from the light path window, and the light signal through filtering is received by the detector again, effectively avoids appearing the situation of signal crosstalk.

Furthermore, the gasket is made of ceramic materials, so that the insulating property and the heat conductivity are good, and the long-acting stable work of the coaxial packaging light receiving device can be guaranteed.

Furthermore, a lens is integrated on the packaging cap to form a light path window, and the lens can play a role in focusing an optical signal entering the coaxial packaging light receiving device, so that the coupling efficiency is improved.

Compared with the prior art, the utility model discloses the advantage lies in:

coaxial encapsulation light-receiving device fix the filter direct package inside it, improve the integrated level, reduce coaxial encapsulation light-receiving device's the volume that occupies, satisfy the demand of miniaturized development, be favorable to realizing automatic assembly, improve production efficiency, reduction in production cost.

Drawings

Fig. 1 is a schematic structural view of a coaxial package light-receiving device.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model discloses a coaxial packaging light receiving device, with the integrated inside at coaxial packaging of filter plate, compact structure, occupation space are little, the automated production of being convenient for improves production efficiency, reduction in production cost.

As shown in fig. 1, a coaxial packaged light receiving device mainly includes a base 1, a detector 3, an amplifier 4 and a packaging cap 2 having a light path window, the packaging cap 2 is connected to the base 1 by a sealing process and a sealed packaging space is formed between the two, the detector 3 is a semiconductor detector, the amplifier 4 is a transimpedance amplifier, the detector 3 and the amplifier 4 are bonded by gold wire, and the detector 3 and the amplifier 4 are disposed in the packaging space, specifically, the detector 3 and the amplifier 4 are respectively fixed on the base 1 by gluing, and the detector 3 faces the light path window of the packaging cap 2, so that the optical signal entering the packaging space from the light path window can be received by the detector 3, in this embodiment, a filter 5 is further disposed in the packaging space, and the filter 5 is fixedly disposed on the light path from the light path window to the detector 3, therefore, the optical signal entering the packaging space from the optical path window is filtered by the filter 5 and then reaches the light receiving surface of the detector 3, the detector 3 converts the optical signal into an electrical signal and transmits the electrical signal to the amplifier 4, and the amplifier 4 amplifies the electrical signal and finally transmits the electrical signal.

In this embodiment, the package cap 2 is integrally provided with a lens 7 to form a light path window, the lens can focus an optical signal entering the coaxial package light receiving device, coupling efficiency is improved, meanwhile, the sealing performance of the package space is ensured, the detector 3 and the amplifier 4 are prevented from being influenced by interference, and detection precision is improved;

and, in this embodiment, filter 5 is fixed on setting up the gasket 6 on base 1, gasket 6 adopts ceramic material, and gasket 6 passes through the adhesive means to be fixed on base 1, and is concrete, filter 5 partly passes through adhesive means to be fixed at gasket 6, another part of filter 5 is in unsettled state and is located the light path between light path window to detector 3 to ensure that filter 5 can long-term stable messenger's optical signal reachs detector 3 after having carried out filtering process on, avoid appearing the problem of signal crosstalk, improve and detect the accuracy.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims

1. The utility model provides a coaxial packaging light receiving element, its characterized in that includes base (1), detector (3), amplifier (4) and encapsulation cap (2) that have the light path window, encapsulation cap (2) connect base (1) and form the encapsulation space between the two, detector (3) and amplifier (4) electricity be connected and both are fixed to be set up in the encapsulation space, still be provided with filter (5) in the encapsulation space to filter (5) are fixed to be set up the light path between light path window to detector (3).

2. The coaxial packaged light receiving device according to claim 1, wherein the probe (3) and the amplifier (4) are fixed to the base (1) by gluing.

3. The coaxial packaged light receiving device according to claim 1, wherein the filter (5) is fixed to a spacer (6) provided on the base (1).

4. A coaxially packaged light receiving device according to claim 3, wherein a part of said filter (5) is fixed to said spacer (6) by gluing and another part of said filter (5) is in a suspended state and is located in the light path between the light path window and the detector (3).

5. The coaxially packaged light receiving device according to claim 3, wherein said spacer (6) is made of ceramic.

6. The coaxially packaged light receiving device according to any one of claims 1 to 5, wherein a lens (7) is integrally provided on the package cap (2) to constitute an optical path window.