Light detection module and light module

Patent metadata

Field	Value
Publication number	US-2017085970-A1
Application number	US-201615085401-A
Country	US
Kind code	A1
Filing date	Mar 30, 2016
Priority date	Sep 23, 2015
Publication date	Mar 23, 2017
Grant date	—

Abstract

A light detection module includes: a TO base and a TO cap; wherein the TO base is fixedly provided thereon with a first optical sensor, a support frame and a support base; the support frame is fixedly provided thereon with a beam splitter, and the beam splitter and the first optical sensor are at an angle of 45 degrees; an upper surface of the support base is fixedly provided thereon with an optical resonator and a second optical sensor, the optical resonator is located between the beam splitter and the second optical sensor, and the optical resonator, the second optical sensor and the beam splitter are on a straight line parallel to a surface of the TO base; and the TO cap is provided thereon with an opening, and the opening, the first optical sensor and the beam splitter are on a straight line perpendicular to the surface of the TO base.

First claim

1 . A light detection device, comprising:
a beam splitter configured to split an incident light beam into a first light beam and a second light beam; a first optical sensor located on a first light path of the first light beam to receive the first light bream; a second optical sensor located on a second light path of the second light beam to receive the second light beam; and an optical resonator in the second light path between the splitter and the second optical sensor.

2 . The light detection device according to claim 1 , further comprising:
a support base; a support frame on one side of the support base, wherein the beam splitter is located on the support frame at a preset angle with respect to an upper surface of the support base.

3 . The light detection module according to claim 2 , wherein
the support frame and the beam splitter form a cavity; and the first optical sensor is located in the cavity.

4 . The light detection device according to claim 3 , wherein further comprising:
a optical sensor substrate on the support base; and the second optical sensor is located on a vertical plane of the optical sensor substrate; wherein the vertical plane of the optical sensor substrate is a plane where the optical sensor substrate is perpendicular to the support base, and the vertical plane is close to the optical resonator.

5 . The light detection module according to claim 2 , further comprising:
a Transistor-Outline (TO) base; and a pin on the TO base, wherein the support base and the first optical sensor are on the TO base.

6 . The light detection device according to claim 5 , further comprising a semiconductor cooler TEC on the TO base,
wherein the first optical sensor and the support base are located on the cooler TEC.

7 . The light detection device according to claim 6 , further comprising a temperature controller on an upper surface of the support base.

8 . The light detection device according to claim 5 , further comprising a TO cap connected to the TO base and over the beam splitter,
wherein the TO cap includes an opening thereon in a light path of the incident light.

9 . The light detection device according to claim 1 , wherein
the first optical sensor is a monitor photodiode MPD or a photoresistor; the second optical sensor is a monitor photodiode MPD or a photoresistor; and the optical resonator is a Fabry-Perot resonator (F-P resonator).

10 . The light detection device according to claim 1 , further include a light module to:
generate the incident light and send the incident light to the splitter; receive an input reflecting a difference between a first current from the first optical sensor and a second current from the second optical sensor; and adjust wavelength of the incident light according to the input signal.

11 . A light detection device, comprising:
a Transistor-Outline (TO) base; a first optical sensor on the TO base; a support frame on the TO base; a support base on the TO base; a beam splitter on the support frame and at an angle of 45 degrees with respect to the first optical sensor; a second optical sensor on an upper surface of the support base; an optical resonator on the upper surface of the support base and between the beam splitter and the second optical sensor, wherein the optical resonator, the second optical sensor and the beam splitter are on a straight line parallel to a surface of the TO base; and a TO cap over the TO base, including an opening thereon, wherein the opening, the first optical sensor and the beam splitter are on a straight line perpendicular to the surface of the TO base.

12 . The light detection device according to claim 11 , further comprising a semiconductor cooler TEC on the TO base,
wherein the first optical sensor, the support frame, and the support base are all fixed to an upper surface of the cooler TEC.

13 . The light detection device according to claim 11 , further comprising a temperature controller located on the upper surface of the support base and close to the optical resonator.

14 . The light detection device according to claim 12 , further comprising a temperature controller located on the upper surface of the support base and close to the optical resonator.

15 . The light detection device according to claim 11 , further comprising an optical sensor substrate on the upper surface of the support base, wherein
the second optical sensor is fixed on a vertical plane of the optical sensor substrate, and the vertical plane of the optical sensor substrate is a plane where the optical sensor substrate is perpendicular to the support base, and the vertical plane is close to the optical resonator.

16 . The light detection device according to claim 12 , further comprising an optical sensor substrate on the upper surface of the support base, wherein
the second optical sensor is fixed on a vertical plane of the optical sensor substrate, and the vertical plane of the optical sensor substrate is a plane where the optical sensor substrate is perpendicular to the support base, and the vertical plane is close to the optical resonator.

17 . The light detection device according to claim 14 , further comprising an optical sensor substrate on the upper surface of the support base, wherein
the second optical sensor is fixed on a vertical plane of the optical sensor substrate, and the vertical plane of the optical sensor substrate is a plane where the optical sensor substrate is perpendicular to the support base, and the vertical plane is close to the optical resonator.

18 . The light detection device according to claim 11 , further comprising an optical sensor substrate on the upper surface of the support base, wherein
the second optical sensor is fixed on a vertical plane of the optical sensor substrate, and the vertical plane of the optical sensor substrate is a plane where the optical sensor substrate is perpendicular to the support base, and the vertical plane is close to the optical resonator.

19 . The light detection device according to claim 11 , further comprising at least 7 pins on the TO base is provided thereon with at least 7 pins.

20 . The light detection device according to claim 11 , further include a light module to:
generate the incident light and send the incident light to the splitter; receive an input reflecting a difference between a first current from the first optical sensor and a second current from the second optical sensor; and adjust wavelength of the incident light according to the input signal.

Assignees

• Hisense Broadband Multimedia Technology Co Ltd
• Hisense Usa Corp
• Hisense Int Co Ltd

Inventors

• Zhang Huani

Classifications

• H04J14/02

  Wavelength-division multiplex systems · CPC title

• H04Q11/0005 Primary

  Switch and router aspects · CPC title

• H04Q2011/0011

  using wavelength conversion · CPC title

• H04Q2011/0016

  using wavelength multiplexing or demultiplexing · CPC title

• H04Q2011/0015

  using splitting combining · CPC title