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Wavelength-tunable photoelectric detector, optical wavelength detection system and method thereof

A photodetector and optical wavelength technology, applied in the field of optical wavelength detection, can solve the problems of large volume, low integration and high cost

Active Publication Date: 2012-08-29
GUANGDONG FUAN TECH DEV +1
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Problems solved by technology

The currently used methods have disadvantages such as high cost, large volume, and low integration, which greatly restrict the development and application of fiber grating sensing technology.

Method used

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  • Wavelength-tunable photoelectric detector, optical wavelength detection system and method thereof
  • Wavelength-tunable photoelectric detector, optical wavelength detection system and method thereof
  • Wavelength-tunable photoelectric detector, optical wavelength detection system and method thereof

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Embodiment Construction

[0028] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] Such as figure 2 Shown is a structural schematic diagram of a wavelength tunable photodetector according to an embodiment of the present invention, including: a semiconductor substrate F-P (Fabry-Pérot) cavity narrowband filter and a p-i-n photodetector bonded thereto, a semiconductor substrate The F-P cavity narrow-band filter is used to irradiate the received optical signal to be measured through the transmitted optical signal of the F-P filter cavity to the absorption layer of the p-i-n photodetector. The F-P filter cavity uses the thermo-optic effect of the semiconductor matrix material to change the temperature of the F-P filter cavity by applying a tuning vo...

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Abstract

The invention discloses a wavelength-tunable photoelectric detector, which comprises a semiconductor substrate F-P (Fabry-Perot) cavity narrow-band filer and a p-i-n photoelectric detector bonded with the semiconductor substrate F-P cavity narrow-band filter. The invention also discloses an optical wavelength detection system based on the wavelength-tunable photoelectric detector. The system comprises an F-P smoothing cavity tuning control module, an optical wavelength regulating module, a photoelectric detector output current detection module and the wavelength-tunable photoelectric detector. The invention also discloses a method for detecting the optical wavelength by the system. According to the invention, the optical wavelength detection system and the method thereof with the advantages of low cost, high integration, small size and portability are realized.

Description

technical field [0001] The invention relates to the technical field of optical wavelength detection, in particular to a wavelength tunable photoelectric detector, an optical wavelength detection system and a method. Background technique [0002] Optical sensing, especially optical sensing based on fiber grating technology, is currently used in civil construction, petroleum, electric power, transportation, mining, medicine, etc. It has been widely used in many fields. The filter detection fiber grating sensing system structure is as follows: figure 1 As shown, it is generally composed of a broadband light source, a fiber grating sensor, an optical wavelength detector, and passive optical devices. Among them, the broadband optical signal sent by the light source is coupled by a passive optical device such as a coupler and transmitted to the fiber Bragg grating sensor through an optical fiber. The reflected light wavelength of the grating can then realize the measurement of ...

Claims

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Application Information

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IPC IPC(8): G01J9/00
Inventor 张治国陈雪张民王立芊
Owner GUANGDONG FUAN TECH DEV
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