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High-capacity parallel fiber bragg grating sensing analyzer

A fiber grating and large-capacity technology, which is applied in the direction of transmitting sensing components with optical devices, can solve the problems of small number of channels, small dynamic input range of optical power, and channel asynchrony, etc., to achieve high optical power and small drift caused by temperature , the effect of large dynamic range

Active Publication Date: 2012-04-18
上海汉昆光电科技有限公司
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Problems solved by technology

[0012] The purpose of the present invention is to provide a large-capacity parallel fiber grating sensor analyzer to solve the problems in the prior art that the optical power dynamic input range of the fiber grating sensor analyzer is small, the number of channels is small, and the channels are not synchronized

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  • High-capacity parallel fiber bragg grating sensing analyzer
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  • High-capacity parallel fiber bragg grating sensing analyzer

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Embodiment Construction

[0061] In order to facilitate understanding, some proper nouns appearing in the instructions are explained:

[0062] High-power laser light source: It is a light source device that outputs spectra within a certain wavelength range. It integrates optical fiber amplifiers, flatness suppressors, automatic power adjustment and automatic temperature adjustment modules. It has high power, high quality, high stability, Small size, low power consumption, easy to use, etc. Compared with the traditional ASE light source technology, the output light power of the light source is as high as 85%, the output power of the light source is increased by more than 100 times, the power consumption is reduced by 50%, and the light source is used effectively Life expectancy increased by more than 10 years.

[0063] Optical fiber tunable filter: It is an optical filter based on the principle of optical fiber method-Pernician cavity. It has the characteristics of small size, high stability and high sc...

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Abstract

The invention discloses a high-capacity parallel fiber bragg grating sensing analyzer. The sensing analyzer comprises a wavelength standard tool, an optical branching box module and an adaptive multi-channel parallel photoelectric conversion module. The optical branching box module is provided with an output port which is used for connecting the wavelength standard tool, a first bidirectional port, a second bidirectional port, ..., and an nth bidirectional port which are parallel to one another and used for connecting a fiber bragg grating sensor, and a first output port, a second output port, ..., and an nth output port which are used for connecting the adaptive multi-channel parallel photoelectric conversion module. The adaptive multi-channel parallel photoelectric conversion module is provided with n+1 optical signal input ports and n+1 electric signal output ports. An output port of the optical branching box module is connected with the input end of the wavelength standard tool. The output end of the wavelength standard tool, and the first output port, the second output port, ..., and the nth output port of the optical branching box module are respectively connected with the n+1 optical signal input ports of the adaptive multi-channel parallel photoelectric conversion module correspondingly one by one.

Description

technical field [0001] The invention relates to the technical field of optical fiber grating sensing, in particular to a large-capacity parallel optical fiber grating sensing analyzer. [0002] Background technique [0003] Fiber Bragg grating uses the photosensitivity of the fiber material to write the incident light coherent field pattern into the fiber core by ultraviolet light irradiation, and produces a periodic change in the refractive index along the fiber core axis in the fiber core, thereby forming a permanent space. Phase grating, its function is essentially to form a narrow-band (transmission or reflection) filter or mirror in the fiber core. When a beam of wide-spectrum light passes through an FBG, the wavelength satisfying the FBG Bragg condition will be reflected, and the remaining wavelengths will continue to transmit through the FBG. The wavelength of the reflected light is determined by the effective refractive index of the FBG and the change period of the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/353
Inventor 杨海根张荣贵袁斌
Owner 上海汉昆光电科技有限公司
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