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CTD sensing array based on micro-nano optical fiber coupler SAGNAC ring

A micro-nano optical fiber and sensing array technology, applied in the field of optical fiber sensing, can solve the problems of simultaneous sensing of three parameters of temperature, salt and depth, etc., which is beneficial to practical development, good technical reserves, simplified packaging and structural design. Effect

Active Publication Date: 2020-03-17
NAT UNIV OF DEFENSE TECH
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  • Application Information

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Problems solved by technology

These array systems have never realized the simultaneous sensing of three parameters of temperature, salt and depth.

Method used

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  • CTD sensing array based on micro-nano optical fiber coupler SAGNAC ring
  • CTD sensing array based on micro-nano optical fiber coupler SAGNAC ring
  • CTD sensing array based on micro-nano optical fiber coupler SAGNAC ring

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Embodiment Construction

[0044] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0045] Such as figure 1 As shown, the embodiment of the CTD sensor array based on the SAGNAC ring of the micro-nano fiber coupler of the present invention includes a tunable wavelength scanning light source 11, a tunable optical switch 12, n optical circulators (comprising No. 1 optical circulator 13 , No. 2 optical circulator 14, ..., No. n-1 optical circulator 15), n-1 CTD sensors based on micro-nano fiber coupler SAGNAC ring (referred to as: MCSL-CTD sensor) (including No. 1 MCSL-CTD Sensor 16, No. 2 MCSL-CTD sensor 17, ..., n-1 No. MCSL-CTD sensor 18), FBG temperature sensor 19, beam combiner 110, photodetector 111, data acquisition card 112, signal processing computer 113 and CT Electrical sensor 114 .

[0046] The tunable wavelength-scanning light source 11 is composed of a wide-spectrum light source and a high-precision tunable F-P ...

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Abstract

The invention aims at the requirements of integrated monitoring application of seawater temperature salinity and depth, overcomes the defects of various existing temperature, salinity and depth sensors, and provides a CTD sensing array based on a micro-nano optical fiber coupler SAGNAC ring. The CTD sensing array is composed of a tunable wavelength scanning light source, a tunable optical switch,n optical circulators, n-1 CTD sensors based on the micro-nano optical fiber coupler SAGNAC ring, an FBG temperature sensor, a beam combiner, a photoelectric detector, a data acquisition card, a signal processing computer and a CT electrical sensor. Multi-sensing-probe space division multiplexing cascading is achieved through the tunable optical switch, then temperature, salinity and depth integrated signal demodulation processing is achieved through the high-precision tunable light source and the array has the characteristics of being compact in structure, high in modular integration degree,high in data compatibility, low in cost, high in sensitivity and the like.

Description

technical field [0001] The invention relates to the technical field of marine environment monitoring and optical fiber sensing, in particular to a CTD sensing array based on a microfiber coupler combined Sagnac loop (microfiber coupler combined Sagnac loop, MCSL). Background technique [0002] The parameters of various elements of the marine environment directly affect marine-related activities such as marine economic development, marine environmental protection, marine equipment and equipment operation efficiency and safety, and real-time, efficient, rapid, in-situ, large-scale, and continuous monitoring of various marine environmental elements is an important It is a arduous and complicated task, and it is also a necessary ability to develop and manage the ocean. Therefore, the development of marine environmental monitoring technology and the development of related equipment and instruments are the only way to build a marine power. The related work is of great significance...

Claims

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Application Information

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IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 于洋曹亮张振福周灵钧杨俊波张振荣孟洲
Owner NAT UNIV OF DEFENSE TECH
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