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Proceedings Paper

Research on InP based DBR laser and its application in optical fiber sensing system
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Paper Abstract

At present, the optical fiber sensor generally conducts single parameter characterization, but for the power transmission line monitoring, multi-parameter sensing is needed, such as to monitor the line temperature, humidity, tower tilt, line breeze vibration, and so on. However, to realize multi-parameter sensing, many different sensors and information demodulation devices are needed, which is so expensive that it makes the optical fiber sensor cannot be used in the power industry. In particular, the performance of the equipment is greatly decided by the performance of key devices such as lasers, electro-optical modulators, photodetectors, and spectral demodulation components. So, in our work, the InP-based tunable DBR lasers with narrow linewidth, InP-based electro-absorption modulators (EAM), and monolithically integrated opto-electronic circuits based on InP integration platform are studied to satisfy the requirement for optical fiber sensing system. The distributed Bragg reflector (DBR) laser obtained is within C band, and hop free, and the wavelength tunable range is larger than 15nm with laser linewidth less than 500kHz. And by changing the diode temperature or driving current, the output light wavelength can correspondingly change. For the EAM, the pulse extinction ratio is greater than 10dB, and the rising time is less than 20ps, and the insertion loss is less than 6dB. These devices can be used in distributed optical fiber sensing systems, fiber Bragg grating sensors and tunable diode laser absorption spectroscopy apparatuses, and so on.

Paper Details

Date Published: 6 November 2018
PDF: 7 pages
Proc. SPIE 10812, Semiconductor Lasers and Applications VIII, 108121E (6 November 2018); doi: 10.1117/12.2503195
Show Author Affiliations
Lidong Lu, Global Energy Interconnection Research Institute Co., Ltd. (China)
State Grid Lab. of Electric Power Communication Network Technology (China)
Xiaoyan Sun, State Grid Lab. of Electric Power Communication Network Technology (China)
State Grid Lab. of Electric Power Communication Network Technology (China)
Xiande Bu, Global Energy Interconnection Research Institute Co., Ltd. (China)
State Grid Lab. of Electric Power Communication Network Technology (China)
Jing Tao, Global Energy Interconnection Research Institute Co., Ltd. (China)
State Grid Lab. of Electric Power Communication Network Technology (China)
Binglin Li, Global Energy Interconnection Research Institute Co., Ltd. (China)
State Grid Lab. of Electric Power Communication Network Technology (China)


Published in SPIE Proceedings Vol. 10812:
Semiconductor Lasers and Applications VIII
Ning Hua Zhu; Werner H. Hofmann, Editor(s)

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