Stabilization technique of optic fiber delay lines for photonic sensing

Chun Xiao; Jun-jiang Ren; Wen-jie Wei; Cheng-lin Xu; Jian-ping Huang

doi:10.1117/12.2199073

8 October 2015 Stabilization technique of optic fiber delay lines for photonic sensing

Chun Xiao, Jun-jiang Ren, Wen-jie Wei, Cheng-lin Xu, Jian-ping Huang

Proceedings Volume 9679, AOPC 2015: Optical Fiber Sensors and Applications; 96790B (2015) https://doi.org/10.1117/12.2199073
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

Abstract

In this contribution, optic fibers of a serial of doping proportions were prepared and tested. It’s found that B could decrease the sensitivity of refractive index to the temperature, and the sensitivity decreased 2% as the B’s molar percentage increased 1%. By comparing fiber samples’ test results, the proportion of Si: B: Ge to achieve the lowest Δn/ΔT was 0.75: 0.15: 0.1. After balancing the Δn/ΔT and loss, the recommended proportion of Si: B: Ge was given as 0.77: 0.15: 0.08. With this method, the optic fiber delay lines’ time delay could be reduced to 30 ps/km/°C, and their loss is lower than 0.5dB/km at 1550nm wavelength. Besides B and Ge, other kinds of elements are now being used to add into the fiber to improve the property of delay, and decay lines will make the photonic sensing more reliable and stable.

Citation Download Citation

Chun Xiao, Jun-jiang Ren, Wen-jie Wei, Cheng-lin Xu, and Jian-ping Huang "Stabilization technique of optic fiber delay lines for photonic sensing", Proc. SPIE 9679, AOPC 2015: Optical Fiber Sensors and Applications, 96790B (8 October 2015); https://doi.org/10.1117/12.2199073

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KEYWORDS

Germanium

Photodetectors

Phased array optics

Refractive index

Silicon

Doping

Oxygen

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