A phase-sensitive optical time domain reflectometry sensing system based on Ultra-weak FBG Array using double pulses is proposed. The principle of this sensing system is elaborated. A series of simulations are carried out to optimize the parameters to increase the sensing distance of this system. The parameters contain reflectivity of UWFBG the interval between adjacent UWFBGs and pulse width. The optimal reflectivity and pulse width corresponding to different grating space are found out to achieve a longer sensing distance.
|Title of host publication||ICOCN 2017 - 16th International Conference on Optical Communications and Networks|
|Number of pages||3|
|Publication status||E-pub ahead of print - 1 Dec 2017|
|Event||16th International Conference on Optical Communications and Networks, ICOCN 2017 - Wuzhen, China|
Duration: 7 Aug 2017 → 10 Aug 2017
|Conference||16th International Conference on Optical Communications and Networks, ICOCN 2017|
|Period||7/08/17 → 10/08/17|
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Funding: National Natural Science Foundation of China under Grant No. 61627816, 61540017, 61405090 and 61307096, and the Fundamental Research Funds for the Central Universities under Grant No. 021314380087.
- Phase-sensitive OTDR
- Signal-to-Noise Ratio
- Ultra-weak FBG Array