Characteristics of frequency noise in a fiber laser sensor array

A wavelength division multiplexed linear fiber laser sensor array system using four distributed feedback fiber lasers (DFB FLs)is reported. The characteristics of frequency noise are investigated experimentally. Results show the interaction between neighboring (in wavelength space) fiber lasers spaced ~2.4nm is so weak that the influence of crosstalk could be omitted. With optimization of pump sequence, all the fiber laser sensors would reach the system minimum detectable frequency noise. A further discussion about the influence of transmission fiber is also included.

[1]  Zunqi Lin,et al.  Stress-induced single polarization DFB fiber lasers , 2002 .

[2]  David N. Payne,et al.  Single polarisation twisted distributed feedback fibre laser , 1996 .

[3]  H. Kogelnik,et al.  Coupled‐Wave Theory of Distributed Feedback Lasers , 1972 .

[4]  Liu Li-hui,et al.  Characteristic Mode Analysis of Distributed Feedback Fiber Lasers , 2007 .

[5]  Yuliang Liu,et al.  Crosstalk Analysis of a Fiber Laser Sensor Array System Based on Digital Phase-Generated Carrier Scheme , 2008, Journal of Lightwave Technology.

[6]  S. Foster,et al.  DFB FL Sensor Cross-Coupling Reduction , 2007, Journal of Lightwave Technology.

[7]  G. Edvell,et al.  A 16 channel fibre laser sensor array , 2006, ACOFT/AOS 2006 - Australian Conference on Optical Fibre Technology/Australian Optical Society.

[8]  G. A. Cranch,et al.  Distributed Feedback Fiber Laser Strain Sensors , 2008, IEEE Sensors Journal.

[9]  Alexei Tikhomirov,et al.  A fiber laser hydrophone , 2005, International Conference on Optical Fibre Sensors.