Narrow Bandwidth Fiber Grating
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In order to improve the SNR, a narrow bandwidth filter should be used to reduce the background noise.
The parameters of each element used in the experiment are same to the above values. Agilent Q8347 spectrum analyzer with a resolution of 0.01 nm is used to detect the signal.
parameter specification wavelength 1530-1560nm? 1530-1560nm wave length accuracy <0.1nm reflectivity >70% (5db) 3db?? 3db bandwidth <0.15nm smsr >10db pigtail length 2 meters both ends(or could be customized) optical fiber modle single mode, multimode,or other insertion loss <0.1nm fbg length 25mm
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