Optimization of Mechanically Induced Long-Period Fibre Grating Transmission Spectrum
WANG Xin-Wei 1,2, LI Zhi-Lei 3, SHENG Qiu-Qin1
1Institute of Physics, Nankai University, Tianjin 3000712Institute of Semiconductors, Chinese Academy of Sciences, Beijing 1000833Key Laboratory of Optoelectronic Information Technical Science, Institute of Modern Optics, Nankai University, Tianjin 300071
Optimization of Mechanically Induced Long-Period Fibre Grating Transmission Spectrum
WANG Xin-Wei 1,2;LI Zhi-Lei 3;SHENG Qiu-Qin1
1Institute of Physics, Nankai University, Tianjin 3000712Institute of Semiconductors, Chinese Academy of Sciences, Beijing 1000833Key Laboratory of Optoelectronic Information Technical Science, Institute of Modern Optics, Nankai University, Tianjin 300071
摘要A new double-layer grating template is designed to reduce the out-of-band loss as much as 1.8dB when the loss of LP03 reaches 10.2dB. Meanwhile, we propose a method to remove the sidelobes in the transmission spectra by the adjustment of the thickness of pressure plates. The plate-thickness-induced shift of resonant wavelength and the attenuation of loss peak intensity when removing sidelobes can be modified by the fibre distance and contact point on the pressure plates.
Abstract：A new double-layer grating template is designed to reduce the out-of-band loss as much as 1.8dB when the loss of LP03 reaches 10.2dB. Meanwhile, we propose a method to remove the sidelobes in the transmission spectra by the adjustment of the thickness of pressure plates. The plate-thickness-induced shift of resonant wavelength and the attenuation of loss peak intensity when removing sidelobes can be modified by the fibre distance and contact point on the pressure plates.
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2007, Vol. 24 
