%0 Journal Article
%T A wide tuning range electro-optic filter based on long-period waveguide grating
%A XiaoWei Guo
%A XiaoXia Zhang
%A HePing Li
%A Yong Liu
%A YongZhi Liu
%J Chinese Science Bulletin
%@ 1861-9541
%D 2010
%I 
%R 10.1007/s11434-009-0359-0
%X We present the design of an electro-optic filter with polarization insensitivity based on a long period waveguide grating. The filter exhibits an ultra-large wavelength tuning range of exceeding 35 nm and covering the whole C band (1530 to 1565 nm) in a bias voltage range from  84 to 84 V. In the whole tuning range, the transmission coefficients for quasi TE modes are over 97% and the 3 dB bandwidths are below 0.8 nm. The wavelength sensitivity to the tunable voltage is about 0.208 nm/V. This electro-optic filter can be used in dynamic WDM networks for fast wavelength scanning/selection, communication channel reconfiguration, and optical switching.
%K optical filter
%K long-period waveguide grating
%K electro-optic tuning
%K polarization insensitivity
%U http://link.springer.com/article/10.1007/s11434-009-0359-0