Chinese Optics Letters, Vol. 4, Issue 7, 393 (2006)
Polarization-dependent characteristics of a racetrack waveguide resonator fabricated by ion exchange in K9 glass
Xiuyou Han1,2,*, Feng Liu1,2, Fufei Pang1,2, Fenghong Chu1,2, Haiwen Cai1, Ronghui Qu1, and Zujie Fang1
- 1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
- 2Graduate School of the Chinese Academy of Sciences, Beijing 100039
A racetrack waveguide resonator filter was fabricated by ion exchange technology in K9 optical glass. The filter responses of the waveguide resonator were measured with two polarized input lightwaves. The polarization-dependent characteristics of the waveguide resonator were analyzed, and the results of effective indices of n_(TE)=1.5721 and n_(TM)=1.5548, coupling ratios of r_(TE)=0.731 and r_(TM)=0.761, and losses of 'alpha'_(TE)=4.35 dB/cm and 'alpha'_(TM)=6.05 dB/cm were obtained for transverse electric (TE) and transverse magnetic (TM) modes, respectively. The causes of large loss and effective index differences between TE and TM modes were discussed.
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