Optical Waveguide Tunable Phase Delay Lines Based on the Superior Thermo-Optic Effect of Polymer

Polymers

Min-Cheol Oh¹  Guanghao Huang¹  Sung-Moon Kim¹  Tae-Hyun Park¹ 

[1] Department of Electronics Engineering, Pusan National University, Pusan (Busan) 46241, Korea;

关键词: polymer waveguide;    phase delay line;    thermo-optic effect;    birefringence modulation;   

DOI  :  10.3390/polym10050497

来源: DOAJ

【 摘 要 】

Strong thermo-optic effect of polymers is useful for fabricating tunable phase-delay devices with low power consumption and wide tuning range. However, if the temperature change is increased to extend the tuning range, an attenuation of the guided light is accompanied by the refractive index gradient across the waveguide core. For three different waveguide structures, in this study, the optimal structure of the device for a variable phase delay line was found by investigating the attenuation and interference phenomena accompanying phase modulation. By improving the uniformity of thermal distribution across the waveguide core, a phase delay of 130π rad was obtained with an output attenuation less than 0.5 dB.

【 授权许可】

Unknown