Fabrication of optical filters based on polymer asymmetric Bragg couplers.
In this work, we successfully developed a process to fabricate dual-channel polymeric waveguide filters based on an asymmetric Bragg coupler (ABC) using holographic interference techniques, soft lithography, and micro molding. At the cross- and self-reflection Bragg wavelengths, the transmission dips of approximately -16.4 and -11.5 dB relative to the 3 dB background insertion loss and the 3 dB transmission bandwidths of approximately 0.6 and 0.5 nm were obtained from an ABC-based filter. The transmission spectrum overlaps when the effective index difference between two single waveguides is less than 0.002.
Chuang
Wei-Ching
WC
Department of Electro-Optics Engineering, National Formosa University, Huwei, Yulin, Taiwan.
Lee
An-Chen
AC
Chao
Ching-Kong
CK
Ho
Chi-Ting
CT
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005374:Filtration / Q000295:instrumentation*; D008027:Light; D055096:Optical Devices; D011108:Polymers / Q000737:chemistry*; D012031:Refractometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
D011108:Polymers