Title :
A novel hybrid coupler based on antiresonant reflecting optical waveguides
Author :
Deng, Jau-Jan ; Huang, Yang-Tung
Author_Institution :
Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
6/1/1998 12:00:00 AM
Abstract :
A novel hybrid coupler based on the antiresonant reflecting optical waveguides (ARROWs) is presented. This device consists of two parallel antiresonant reflecting optical waveguides with a tapered outermost cladding layer. Such a device can provide advantageous features of low radiation loss, low crosstalk at the output end, and compatible core dimensions and indexes with single-mode optical fibers. The staircase approximation and the eigenmode expansion analysis are used to analyze and optimize this device. In our design on a Si-substrate, radiation losses below 0.38 dB and extinction ratios below -20 dB for two waveguide channels are achieved. The beam propagation method (BPM) is also used to verify our design and analysis results
Keywords :
integrated optics; optical couplers; optical crosstalk; optical design techniques; optical losses; optical waveguides; 0.38 dB; ARROW; Si; Si-substrate; antiresonant reflecting optical waveguides; beam propagation method; extinction ratios; hybrid coupler; low crosstalk; low radiation loss; single-mode optical fibers; staircase approximation; tapered outermost cladding layer; waveguide channels; Integrated optics; Optical beams; Optical coupling; Optical crosstalk; Optical devices; Optical fiber couplers; Optical fibers; Optical propagation; Optical signal processing; Optical waveguides;
Journal_Title :
Lightwave Technology, Journal of
