Title :
A High-Performance Ultracompact Optical Interleaver Based on Double-Ring Assisted Mach–Zehnder Interferometer
Author :
Wang, Zhipeng ; Chang, Shih-Jung ; Ni, Chi-Yu ; Chen, Yung Jui
Author_Institution :
Maryland Univ., Baltimore County
fDate :
7/15/2007 12:00:00 AM
Abstract :
We present an ultracompact and high-performance optical interleaver based on a microring assisted Mach-Zehnder interferometer using an ultrahigh-index-contrast waveguide (17% Delta). The device, a 100/200-GHz interleaver at 1.55-mum region, exhibits flat and nearly square passband and better than -30-dB stopband extinction ratio. Fiber-to-fiber loss is -2.2 dB. Passband bandwidth is 90 and 121 GHz at -1 and -20 dB, respectively. The dimension of this interleaver chip is 12times1 mm. Design optimization is also discussed for further performance improvement.
Keywords :
Mach-Zehnder interferometers; micro-optics; optical communication equipment; optical design techniques; optical fibre communication; optical fibre couplers; optical fibre losses; double-ring assisted Mach-Zehnder interferometer; fiber-to-fiber loss; frequency 100 GHz; frequency 200 GHz; high-performance ultracompact optical interleaver; interleaver chip; loss 2.2 dB; microring assisted Mach-Zehnder interferometer; passband bandwidth; stopband extinction ratio; ultrahigh-index-contrast waveguide; wavelength 1.55 mum; Circuits; Extinction ratio; Optical devices; Optical filters; Optical interferometry; Optical losses; Optical resonators; Optical ring resonators; Optical waveguides; Passband; Integrated optics devices; microring resonators; optical interleaver; planar lightwave circuit (PLC);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.899815
