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

Volume

19

Issue

14

fYear

2007

fDate

7/15/2007 12:00:00 AM

Firstpage

1072

Lastpage

1074

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);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2007.899815

Filename

4252146