Eight-channel flat spectral response arrayed-waveguide multiplexer with asymmetrical Mach-Zehnder filters

Author

Okamoto, K. ; Takiguchi, K. ; Ohmori, Y.

Author_Institution

NTT Opto-Electron. Labs., Ibaraki, Japan

Volume

8

Issue

3

fYear

1996

fDate

3/1/1996 12:00:00 AM

Firstpage

373

Lastpage

374

Abstract

An eight-channel flat spectral response arrayed-waveguide grating (AWG) multiplexer with asymmetrical Mach-Zehnder filters has been fabricated on the planar lightwave circuit (PLC). The monotonic spectral loss characteristics of AWG have been canceled by the opposite spectral response in the asymmetric MZ filter. The 1.5 dB bandwidth of 141 GHz and 3 dB bandwidth of 159 GHz are obtained for the 200 GHz channel spacing. The 1.5 dB bandwidth becomes 1.8 times wider than that of the conventional AWG. Crosstalks to neighboring and all other channels are less than -24 dB and the on-chip insertion losses range from 7.0 to 7.4 dB, respectively.

Keywords

Mach-Zehnder interferometers; diffraction gratings; interference filters; multiplexing equipment; optical communication equipment; optical crosstalk; optical losses; optical planar waveguides; optical waveguide components; wavelength division multiplexing; 141 GHz; 159 GHz; 7.0 to 7.4 dB; AWG multiplexer; arrayed-waveguide grating multiplexer; asymmetrical Mach-Zehnder filters; crosstalks; eight-channel flat spectral response arrayed-waveguide multiplexer; monotonic spectral loss characteristics; on-chip insertion losses; opposite spectral response; optical WDM networks; planar lightwave circuit; Arrayed waveguide gratings; Bandwidth; Channel spacing; Circuits; Crosstalk; Filters; Insertion loss; Multiplexing; Optical arrays; Programmable control;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.481121

Filename

481121