Four-channel integrated-optic wavelength demultiplexer with weak polarization dependence

Author

Vellekoop, Ajen R. ; Smit, Meint K.

Author_Institution

Dept. of Electr. Eng., Delft Univ. of Technol., Netherlands

Volume

9

Issue

3

fYear

1991

fDate

3/1/1991 12:00:00 AM

Firstpage

310

Lastpage

314

Abstract

A planar four-channel wavelength demultiplexer with weak polarization dependence is proposed and demonstrated. This demultiplexer is based on an optical-phased array. An experimental device with dimensions 4.5×3.2 mm² was designed and fabricated, using conventional (high-quality) optical lithography. The demultiplexer operates in the wavelength range 776.5-781.2 nm, with a channel spacing of 1.55 nm. Insertion loss was 0.6 dB for the central channels and 1.2 dB for the outer channels for transverse-electric (TE) polarization, excluding 1.3-dB waveguide propagation loss. Crosstalk values measured 15.4-29.7 dB for the TE and 13.4-22.2 dB for the transverse-magnetic (TM) polarization

Keywords

integrated optics; light polarisation; multiplexing equipment; optical communication equipment; optical losses; 0.6 dB; 1.2 dB; 776.5 to 781.2 nm; TE polarisation; TM polarisation; central channels; channel spacing; crosstalk values; demultiplexer fabrication; insertion loss; integrated-optic wavelength demultiplexer; optical lithography; optical-phased array; outer channels; planar four-channel wavelength demultiplexer; waveguide propagation loss; weak polarization dependence; Channel spacing; Lithography; Optical arrays; Optical crosstalk; Optical design; Optical devices; Optical polarization; Optical waveguides; Propagation losses; Tellurium;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.70004

Filename

70004