Title :
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
fDate :
3/1/1991 12:00:00 AM
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;
Journal_Title :
Lightwave Technology, Journal of
