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Proceedings Paper

Ten-channel single-mode wavelength division demultiplexer in near IR
Author(s): Ray T. Chen; Huey T. Lu; Daniel P. Robinson; Michael R. Wang
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Paper Abstract

A ten-channel single-mode wavelength division demultiplexer operating at 740, 750, 760, 770, 780, 790,800,810,820 and 830 nm with diffraction angles varying from 16° to 52° and using a graded index (GRIN) polymer waveguide is reported for the first time. Diffraction efficiency up to 60% was measured. The wavelength spreading of the Ti:Al2O3 laser (~ 4 nm, 3 dB bandwidth) causes an average crosstalk figure of -21 dB. The beamwidth of the diffracted signal as a function of the input beam width, the grating interaction length, and the diffraction angle are considered. Occurrence of maximum values are discussed. A waveguide lens is needed to efficiently couple the diffracted light into an output fiber whenever the diffracted beam size is beyond the core diameter of the fiber involved.

Paper Details

Date Published: 1 December 1991
PDF: 8 pages
Proc. SPIE 1583, Integrated Optical Circuits, (1 December 1991); doi: 10.1117/12.50883
Show Author Affiliations
Ray T. Chen, Physical Optics Corp. (United States)
Huey T. Lu, Physical Optics Corp. (United States)
Daniel P. Robinson, Physical Optics Corp. (United States)
Michael R. Wang, Physical Optics Corp. (United States)


Published in SPIE Proceedings Vol. 1583:
Integrated Optical Circuits
Ka Kha Wong, Editor(s)

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