Ten-channel single-mode wavelength division demultiplexer in near IR

Ray T. Chen; Huey T. Lu; Daniel P. Robinson; Michael R. Wang

doi:10.1117/12.50883

1 December 1991 Ten-channel single-mode wavelength division demultiplexer in near IR

Ray T. Chen, Huey T. Lu, Daniel P. Robinson, Michael R. Wang

Proceedings Volume 1583, Integrated Optical Circuits; (1991) https://doi.org/10.1117/12.50883
Event: OE Fiber, 1991, Boston, MA, United States

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.

Citation Download Citation

Ray T. Chen, Huey T. Lu, Daniel P. Robinson, and Michael R. Wang "Ten-channel single-mode wavelength division demultiplexer in near IR", Proc. SPIE 1583, Integrated Optical Circuits, (1 December 1991); https://doi.org/10.1117/12.50883

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