1 December 1991 Ten-channel single-mode wavelength division demultiplexer in near IR
Author Affiliations +
Proceedings Volume 1583, Integrated Optical Circuits; (1991) https://doi.org/10.1117/12.50883
Event: OE Fiber, 1991, Boston, MA, United States
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.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ray T. Chen, Huey T. Lu, Daniel P. Robinson, Michael R. Wang, "Ten-channel single-mode wavelength division demultiplexer in near IR", Proc. SPIE 1583, Integrated Optical Circuits, (1 December 1991); doi: 10.1117/12.50883; https://doi.org/10.1117/12.50883

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