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

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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:Al 2O3 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.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Int Soc for Optical Engineering
Number of pages8
ISBN (Print)0819407143, 9780819407146
StatePublished - Jan 1 1991
Externally publishedYes
EventIntegrated Optical Circuits - Boston, MA, USA
Duration: Sep 3 1991Sep 4 1991

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherIntegrated Optical Circuits
CityBoston, MA, USA

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


Dive into the research topics of 'Ten-channel single-mode wavelength division demultiplexer in near IR'. Together they form a unique fingerprint.

Cite this