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Optical Engineering

Planar concave grating wavelength demultiplexers with flattened spectral response based on SU-8 polymer waveguides
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Paper Abstract

Planar concave grating wavelength demultiplexers with a flattened spectral response are realized based on SU-8 polymer waveguides. The flattened spectral response is accomplished by using an optimized multimode interference (MMI) coupler as the input aperture of the planar waveguide for all spectrally separated channels. The mode field distribution at the input of the planar waveguide is controlled by adjusting the width of the input taper connected to the MMI coupler. The devices are fabricated by cost-effective one-step UV lithography. Experimental results show that the desired flattened spectral response has been realized. The on-chip loss, crosstalk, and nonuniformity of the fabricated device are −14.8, −22, and 2.5 dB, respectively.

Paper Details

Date Published: 11 March 2016
PDF: 6 pages
Opt. Eng. 55(3) 037104 doi: 10.1117/1.OE.55.3.037104
Published in: Optical Engineering Volume 55, Issue 3
Show Author Affiliations
Guomin Jiang, Univ. of Miami (United States)
Sarfaraz Ali Baig, Univ. of Miami (United States)
Hui Lu, Univ. of Miami (United States)
Kai Shen, Univ. of Miami (United States)
Michael R. Wang, Univ. of Miami (United States)

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