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

Guomin Jiang; Sarfaraz Baig; Hui Lu; Kai Shen; Michael Renxun Wang

doi:10.1117/1.OE.55.3.037104

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

Guomin Jiang, Sarfaraz Baig, Hui Lu, Kai Shen, Michael Renxun Wang

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

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.

Original language	English (US)
Article number	037104
Journal	Optical Engineering
Volume	55
Issue number	3
DOIs	https://doi.org/10.1117/1.OE.55.3.037104
State	Published - Mar 1 2016

Keywords

gratings
multimode interference coupler
polymer waveguides
SU-8
wavelength division multiplexing

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering(all)

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title = "Planar concave grating wavelength demultiplexers with flattened spectral response based on SU-8 polymer waveguides",

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.",

keywords = "gratings, multimode interference coupler, polymer waveguides, SU-8, wavelength division multiplexing",

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AU - Jiang, Guomin

AU - Baig, Sarfaraz

AU - Lu, Hui

AU - Shen, Kai

AU - Wang, Michael Renxun

PY - 2016/3/1

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AB - 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.

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