11 March 2016 Planar concave grating wavelength demultiplexers with flattened spectral response based on SU-8 polymer waveguides
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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.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Guomin Jiang, Guomin Jiang, Sarfaraz Ali Baig, Sarfaraz Ali Baig, Hui Lu, Hui Lu, Kai Shen, Kai Shen, Michael R. Wang, Michael R. Wang, } "Planar concave grating wavelength demultiplexers with flattened spectral response based on SU-8 polymer waveguides," Optical Engineering 55(3), 037104 (11 March 2016). https://doi.org/10.1117/1.OE.55.3.037104 . Submission:
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