TY - JOUR
T1 - Planar concave grating wavelength demultiplexers with flattened spectral response based on SU-8 polymer waveguides
AU - Jiang, Guomin
AU - Baig, Sarfaraz
AU - Lu, Hui
AU - Shen, Kai
AU - Wang, Michael Renxun
PY - 2016/3/1
Y1 - 2016/3/1
N2 - 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.
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.
KW - gratings
KW - multimode interference coupler
KW - polymer waveguides
KW - SU-8
KW - wavelength division multiplexing
UR - http://www.scopus.com/inward/record.url?scp=84961847716&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84961847716&partnerID=8YFLogxK
U2 - 10.1117/1.OE.55.3.037104
DO - 10.1117/1.OE.55.3.037104
M3 - Article
AN - SCOPUS:84961847716
VL - 55
JO - SPIE J
JF - SPIE J
SN - 0091-3286
IS - 3
M1 - 037104
ER -