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CHENHAO GAO1, BO WANG1,* , CHEN FU1, JIMIN FANG1, KUNHUA WEN1, ZIMING MENG1, ZHAOGANG NIE1, LI CHEN1, LIANG LEI1, JINYUN ZHOU1
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China
We design and optimize dual channel reflection subwavelength grating with good uniformity. Given an incident wavelength of 1550 nm and grating period of 1540 nm, the simplified modal method can be used to obtain the optimized duty cycle and grating groove depth. By using the rigorous couple d wave analysis, grating parameters are analyzed and calculated. For TE and TM polarization, a good splitting ratio can be exhibited with 48.5%/48.4% and 48.1%/48.1%, respectively Previous subwavelength gratings worked only at narrow bandwidth. The design ed dual channel connecting layer based embedded reflective grating can show the wide bandwidth..
Beam splitter, Polarization independence, Reflective efficiency.
Submitted at: Dec. 8, 2018
Accepted at: Aug. 20, 2019
CHENHAO GAO, BO WANG, CHEN FU, JIMIN FANG, KUNHUA WEN, ZIMING MENG, ZHAOGANG NIE, LI CHEN, LIANG LEI, JINYUN ZHOU, Dual channel connecting layer based embedded reflective splitter, Journal of Optoelectronics and Advanced Materials Vol. 21, Iss. 7-8, pp. 429-434 (2019)
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