C-band four-channel CWDM (de-)multiplexers on a thin film lithium niobate-silicon rich nitride hybrid platform
Author(s): Liu, Yang; Huang, Xingrui; Guan, Huan; Yu, Zhiguo; Wei, Qingquan; Fan, Zhongchao; Han, Weihua; Li, Zhiyong
Source:OPTICS LETTERS Volume:46 Issue:19 Page:4726 - 4729 DOI:10.1364/OL.437681 Published:OCT 1 2021
Abstract: A four-channel coarse wavelength division multiplexing (CWDM) (de)multiplexer on a thin film lithium niobate-silicon rich nitride hybrid platform has been designed, fabricated, and experimentally measured. Enabled by cascaded multimode waveguide Bragg gratings, the (de)multiplexer has a box-like spectral response, wide 1-dB bandwidth (10 nm), low excess loss (< 1.08 dB), and low channel cross talk (<-18 dB). The central wavelengths of the (de-)multiplexer are 1531/1551/1571/1591 nm, which align to the wavelength grids stipulated by the standard ITU-T G.694.2. (C) 2021 Optical Society of America
Accession Number:WOS:000702746400005
ISSN: 0146-9592
eISSN: 1539-4794
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