Chinese Optics Letters, 2016, 14 (8): 081301, Published Online: Aug. 3, 2018
Design of an ultra-broadband and fabrication-tolerant silicon polarization rotator splitter with SiO2 top cladding
Abstract
An ultra-broadband and fabrication-tolerant silicon polarization rotator splitter is proposed in this Letter. Benefitting from the broadband and low-loss characteristics of the bi-level taper and counter-tapered coupler, the designed device has a simulated insertion loss and crosstalk of less than 0.2 and 15 dB in the waveband from 1290 to 1610 nm. These characteristics make it valuable in applications with large bandwidth requirements, such as full-grid Coarse wavelength division multiplexer (CWDM) and diplexer/triplexer fiber-to-the-home systems. The fabrication tolerance of the design is also analyzed, showing that the device performance is quite stable with normal manufacturing errors in silicon photonics foundries.
Xin Chen, Chao Qiu, Zhen Sheng, Aimin Wu, Haiyang Huang, Yingxuan Zhao, Wei Li, Xi Wang, Shichang Zou, Fuwan Gan. Design of an ultra-broadband and fabrication-tolerant silicon polarization rotator splitter with SiO2 top cladding[J]. Chinese Optics Letters, 2016, 14(8): 081301.