Polarization rotator-splitter covering full optical communication bands based on L-shaped cross-sect

• 作 者: 陈代高 肖希 王磊 刘文 杨奇
• 机 构: Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,State Ke
• 出 处: Chinese Optics Letters
• 发表日期: 2016年04期
• 关键词: waveguide splitter shaped covering junction Polarization extinction fabrication

We propose an ultra-broadband and fabrication-tolerant polarization rotator-splitter(PRS) based on a waveguide with an L-shaped cross section and a Y-junction. The proposed PRS is based on the 220 nm siliconon-insulator platform, and it shows less than 0.27 dB insertion losses and larger than 14 dB polarization extinction ratios over a wavelength range from 1200 to 1700 nm. To the best of our knowledge, the PRS working in the whole optical communication band is proposed for the first time.

We propose an ultra-broadband and fabrication-tolerant polarization rotator-splitter (PRS) based on a waveguide with an L-shaped cross section and a Y-junction. The proposed PRS is based on the 220 nm siliconon-insulator platform, and it shows less than 0.27 dB insertion losses and larger than 14 dB polarization extinction ratios over a wavelength range from 1200 to 1700 nm. To the best of our knowledge, the PRS working in the whole optical communication band is proposed for the first time.