Proposal for fabrication-tolerant SOI polarization splitter-rotator based on cascaded MMI couplers and an assisted bi-level taper | Zendy

Jing Wang | Zendy; Minghao Qi | Zendy; Yi Xuan | Zendy; Haiyang Huang | Zendy; You Li | Zendy; Ming Li | Zendy; Xin Chen | Zendy; Qi Jia | Zendy; Zhen Sheng | Zendy; Aimin Wu | Zendy; Wei Li | Zendy; Xi Wang | Zendy; Shichang Zou | Zendy; Fuwan Gan | Zendy

Open Access

Proposal for fabrication-tolerant SOI polarization splitter-rotator based on cascaded MMI couplers and an assisted bi-level taper

Author(s) -

Jing Wang,

Minghao Qi,

Yi Xuan,

Haiyang Huang,

You Li,

Ming Li,

Xin Chen,

Qi Jia,

Zhen Sheng,

Aimin Wu,

Wei Li,

Xi Wang,

Shichang Zou,

Fuwan Gan

Publication year - 2014

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.22.027869

Subject(s) - silicon on insulator , fabrication , optics , tolerance analysis , materials science , insertion loss , silicon photonics , optoelectronics , phase shift module , splitter , cladding (metalworking) , multi mode optical fiber , power dividers and directional couplers , photonics , silicon , physics , optical fiber , engineering , medicine , alternative medicine , pathology , engineering drawing , metallurgy

A novel silicon-on-insulator (SOI) polarization splitter-rotator (PSR) with a large fabrication tolerance is proposed based on cascaded multimode interference (MMI) couplers and an assisted mode-evolution taper. The tapers are designed to adiabatically convert the input TM(0) mode into the TE(1) mode, which will output as the TE(0) mode after processed by the subsequent MMI mode converter, 90-degree phase shifter (PS) and MMI 3 dB coupler. The numerical simulation results show that the proposed device has a < 0.5 dB insertion loss with < -17 dB crosstalk in C optical communication band. Fabrication tolerance analysis is also performed with respect to the deviations of MMI coupler width, PS width, slab height and upper-cladding refractive index, showing that this device could work well even when affected by considerable fabrication errors. With such a robust performance with a large bandwidth, this device offers potential applications for CMOS-compatible polarization diversity, especially in the booming 100 Gb/s coherent optical communications based on silicon photonics technology.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research