Design of polarization-independent adiabatic splitters fabricated on silicon-on-insulator substrates | Zendy

Jiejiang Xing | Zendy; Zhiyong Li | Zendy; Yude Yu | Zendy; Jinzhong Yu | Zendy

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Design of polarization-independent adiabatic splitters fabricated on silicon-on-insulator substrates

Author(s) -

Jiejiang Xing,

Zhiyong Li,

Yude Yu,

Jinzhong Yu

Publication year - 2013

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.21.026729

Subject(s) - tapering , adiabatic process , silicon on insulator , splitter , optics , materials science , polarization (electrochemistry) , bandwidth (computing) , dissipation , coupled mode theory , optoelectronics , silicon , refractive index , physics , telecommunications , chemistry , computer graphics (images) , computer science , thermodynamics

A novel design for a polarization-independent SOI-based 2 × 2 3-dB adiabatic splitter with sub-micron-scale dimensions is proposed and modeled. To achieve slow and smooth mode evolution, a structure with simultaneous tapering of velocity and coupling is used. To reduce the adiabatic region length by adjusting the gap separation, the coupling strengths of TE and TM polarizations as a function of the gap value are analyzed. For both polarizations, a high uniformity within ± 0.2dB over a broad bandwidth from 1520 to 1650 nm is achieved with a 300-μm-long adiabatic region.

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