An SOI based polarization insensitive filter for all-optical clock recovery | Zendy

Jinghui Zou | Zendy; Yu Yu | Zendy; Weili Yang | Zendy; Zhao Wu | Zendy; Mengyuan Ye | Zendy; Guanyu Chen | Zendy; Lei Liu | Zendy; Shupeng Deng | Zendy; Xinliang Zhang | Zendy

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An SOI based polarization insensitive filter for all-optical clock recovery

Author(s) -

Jinghui Zou,

Yu Yu,

Weili Yang,

Zhao Wu,

Mengyuan Ye,

Guanyu Chen,

Lei Liu,

Shupeng Deng,

Xinliang Zhang

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.22.006647

Subject(s) - optics , fiber bragg grating , silicon on insulator , polarization (electrochemistry) , grating , jitter , resonator , clock recovery , materials science , optoelectronics , optical filter , optical amplifier , diffraction grating , physics , clock signal , optical fiber , silicon , laser , computer science , telecommunications , chemistry

We fabricate and demonstrate a compact polarization insensitive filter for all-optical clock recovery (CR) based on silicon-on-insulator (SOI), which consists of a microring resonator (MRR) and two modified two-dimensional (2D) grating couplers. The distributed Bragg reflectors (DBRs) are introduced to improve the coupling efficiency of the 2D grating coupler. The MRR works as a comb filter for CR, while the 2D grating couplers serve as the polarization diversity unit to achieve a polarization insensitive operation. A subsequent semiconductor optical amplifier (SOA) performs the amplitude equalization. Based on this scheme, a good clock signal with 970 fs timing jitter can be achieved at 44 Gb/s from input signals with arbitrary polarization states.

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