Title :
A High-Speed Second-Order Photonic Differentiator Based on Two-Stage Silicon Self-Coupled Optical Waveguide
Author :
Liang Zhang ; Jiayang Wu ; Xi Yin ; Xiaowen Sun ; Pan Cao ; Xinhong Jiang ; Yikai Su
Author_Institution :
Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
In this paper, we propose and demonstrate an all-optical second-order differentiator based on a two-stage self-coupled optical waveguide on a silicon-on-insulator platform. The transmission spectrum of the fabricated device has a parabola-like filtering notch with a 3-dB bandwidth of up to ~ 100 GHz and a depth of ~ 12 dB. Experiments are carried out for 10-, 20-, and 40-Gb/s optical time-domain multiplexing (OTDM) picosecond pulse trains, and the second-order differentiations are achieved using the fabricated device.
Keywords :
elemental semiconductors; high-speed optical techniques; integrated optics; integrated optoelectronics; multiplexing; notch filters; optical fabrication; optical filters; optical waveguides; silicon-on-insulator; OTDM; Si; all-optical second-order differentiator; bit rate 10 Gbit/s to 40 Gbit/s; high-speed second-order photonic differentiator; optical time-domain multiplexing picosecond pulse trains; parabola-like filtering notch; second-order differentiations; silicon-on-insulator platform; transmission spectrum; two-stage silicon self-coupled optical waveguide; High-speed optical techniques; Optical amplifiers; Optical fibers; Optical filters; Optical resonators; Photonics; High speed; second-order differentiator; silicon; two-stage self-coupled optical waveguide (TS-SCOW);
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2014.2302806
