40-Gbit/s 3-input all-optical priority encoder based on cross-gain modulation in two parallel semiconductor optical amplifiers

doi:10.1007/s12200-012-0222-9

Front Optoelec

2012, Vol. 5

Issue (2) : 195-199 https://doi.org/10.1007/s12200-012-0222-9

RESEARCH ARTICLE

40-Gbit/s 3-input all-optical priority encoder based on cross-gain modulation in two parallel semiconductor optical amplifiers

Yin ZHANG, Jianji DONG, Lei LEI, Hao HE, Xinliang ZHANG(

)

Wuhan National Laboratory for Optoelectronics, College of Optoelectronic Science and Engineering, Huazhong University of Science & Technology, Wuhan 430074, China

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Abstract

A 3-input all-optical priority encoder is designed. Proof-of-concept experiment is performed at 40-Gbit/s based on a cross-gain modulation (XGM) in two parallel semiconductor optical amplifiers (SOAs). Output logic signals with over 10-dB extinction ratios (ERs) and clear open eye diagrams are obtained. No additional input light beam is used. The proposed scheme may be a promising candidate for future ultrafast all-optical digital signal processing circuits and computing systems.

Keywords optical computing digital information processing logic gates cross-gain modulation (XGM) semiconductor optical amplifier (SOA)

Corresponding Author(s): ZHANG Xinliang,Email:xlzhang@mail.hust.edu.cn

Issue Date: 05 June 2012

Cite this article:

Yin ZHANG,Jianji DONG,Lei LEI, et al. 40-Gbit/s 3-input all-optical priority encoder based on cross-gain modulation in two parallel semiconductor optical amplifiers[J]. Front Optoelec, 2012, 5(2): 195-199.

URL:

https://academic.hep.com.cn/foe/EN/10.1007/s12200-012-0222-9
https://academic.hep.com.cn/foe/EN/Y2012/V5/I2/195

Fig.1 3-input digital priority encoder. (a) Block diagram; (b) logical truth table; (c) schematic diagram of 3-input all-optical digital priority encoder based on XGM in two parallel SOAs

Fig.2 Experimental setup of 3-input all-optical priority encoder based on XGM in two parallel SOAs

Fig.3 Temporal traces of original signals (A, B, and C) and output logic signals (, , Y, and Y)

Fig.4 Measured optical spectra of (a) input SOA, output SOA, and Y; (b) input SOA, output SOA, and Y

Fig.5 Measured ERs (left) and EOFs (right) of output logic signals (, , Y, and Y) at 2-1 PRBS. Insets: eye diagrams at the cases indicated

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