Single-SOA-Based Ultrahigh-Speed All-Optical Half Subtracter with PolSK Modulated Signals
LI Pei-Li1, HUANG De-Xiu2, ZHANG Xin-Liang2, WANG Yang2
1College of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing 2100462Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074
Single-SOA-Based Ultrahigh-Speed All-Optical Half Subtracter with PolSK Modulated Signals
LI Pei-Li1;HUANG De-Xiu2;ZHANG Xin-Liang2;WANG Yang2
1College of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing 2100462Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074
摘要A novel ultrahigh-speed all-optical half subtracter based on four-wave mixing (FWM) in a single semiconductor optical amplifier (SOA) is proposed. This scheme only requires a single SOA and two input signals without additional light source, so it is quite simple and compact. Due to the polarization-shift-keying (PolSK) modulated signals being used in this scheme, pattern-dependent degradation can be avoided. By numerical simulation, dependence of the critical factors of the logic gate performance, e.g., the output power of logic 1 and extinction ratio (ER), on two input signals power is investigated. In addition, the effect of the gain polarization dependence of SOA is analysed.
Abstract：A novel ultrahigh-speed all-optical half subtracter based on four-wave mixing (FWM) in a single semiconductor optical amplifier (SOA) is proposed. This scheme only requires a single SOA and two input signals without additional light source, so it is quite simple and compact. Due to the polarization-shift-keying (PolSK) modulated signals being used in this scheme, pattern-dependent degradation can be avoided. By numerical simulation, dependence of the critical factors of the logic gate performance, e.g., the output power of logic 1 and extinction ratio (ER), on two input signals power is investigated. In addition, the effect of the gain polarization dependence of SOA is analysed.
[1] Dorren H J S, Yang X L, Mishra A K, Li Z G, Ju H, Waardt H de,Khoe G D, Simoyama T, Ishikawa H, Kawashima H and Hasama T 2004 IEEE J. Select. Top. Quantum Electron. 10 1079 [2] Bogris A, Velanas P and Syvridis D 2007 IEEE Photon. Technol.Lett. 19 402 [3] Liang T K, Nunes L R, Tsuchiya M, Abedin K S, Miyazaki T, VanThourhout D, Dumon P, Baets R and Tsang H K 2006 OFC OFP1(California 5--10 March 2006) [4] Wang J, Sun J and Sun Q 2007 Opt. Express 15 1690 [5] McGeehan J E, Kumar S and Willner A E 2005 CLEO 1061(Baltimore 22--27 May 2005) [6] Li Z H and Li G F 2006 IEEE Photon. Technol. Lett. 181341 [7] Li P L, Huang D X, Zhang X L and Zhu G X 2006 Opt. Express 14 11839 [8] Matalgah Mustafa M and Radaydeh Redha M 2005 J. LightwaveTechnol. 23 1152 [9] Baroni P, Bosco G, Carena A and Poggiolini P 2006 OFC JThB43(California 5--10 March 2006) [10] Ciaramella E, D'Errico A, Proietti R and Contestabile G 2006 J. Lightwave Technol. 24 4039 [11] Calvani R, Caponi R and Cisternino F 1988 Electron. Lett. 24 642 [12] Benedetto S, Gaudino R and Poggiolini P 1995 IEEE Trans.Commun. 43 1603 [13] Benedetto S and Poggiolini P 1992 IEEE Trans. Commun. 40 708
2008, Vol. 25 
