An all-optical 3:8
decoder unit with the help of terahertz optical asymmetric demultiplexer (TOAD)
is proposed. The all-optical 3:8 decoder unit with a set of all-optical
full-adders and optical exclusive-ORs (XORs), can be used to perform a fast
central processor unit using optical hardware components. We try to exploit the
advantages of TOAD-based optical switch to design an integrated all-optical
circuit which can perform decoding of signal. A theoretical model is presented
and verified through numerical simulation. The new method promises both higher
processing speed and accuracy. The model can be extended for studying more
complex all-optical circuit of enhanced functionality in which decoder is the
basic building block. The operation of the proposed circuit is parallel in
nature. The impact of the switching energy with small signal gain and variation
of extinction ratio and contrast ration with control pulse energy of the
switching outcome is explored and assessed by means of numerical simulations.
References
[1]
Zoiros, K.E., Vardakas, J., Houbavlis, T. and Moyssidis, M. (2005) Investigation of SOA-Assisted Sagnac Recirculating Shift Register Switching Characteristics. International Journal for Light and Electron Optics, 116, 527-541. http://dx.doi.org/10.1016/j.ijleo.2005.03.005
[2]
Bhattacharyya, A., Gayen, D.K. and Chattopadhyay, T. (2013) All-Optical Binary Coded Decimal to Binary Converter with the Help of Terahertz Asymmetric Demultiplexer Based Switch. Proceedings of 5th International Conference on Computers and Devices for Communication (CODE), Kolkata, 17-19 December 2012, 1-4. http://dx.doi.org/10.1109/CODEC.2012.6509307
[3]
Suzuki, M. and Uenohara, H. (2009) Invesigation of All-Optical Error Detection Circuitusing SOA-MZI Based XOR Gates at 10 Gbit/s. Electronics Letters, 45, 224. http://dx.doi.org/10.1049/el:20093461
[4]
Minh, H.L., Ghassemlooy, Z. and Ng, W.P. (2008) Characterization and Performance Analysis of a TOAD Switch Employing a Dual Control Pulse Scheme in High Speed OTDM Demultiplexer. IEEE Communications Letters, 12, 316-318. http://dx.doi.org/10.1109/LCOMM.2008.061299
[5]
Li, G. (2009) Recent Advances in Coherent Optical Communication. Advances in Optics and Photonics, 1, 279-307. http://dx.doi.org/10.1364/AOP.1.000279
[6]
Bhattacharyya, A., Gayen, D.K. and Chattopadhyay, T. (2012) 4-Bit All-Optical Binary to Two’s Complement Converter. Proceedings of International Conference on Communications, Devices and Intelligent Systems, Kolkata, 28-29 December 2012, 496-499. http://dx.doi.org/10.1109/codis.2012.6422247
[7]
Wang, B., Baby, V., Tong, W., Xu, L., Friedman, M., Runser, R., Glesk, I. and Prucnal, P. (2002) A Novel Fast Optical Switch Based on Two Cascaded Terahertz Optical Asymmetric Demultiplexers (TOAD). Optics Express, 10, 15-23. http://dx.doi.org/10.1364/OE.10.000015
[8]
Sokoloff, J.P., Prucnal, P.R., Glesk, I. and Kane, M. (1993) A Terahertz Optical Asymmetric Demultiplexer (TOAD). IEEE Photonics Technology Letters, 5, 787-790. http://dx.doi.org/10.1109/68.229807
[9]
Wang, H., Wu, J. and Lin, J. (2005) Performance Analysis on Terahertz Optical Asymmetric Demultiplexer with Assist Light Injection. Optics Communications, 256, 83-97. http://dx.doi.org/10.1016/j.optcom.2005.06.037
[10]
Parolari, P., Boffi, P., Marazzi, L. and Martinelli, M. (2003) Two-Stage Sagnac Demultiplexer. Journal of Lightwave Technology, 21, 1808-1812. http://dx.doi.org/10.1109/JLT.2003.815508
Kim, S.H., Kim, J.H., Choi, J.W., Son, C.W., Byun, Y.T., Jhon, Y.M., Lee, S., Woo, D.H. and Kim, S.H. (2006) All-Optical Half-Adder Using Cross-Gain Modulation in Semiconductor Optical Amplifiers. Optics Express, 14, 10693-10698. http://dx.doi.org/10.1364/OE.14.010693
[13]
Gayen, D.K., Chattopadhyay, T., Bhattacharyya, A., Basak, S. and Dey, D. (2014) All-Optical Half Adder/Subtractor Using Terahertz Optical Asymmetric Demultiplexer. Applied Optics, 53, 8400-8409.
[14]
Kim, J.H., Byun, Y.T., Jhon, Y.M., Lee, S., Woo, D.H. and Kim, S.H. (2003) All-Optical Half-Adder Using Semiconductor Optical Amplifier Based Devices. Optics Communications, 218, 345-349. http://dx.doi.org/10.1016/S0030-4018(03)01203-3
Ghosh, B., Pal, R.R. and Mukhopadhyay, S. (2011) A New Approach to All-Optical Half-Adder by Utilizing Semiconductor Optical Amplifier Based MZI Wavelength Converter. Optik—International Journal for Light and Electron Optics, 122, 1804-1807. http://dx.doi.org/10.1016/j.ijleo.2010.10.042
[17]
Li, P., Huang, D., Zhang, X. and Zhu, G. (2006) Ultra-High Speed All-Optical Half-Adder Based on Four Wave Mixing in Semiconductor Optical Amplifier. Optics Express, 14, 11839-11847. http://dx.doi.org/10.1364/OE.14.011839
[18]
Kim, J.H., Kim, S.H., Son, C.W., Ok, S.H., Kim, S.J., Choi, J.W., Byun, Y.T., Jhon, Y.M., Lee, S., Woo, D.H. and Kim, S.H. (2005) Realization of All-Optical Full-Adder Using Cross-Gain Modulation. Proceedings of the Conference on Semiconductor Lasers and Applications, SPIE, 5628, 333-340. http://dx.doi.org/10.1117/12.576410
[19]
Poustie, A., Blow, K.J., Kelly, A.E. and Manning, R.J. (1999) All-Optical Full-Adder with Bit Differential Delay. Optics Communications, 168, 89-93. http://dx.doi.org/10.1016/S0030-4018(99)00348-X
[20]
Mukhopadhyay, S. and Chakraborty, B. (2009) A Method of Developing Optical Half-and Full-Adders Using Optical Phase Encoding Technique. Proceedings of the Conference on Communications, Photonics, and Exhibition (ACP), Shanghai, 2-6 November 2009, 1-2.
[21]
Ghosh, P., Kumbhakar, D., Mukherjee, A.K. and Mukherjee, K. (2011) An All-Optical Method of Implementing a Wavelength Encoded Simultaneous Binary Full-Adder-Full-Subtractor Unit Exploiting Nonlinear Polarization Rotation in Semiconductor Optical Amplifier. Optik—International Journal for Light and Electron Optics, 122, 1757-1763. http://dx.doi.org/10.1016/j.ijleo.2010.10.039
[22]
Mukherjee, K. (2011) Method of Implementation of Frequency Encoded All-Optical Half-Adder, Half-Subtractor, and Full-Adder Based on Semiconductor Optical Amplifiers and Add Drop Multiplexers. Optik—International Journal for Light and Electron Optics, 122, 1188-1194. http://dx.doi.org/10.1016/j.ijleo.2010.07.026
[23]
Wang, J., Sun, J. and Sun, Q. (2007) Single-PPLN-Based Simultaneous Half-Adder, Half-Subtracter, and OR Logic Gate: Proposal and Simulation. Optics Express, 15, 1690-1699. http://dx.doi.org/10.1364/OE.15.001690
[24]
Sokoloff, J.P., Glesk, I., Prucnal, P.R. and Boneck, R.K. (1994) Performance of a 50 Gbit/s Optical Time Domain Multiplexed System Using a Terahertz Optical Asymmetric Demultiplexer. IEEE Photonics Technology Letters, 6, 98-100. http://dx.doi.org/10.1109/68.265902
[25]
Eiselt, M., Pieper, W. and Weber, H.G. (1995) SLALOM: Semiconductor Laser Amplifier in a Loop Mirror. Journal of Lightwave Technology, 13, 2099-2112. http://dx.doi.org/10.1109/50.469721
[26]
Gayen, D.K., Chattopadhyay, T., Das, M.K., Roy, J.N. and Pal, R.K. (2011) All-Optical Binary to Gray Code and Gray to Binary Code Conversion Scheme with the Help of Semiconductor Optical Amplifier-Assisted Sagnac Switch. IET Circuits, Devices & Systems, 5, 123-131. http://dx.doi.org/10.1049/iet-cds.2010.0069
[27]
Houbavlis, T., Zoiros, K.E., Kanellos, G. and Tsekrekos, C. (2004) Performance Analysis of Ultrafast All-Optical Boolean XOR Gate Using Semiconductor Optical Amplifier-Based Mach-Zehnder Interferometer. Optics Communications, 232, 179-199. http://dx.doi.org/10.1016/j.optcom.2003.12.062
[28]
Houbavlis, T. and Zoiros, K.E. (2003) 10-GHz All-Optical Recirculating Shift Register with Semiconductor Optical Amplifier (SOA)-Assisted Sagnac Switch and SOA Feedback. Optical Engineering, 42, 2483-2484. http://dx.doi.org/10.1117/1.1599363
[29]
Gutierrez-Castrejon, R., Occhi, L., Schares, L. and Guekos, G. (2001) Recovery Dynamics of Cross-Modulated Beam Phase in Semiconductor Amplifiers and Applications to All-Optical Signal Processing. Optics Communications, 195, 167-177. http://dx.doi.org/10.1016/S0030-4018(01)01315-3
