All-optical binary logic unit (BLU) using frequency encoded data

作者：Mandal Dhoumendra; Garai Sisir Kumar^*

来源：Optical Fiber Technology, 2015, 22: 56-67.

DOI：10.1016/j.yofte.2015.01.008

• Semiconductor optical amplifier (SOA)
• Polarization switch (PSW)
• Optical logic gate
• MUX
• DMUX

In frequency division multiplexing based communication network frequency encoded data is very important. In this communication, authors propose a new approach of developing an all-optical binary logic unit (BLU) by means of which sixteen different types of binary logic operations can be performed using frequency encoded data. The authors first develop all-optical NOT, AND, OR, XOR, etc. logic gates exploiting the polarization switching character of semiconductor optical amplifier which works based on the principle of nonlinear state of polarization rotation of the probe beam. Finally these logic gates are coupled by means of polarization switches, and activated to implement different logic operations as desired using control beams of different frequencies, after being proper routing the control beams by means of 16:1 MUX and 1:16 DMUX. Frequency conversion by polarization switching character of SOA is very efficient and faster with least optical power consumption, and therefore our proposed scheme of binary logic unit with frequency encoded data offers bit error free secure different binary logic operations with faster speed of processing. Simulation result reflects the feasibility of the proposed scheme.

• 出版日期2015-3