.All-optical NOR gate based on injection-locking effect in a semiconductor laser[J].Optoelectronics Letters,2008,4(1):33-37 |
All-optical NOR gate based on injection-locking effect in a semiconductor laser |
HAN Liu-yan ZHANG Han-yi GUO Yi-li |
State Key Laboratory on Integrated Optoelectronics, National Laboratory for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China |
Abstract: |
A scheme for all-optical NOR logic gate is proposed based on injection-locking effect in a semiconductor laser. In this scheme, signal light injection into the laser will cause frequency shift of laser modes, as a result, the probe light into the laser can be switched between injection-locked and unlocked status, and its output power will be modulated. Theoretical analysis for this scheme is carried out by using a model to describe the dynamics of the injection-locked laser. By numerical simulation, the influence of laser bias current, laser length, injected signal power and signal frequency on the output performance of NOR logic gate is quantitatively analyzed. |
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