Single mode Fabry-Pérot laser diode and its application on digital and microwave photonics

Abstract

Semiconductor laser diodes have been widely used for digital optical signal processing and microwave photonics. Most of the applications using semiconductor laser diodes use optical injection locking techniques with positive wavelength detuning. Recently, injection locking with negative wavelength detuning is getting attention for various applications. In this paper, we analyzed injection locking in single mode Fabry-Pérot laser diode with both positive and negative wavelength detuning. Based on the analysis, applications of both injection-locking techniques are identified in the field of digital photonics and microwave photonics. As an application of injection locking with positive wavelength detuning, we propose a memory accessing technique, which includes digital blocks such as decoder, switch and a SR latch using positive injection locking whereas microwave generation technique is proposed using negative injection locking.