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Optics Letters

Reconfigurable all-optical bistability/tristability in dual injection-locked Fabry–Perot laser diodes

Mladen Ž. Banović, Petar A. Atanasijević, Marko M. Krstić, Pedja M. Mihailovic, Jasna V. Crnjanski, Slobodan Petričević, Dejan M. Gvozdić

Published Jul 17, 2023• 5 citations
Publisher

Abstract

In this Letter, we present a detailed theoretical and experimental investigation of optical bistability and tristability in dual injection-locked Fabry-Perot laser diodes. The proposed device can be reconfigured between the bistable and tristable regimes, simply by adjusting the power level of the injected control optical signal. The tristability presented in the experiment is achieved for relatively low optical input powers between 1.03 and 1.25 mW, with the output signal ratio of up to 7 dB between stable states. Such a device is a potential candidate for designing trits, a bit analogy in ternary computational logic.

DOI
10.1364/ol.496482

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Physica Scripta•Sep 1, 2014•1 citation
In this Letter, we present a detailed theoretical and experimental investigation of optical bistability and tristability in dual injection-locked Fabry-Perot laser diodes. The proposed device can be reconfigured between the bistable and tristable regimes, simply by adjusting the power level of the injected control optical signal. The tristability presented in the experiment is achieved for relatively low optical input powers between 1.03 and 1.25 mW, with the output signal ratio of up to 7 dB between stable states. Such a device is a potential candidate for designing trits, a bit analogy in ternary computational logic.
In this paper, optical bistability characteristics are demonstrated experimentally based on a dual-mode laser system comprising a multi-mode Fabry-Pérot laser diode (MMFP-LD) and a built-in feedback cavity formed by a fiber facet. The results show that two lasing modes with frequency separation of ∼0.58 THz and comparable peak powers can be achieved by judicious adjustment of the bias current and the operating temperature of the laser chip, which has a peak fluctuation of less than ∼1 dBm over a measurement period of one hour. A combination of appropriate external injection power and wavelength detuning can result in remarkable optical bistability in two oscillation modes, in which the resulting contrast ratio between the unlocked and locked states can be up to 30 dB, and the corresponding hysteresis loop width can be changed by controlling the side-mode injection power and the wavelength detuning.
All-optical bistability based on injection locked Fabry-Perot semiconductor laser (FP-LD) and its application in all-optical storage are studied in this paper. Injection locking of FP-LD is experimentally studied in this paper. The output power characteristic of injection locked FP-LD is analyzed experimentally, showing that threshold width of hysteresis loop and the extinction-ratio are influenced by the difference in the injection optical-wavelength detuning. Furthermore, 2.5 GHz optical storage with 10 Gb/s input signal is realized by reasonably setting the control signal power. The feasibility of implementing high-speed all-optical storage is verified by using the injection locked FP-LD, which shows great applicability to the field of high speed optical fiber communication.