Effects of optical local oscillator power on the network bit error rate in optical heterodyning of comb lines from a gain-switched VCSEL comb

Karembera, Reinhard; Gibbon, T. B.

doi:10.1016/j.optlastec.2021.106955

Cited by 2 publications

(1 citation statement)

References 25 publications

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“…Considerable attention has been paid to GS-OFCs [18], [19], [27]- [40] since they have additional advantages like easy implementation, low losses, flexibility in the selection of the frequency spacing, compactness, and low energy consumption [27]. Applications of OFCs generated by GS include multi-carrier optical communications [17], [18], [41]- [43], sub-THz generation [44], radio-over-fiber [19], low noise microwave generation [45] and absorption spectroscopy [35], [36], [46].…”

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confidence: 99%

Optical Injection Locking of Longitudinal Modes in a Discrete Mode Laser: Application in Gain-Switched Optical Frequency Combs

Quirce,

Kelleher,

Valle

2024

J. Lightwave Technol.

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A detailed experimental study of the effect of external optical injection (OI) on a single-mode discrete mode laser (DML) when the wavelength of the OI is far from that of the solitary DML is presented. We show that the situation observed in Fabry Pérot lasers by Jain et al. extends to single-mode DMLs since injection locking of many longitudinal modes of the device is obtained, giving rise to a wavelength tunability larger than 37 nm. We show that the injection locking range is minimum when injecting close to the longitudinal mode that appears in the free-running DML (q = 0). We present the observed nonlinear dynamics of the laser when subject to OI with a wavelength close to a longitudinal mode with q = 0 and in particular, we show that OI induces dynamics simultaneously in several longitudinal modes. Different nonlinear dynamics are observed for positive and negative frequency detunings with respect to the injected mode. We also investigate the effect of OI in optical frequency combs (OFCs) generated by gain-switching the DML in a very wide range of wavelengths of the OI. We show that wavelength tunable injection-locked OFCs are obtained with quasi-continuous wavelength tunability larger than 37 nm.

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