Multiple ultra-wideband signal sources exploiting XPM in SFRL

A novel scheme for all-optical broadcast ultra-wideband (UWB) monocycle pulses generation based on cross-phase modulation (XPM) in semiconductor fiber ring laser (SFRL) is proposed, in which three UWB positive or negative monocycle pulses can be generated simultaneously. A comprehensive broad-band d...

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Bibliographic Details
Published in:Optoelectronics letters 2022-02, Vol.18 (2), p.77-84
Main Authors: Zhao, Zanshan, Xing, Weiguang, Gan, Weiming
Format: Article
Language:English
Subjects:
Dynamic models
Fiber lasers
Injection current
Lasers
Optical Devices
Optics
Phase modulation
Photonics
Physics
Physics and Astronomy
Power spectral density
Ring lasers
Semiconductor optical amplifiers
Ultrawideband
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Summary:A novel scheme for all-optical broadcast ultra-wideband (UWB) monocycle pulses generation based on cross-phase modulation (XPM) in semiconductor fiber ring laser (SFRL) is proposed, in which three UWB positive or negative monocycle pulses can be generated simultaneously. A comprehensive broad-band dynamic model for this kind of all-optical broadcast UWB monocycle sources is established, which is further applied to numerically analyze the impacts of injection current of semiconductor optical amplifier (SOA), the power and wavelength of the signal light on the performance of the UWB positive monocycle pulses with higher power spectral density. The results show that the spectra of the UWB positive and negative monocycle pulses generated by this scheme match the Federal Communications Commission (FCC) definition quite well. Three UWB positive monocycle pulses with better performance can be obtained when the power of signal light is at a high level, and three other UWB positive monocycle pulses with good tolerance to both the injection current of the SOA and the wavelength of the signal light can be obtained. In addition, the powers of the lasing light coupled into the SFRL should not be strong to obtain three UWB positive monocycle pulses with better performance.
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-022-1098-6