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Journal article

Observation of two-wave mixing in a single-frequency fiber amplifier induced by frequency modulation

By Hauge, Jakob M.1,2; Pedersen, Jens E.3; Bondu, Magalie3; Papior, Sidsel R.4; Lægsgaard, Jesper1,2

From

Fiber Optics, Devices and Non-linear Effects, Department of Electrical and Photonics Engineering, Technical University of Denmark1

Department of Electrical and Photonics Engineering, Technical University of Denmark2

NKT Photonics A/S3

Norlase ApS4

We report on the observation of unstable two-wave mixing in a Yb-doped optical fiber amplifier induced by frequency modulation of a single-frequency laser. What is believed to be a reflection of the main signal experiences a gain much higher than that provided by the optical pumping and potentially limits power scaling under frequency modulation.

We propose an explanation for the effect based on the dynamic population and refractive index gratings formed by the interference between the main signal and its slightly frequency-detuned reflection.

Language: English
Year: 2022
Pages: 5497-5500
ISSN: 15394794 and 01469592
Types: Journal article
DOI: 10.1364/OL.473741
ORCIDs: Hauge, Jakob M. and Lægsgaard, Jesper

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