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Journal Article
Multi-Band Operation of Flat-Top Supercontinuum Laser Sources With Programmable Repetition Rate up to 50 GHz
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- Authors
- Minje Song, Hyunjong Choi, Gyudong Choi, Sang-Pil Han, Seungyoung Lim, Taehyun Lee, Minhyup Song
- Issue Date
- 2022-06
- Citation
- IEEE/OSA Journal of Lightwave Technology, v.40, no.11, pp.3425-3431
- ISSN
- 0733-8724
- Publisher
- Optical Society of America (OSA)
- Language
- English
- Type
- Journal Article
- Abstract
- We present ultra-broadband flat-topped supercontinuum laser sources with programmable repetition rate, spectral bandwidth, and wavelength regime. Supercontinuum sources with multiband coverage can be achieved by merging high-repetition-rate electro-optic frequency comb techniques with optical line-by-line pulse shaping. Because nonlinear broadening in the optical wave-breaking regime does not provide the required flatness and spectral bandwidth to the comb-based sources, we iteratively manipulate the spectral amplitude and phase of the optical pulse shaper. We implemented here a smooth flat-topped supercontinuum with a 97 nm bandwidth at 10 dB and programmable repetition rate up to 50 GHz by applying a bandwidth-limited quasi-super-Gaussian apodised pulse train to a highly nonlinear medium with programmable super-Gaussian and phase coefficients. This work opens new possibilities for generating robust and coherent multiple optical carriers with further C-bands in optical networks. We believe that the supercontinuum sources based on electro-optic frequency comb and pulse shaping techniques enable the provision of coherent flat-topped optical sources, at least from the L- to S-band with a programmable repetition rate and spectral bandwidth.
- KSP Keywords
- Flat-Top, High repetition rate(HRR), Laser Source, Line-by-line pulse shaping, Optical Network, Optical pulses, Pulse shaper, S-band, Spectral bandwidth, Super-Gaussian, electro-optic(EO)