Benefits of cascaded nonlinear dynamics in hybrid fibers for low-noise supercontinuum generation

Hänzi, Pascal; Sierro, Benoît; Liu, Zhixin; Romano, Valerio; Rampur, Anupamaa; Heidt, Alexander M. (2023). Benefits of cascaded nonlinear dynamics in hybrid fibers for low-noise supercontinuum generation. Optics express, 31(7), pp. 11067-11079. Optica Publishing Group 10.1364/OE.481970

oe-31-7-11067.pdf - Published Version
Available under License Creative Commons: Attribution (CC-BY).

Download (3MB) | Preview
[img] Text
_OpEx___Benefit_of_cascaded_nonlinear_dynamics_in_hybrid_fibers_for_low_noise_supercontinuum_generation.pdf - Accepted Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (2MB) | Request a copy

The recent development of fiber supercontinuum (SC) sources with ultra-low noise levels has been instrumental in advancing the state-of-the-art in a wide range of research topics. However, simultaneously satisfying the application demands of maximizing spectral bandwidth and minimizing noise is a major challenge that so far has been addressed with compromise, found by fine-tuning the characteristics of a single nonlinear fiber transforming the injected laser pulses into a broadband SC. In this work, we investigate a hybrid approach that splits the nonlinear dynamics into two discrete fibers optimized for nonlinear temporal compression and spectral broadening, respectively. This introduces new design degrees of freedom, making it possible to select the best fiber for each stage of the SC generation process. With experiments and simulations we study the benefits of this hybrid approach for three common and commercially available highly nonlinear fiber (HNLF) designs, focusing on flatness, bandwidth and relative intensity noise of the generated SC. In our results, hybrid all-normal dispersion (ANDi) HNLF stand out as they combine the broad spectral bandwidths associated with soliton dynamics with extremely low noise and smooth spectra known from normal dispersion nonlinearities. Hybrid ANDi HNLF are a simple and low-cost route for implementing ultra-low noise SC sources and scaling their repetition rate for various applications such as biophotonic imaging, coherent optical communications, or ultrafast photonics.

Item Type:

Journal Article (Original Article)


08 Faculty of Science > Institute of Applied Physics > Lasers

UniBE Contributor:

Hänzi, Pascal Manuel, Sierro, Benoît Guy Alain, Romano, Valerio, Rampur, Anupamaa, Heidt, Alexander


600 Technology > 620 Engineering
500 Science > 530 Physics




Optica Publishing Group




Pascal Manuel Hänzi

Date Deposited:

15 Feb 2023 09:49

Last Modified:

18 Apr 2023 12:02

Publisher DOI:





Actions (login required)

Edit item Edit item
Provide Feedback