Reconfigurable Self-Phase Modulation Enabled by Cascaded Nonlinear Backaction in Integrated Photonics.

Authors

Chaohan Cui, Liang Zhang, Linran Fan

Published in

Physical review letters. Volume 134. Issue 10. Pages 103803. Mar 14, 2025.

Abstract

Self-phase modulation is ubiquitous in optical systems: It provides foundational functionality to numerous photonic technologies, such as soliton generation and ultrafast pulse compression. However, it remains challenging to directly modify the coefficient of self-phase modulation, which is typically regarded as a fixed property of optical materials and structures. In this work, we overcome this limitation and demonstrate reconfigurable self-phase modulation with an integrated photonic cavity. This is achieved by introducing the engineered backaction from the reservoir photonic resonance through the cascaded second-order nonlinear coupling. The coefficient of self-phase modulation is tuned from -2.7 to +4.7 of its intrinsic value. With negative coefficients, we observe the anomalous self-phase modulation, where photonic resonances are shifted towards higher frequencies. With the reconfigurable self-phase modulation, we further demonstrate the control of spontaneous chiral symmetry breaking in the integrated photonic ring cavity.

PMID:
40153650
Bibliographic data and abstract were imported from PubMed on 29 Mar 2025.

Read full publication at:
Please sign in to see all details.

Stats

1-terrible, 9-excellent. How would you rate this publication? Sign in in to submit your rating.

Post a comment

You need to be signed in to post comments. You can sign in here.

Comments

There are no comments yet.