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Forced Oscillatory Motion of Trapped Counter-Propagating Solitons

Bao, Chengying and Shen, Boqiang and Suh, Myoung-Gyun and Wang, Heming and Safak, Kemal and Dai, Anan and Matsko, Andrey B. and Kärtner, Franz X. and Vahala, Kerry J. (2020) Forced Oscillatory Motion of Trapped Counter-Propagating Solitons. . (Unpublished)

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Both the group velocity and phase velocity of two solitons can be synchronized by a Kerr-effect mediated interaction, causing what is known as soliton trapping. Trapping can occur when solitons travel through single-pass optical fibers or when circulating in optical resonators. Here, we demonstrate and theoretically explain a new manifestation of soliton trapping that occurs between counter-propagating solitons in microresonators. When counter-pumping a microresonator using slightly detuned pump frequencies and in the presence of backscattering, the group velocities of clockwise and counter-clockwise solitons undergo periodic modulation instead of being locked to a constant velocity. Upon emission from the microcavity, the solitons feature a relative oscillatory motion having an amplitude that can be larger than the soliton pulse width. This relative motion introduces a sideband fine structure into the optical spectrum of the counter-propagating solitons. Our results highlight the significance of coherent pumping in determining soliton dynamics within microresonators and add a new dimension to the physics of soliton trapping.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Shen, Boqiang0000-0003-0697-508X
Suh, Myoung-Gyun0000-0002-9527-0585
Wang, Heming0000-0003-3861-0624
Vahala, Kerry J.0000-0003-1783-1380
Additional Information:This work is supported by the Air Force Office of Scientific Research (FA9550-18-1-0353) and the Kavli Nanoscience Institute. C.B. gratefully acknowledges a postdoctoral fellowship from the Resnick Institute at Caltech.
Group:Kavli Nanoscience Institute, Resnick Sustainability Institute
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)FA9550-18-1-0353
Kavli Nanoscience InstituteUNSPECIFIED
Resnick Sustainability InstituteUNSPECIFIED
Record Number:CaltechAUTHORS:20200420-125418330
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:102659
Deposited By: Tony Diaz
Deposited On:20 Apr 2020 21:00
Last Modified:20 Apr 2020 21:00

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