Title: Integrated reference cavity with dual-mode optical thermometry for frequency correction

Abstract

Photonic integrated resonators have advantages over traditional benchtop cavities in terms of size, weight, and cost with the potential to enable applications that require spectrally pure light. However, integrated resonators suffer from temperature-dependent frequency variations and are sensitive to external environmental perturbations, which hinders their usage in precision frequency applications. One solution is to use interrogation of the cavity temperature through dual-mode optical thermometry (DMOT) by measuring the shift of the resonance frequency difference between two polarization or optical frequency modes. Yet this approach has only been demonstrated in bulk-optic whispering gallery mode and fiber resonators. In this paper, we implement dual-mode optical thermometry in an ultra-high $Q$ integrated silicon nitride resonator. A dual-mode resonance frequency difference temperature sensitivity of $188\pm \; <\#comment/>15\mathrm{M}\mathrm{H}\mathrm{z}/\mathrm{K}$ is measured. We demonstrate feedforward DMOT frequency correction that, under an applied external temperature ramp, is able to reduce the optical frequency change to 0.31 kHz/s as compared to an uncorrected 10.03 kHz/s, a factor of $30\times \; <\#comment/>$ reduction. These results show promise for on-chip frequency correction solutions for quantum, metrology, atomic, and coherent optical communications applications.

Authors:

Zhao, Qiancheng ;

• Search DOE PAGES for author "Zhao, Qiancheng"
• Search DOE PAGES for ORCID "0000-0002-0696-8667"

Harrington, Mark W.; Isichenko, Andrei; Liu, Kaikai ;

• Search DOE PAGES for author "Liu, Kaikai"
• Search DOE PAGES for ORCID "0000-0002-1360-9646"

Behunin, Ryan O.; Papp, Scott B. ;

• Search DOE PAGES for author "Papp, Scott B."
• Search DOE PAGES for ORCID "0000-0001-8290-7076"

Rakich, Peter T.; Hoyt, Chad W.; Fertig, Chad; Blumenthal, Daniel J.

• Search DOE PAGES for author "Blumenthal, Daniel J."
• Search DOE PAGES for ORCID "0000-0002-1735-7220"

Publication Date:

Wed Nov 17 00:00:00 EST 2021

Sponsoring Org.:

USDOE Advanced Research Projects Agency - Energy (ARPA-E)

OSTI Identifier:

1830442

Grant/Contract Number:  

AR0001042

Resource Type:

Published Article

Journal Name:

Optica

Additional Journal Information:

Journal Name: Optica Journal Volume: 8 Journal Issue: 11; Journal ID: ISSN 2334-2536

Publisher:

Optical Society of America

Country of Publication:

United States

Language:

English