Kerr-microresonator combs for low-noise frequency synthesis (Conference Presentation)

Scott Diddams; Scott Papp

doi:10.1117/12.2295517

14 March 2018 Kerr-microresonator combs for low-noise frequency synthesis (Conference Presentation)

Scott Diddams, Scott Papp

Proceedings Volume 10516, Nonlinear Frequency Generation and Conversion: Materials and Devices XVII; 105160D (2018) https://doi.org/10.1117/12.2295517
Event: SPIE LASE, 2018, San Francisco, California, United States

Abstract

Microresonator frequency combs, or microcombs, provide a new opportunity for ultra-compact and chip-integrated optical and microwave frequency synthesis. A high-Q dielectric microresonator pumped by a continuous wave laser generates a frequency comb (typically 10-1000 GHz mode spacing) via parametric four‑wave mixing. Due to the tight waveguide confinement and high nonlinearity of the integrated-photonics platform, comb generation occurs with only milliwatts of input power. Additionally, precise geometric control of the waveguide dispersion has led to ultra‑broad bandwidth microcombs suitable for f-2f self-referencing. We have leveraged these advances to demonstrate a dual microcomb optical frequency synthesizer that employs inter-locked silicon nitride and silica microcombs. A silicon nitride resonator with 1 THz mode spacing provides an octave-spanning spectra for self-referencing and connection of the 200 THz pump laser to the silicon nitride repetition rate. The mode-spacing of this comb is subsequently phase-locked with a 22 GHz silica comb that provides the countable repetition rate and final link between microwave and optical domains. This dual microcomb system thus forms a backbone in the telecom C-band against which a tunable chip-integrated laser is phase-locked with user-defined frequency at 1 Hz resolution and absolute accuracy. The core elements of this system are fully reversible, and can also be used to generate low-noise microwaves on both short and long timescales.

Conference Presentation

Citation Download Citation

Scott Diddams and Scott Papp "Kerr-microresonator combs for low-noise frequency synthesis (Conference Presentation)", Proc. SPIE 10516, Nonlinear Frequency Generation and Conversion: Materials and Devices XVII, 105160D (14 March 2018); https://doi.org/10.1117/12.2295517

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available