CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 11389 > Article
Paper
23 April 2020 Two-way, pulsed laser clock synchronization
Nathan S. Barnwell, Kari M. Moran, Jonathan Itschner, Kevin Stanzione
Author Affiliations +
Proceedings Volume 11389, Micro- and Nanotechnology Sensors, Systems, and Applications XII; 113892A (2020) https://doi.org/10.1117/12.2558122
Event: SPIE Defense + Commercial Sensing, 2020, Online Only
Abstract
Free-space, optical time-transfer can synchronize two spatially distant clocks. Currently, Global Positioning System (GPS)-based clock synchronization is a common technique to adjust clocks around the globe to a time standard. GPS-based clock measurements utilize radio signals that travel from GPS satellites to receivers. Electromagnetic signals, like radio waves, that travel through the ionosphere interact with the free electrons that causes signal propagation delay proportional to 1=f2 and the total electron content, where f is the signal frequency. Uncertainty in the in propagation delay correlates to synchronization uncertainty. Radio frequency (1 GHz) clock synchronizations use atmospheric models and long integration times to correct for propagation delay uncertainty, however it is challenging to model the ionosphere. By utilizing optical frequencies (100 THz) for clock synchronization, the uncertainty in the propagation delay is reduced by a factor of 1010 enabling high-performing synchronization without ionosphere corrections. This paper introduces and evaluates the performance of free-space, pulsed laser clock synchronization in a laboratory setting. The pulsed laser synchronization technique is directly compared to a cable and frequency counter-based clock discrepancy measurement. This presentation evaluates the short and long term stability of time transfer between chip scale atomic clocks (CSAC) and compares them to a more stable oscillator.
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Nathan S. Barnwell, Kari M. Moran, Jonathan Itschner, and Kevin Stanzione "Two-way, pulsed laser clock synchronization", Proc. SPIE 11389, Micro- and Nanotechnology Sensors, Systems, and Applications XII, 113892A (23 April 2020); https://doi.org/10.1117/12.2558122
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
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
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 9 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Clocks
Pulsed laser operation
Optical testing
Avalanche photodetectors
Atmospheric propagation
Global Positioning System
Oscillators
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top