Time Transfer Through Optical Fibers (TTTOF): Progress on Calibrated Clock Comparisons

Details Time Transfer Through Optical Fibers (TTTOF): Progress on Calibrated Clock Comparisons Time Transfer Through Optical Fibers (TTTOF): Progress on Calibrated Clock Comparisons

2010-12-21

arxiv.org/abs/1012.4581v1

Proc. 24th European Frequency and Time Forum, 13-16 April 2010, Noordwijk, The Netherlands

Physics

Optics

Scientific paper

During the last years the transfer of frequency signals through optical fibers has shown ultra low instabilities in various configurations. The outstanding experimental results of such point-to-point connections is motivation to develop a means to extend the frequency transfer to accurate time transfer. We aim at the synchronization of clocks located at different places of the PTB campus with an over-all uncertainty of less than 100 ps. Such an installation can be used as a part of the infrastructure connecting local time scales with the ground station setup during forthcoming ACES experiments and the local two-way satellite time and frequency transfer (TWSTFT) installations. This paper reports on the progress on time transfer through optical fibers (TTTOF) similar to the well known and long established TWSTFT scheme: A 10 MHz signal is transferred through an optical fiber connection to a remote site for realization of a time scale using a 10 MHz to 1PPS divider. For time transfer the 1PPS output is initially synchronized and then monitored by TWSTFT equipment connected by a second optical fiber to observe instabilities and uncertainties. Depending on further needs in future the transferred signal can be monitored only (for software correction) or controlled in real time by adding adequate phase shifters. We discuss procedures for a proper calibration of such TTTOF links and show results of experiments using fiber lengths up to two kilometers which prove that the proposed method is well suitable for the envisaged purpose.

Affiliated with

Also associated with

No associations

Rating

Time Transfer Through Optical Fibers (TTTOF): Progress on Calibrated Clock Comparisons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Time Transfer Through Optical Fibers (TTTOF): Progress on Calibrated Clock Comparisons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time Transfer Through Optical Fibers (TTTOF): Progress on Calibrated Clock Comparisons will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-95426