Paper Info
Title
Accurate time/frequency transfer method using bidirectional WDM transmission
Abstract
An accurate time transfer method is proposed using bidirectional wavelength division multiplexing (WDM) signal transmission along a single optical fiber. This method will be used in digital telecommunication networks to yield a time synchronization accuracy of better than 1 ns for long transmission lines over several tens of kilometers. The method can accurately measure the difference in delay between two wavelength signals caused by the chromatic dispersion in the fiber for conventional simple bidirectional dual-wavelength frequency transfer methods. We describe the characteristics of this difference in delay and show that the accuracy of the delay measurement can be obtained below 0.1 ns by transmitting 156-Mb/s time reference signals of 1.31 and 1.55 μm along a 50-km fiber using the proposed method. Subnanosecond delay measurement using the simple bidirectional dual-wavelength transmission along a 100-km fiber with a wavelength spacing of 1 nm in the 1.55-μm range is also shown
Year
DOI
Venue
1998
10.1109/19.744202
Instrumentation and Measurement, IEEE Transactions
Keywords
Field
DocType
delays,frequency measurement,optical fibre dispersion,optical fibre networks,synchronisation,time measurement,wavelength division multiplexing,1.31 micron,1.55 micron,100 km,156 Mbit/s,50 km,bidirectional wavelength division multiplexing signal transmission,chromatic dispersion,delay measurement,digital telecommunication network,frequency transfer,optical fiber,time synchronization,time transfer,transmission line
Wavelength-division multiplexing,Optical fiber,Transmission (telecommunications),Dispersion (optics),Optical communication,Frequency-division multiplexing,Optics,Electronic engineering,Time–frequency analysis,Mathematics,Time transfer
Journal
Volume
Issue
ISSN
47
2
0018-9456
Citations 
PageRank 
References 
1
0.62
1
Authors
2
Name
Order
Citations
PageRank
Atsushi Imaoka110.62
Masami Kihara242.48