Practical and cost-effective high-fidelity optical carrier dissemination using coherent communication techniques


We report a unidirectional frequency dissemination scheme for high-fidelity optical carriers deployable over telecommunication networks. For the first time, a 10 Gb/s Binary Phase Shift Keying (BPSK) signal from an ultra-narrow linewidth laser was transmitted through a field-installed optical fibre with round-trip length of 124 km between Cork City and town of Clonakilty, without inline optical amplification. At the receiver, using coherent communication techniques and optical injection-locking the carrier was recovered with noise suppression. The beat signal between the original carrier at the transmitter and recovered carrier at the receiver shows a linewidth of 2.8 kHz. Long term stability measurements revealed fractional instabilities (True Allan deviation) of 3.3 × 10-14 for 1 s averaging time, prior to phase noise cancellation.

Publication DOI:
Divisions: Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Engineering & Applied Sciences > Aston Institute of Photonics Technology
Uncontrolled Keywords: Atomic and Molecular Physics, and Optics
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://www.osa ... =oe-23-17-21678 (Publisher URL)
PURE Output Type: Article
Published Date: 2015-08-11
Accepted Date: 2015-07-14
Submitted Date: 2015-04-21
Authors: Sooudi, Ehsan
O'Gorman, James
Gunning, Paul
Ellis, Andrew D. ( 0000-0002-0417-0547)
Garcia Gunning, Fatima C.
Manning, Robert J.


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