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

Sooudi, Ehsan, O'Gorman, James, Gunning, Paul, Ellis, Andrew D., Garcia Gunning, Fatima C. and Manning, Robert J. (2015). Practical and cost-effective high-fidelity optical carrier dissemination using coherent communication techniques. Optics Express, 23 (17), pp. 21678-21689.

Abstract

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: https://doi.org/10.1364/OE.23.021678
Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
Engineering & Applied Sciences > Institute of Photonics
Uncontrolled Keywords: Atomic and Molecular Physics, and Optics
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Related URLs: http://www.scopus.com/inward/record.url?scp=84957589906&partnerID=8YFLogxK (Scopus URL)
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-23-17-21678 (Publisher URL)
Published Date: 2015-08-11
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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