Calculation of receiver sensitivities in (orthogonal) subcarrier multiplexing microwave-optical links


Microwave-based all-analogue (orthogonal) subcarrier multiplexing (SCM) permits a direct processing of baseband data at Gbit/s while achieving low power consumption, low latency, low cost, and tolerance to dispersion. A key figure of merit in any SCM link is the sensitivity in the receiver, which depends on the transmitter, the link and the receiver. By analysing the impact of the nonlinearities of an optical IQ modulator in the presence of optical noise, sensitivities are mathematically estimated as a function of the optical modulation index (OMI) at the transmitter. The results are verified with simulations achieving a good agreement with the mathematical model. The theoretical model provided can be employed as a tool to predict the best achievable sensitivities and the optimum OMI in broadband SCM and orthogonal SCM links.

Publication DOI:
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: © 2017 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Uncontrolled Keywords: direct detection,optical IQ modulator,orthogonal subcarrier multiplexing,subcarrier multiplexing,Applied Mathematics
Publication ISSN: 2076-3417
Last Modified: 06 May 2024 07:18
Date Deposited: 21 Mar 2017 09:50
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2017-02-15
Accepted Date: 2017-02-13
Submitted Date: 2016-12-16
Authors: Gutiérrez, Fernando A.
Martin, Eamonn P.
Perry, Philip
Ellis, Andrew D. (ORCID Profile 0000-0002-0417-0547)
Barry, Liam P.



Version: Published Version

License: Creative Commons Attribution

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