Rayleigh backscattering rejection in single-laser homodyne transceiver for UD-WDM using λ-Shifting
Rights accessOpen Access
With the aim of using a single laser per transceiver in single fiber splitter-based passive optical networks (PON) with coherent homodyne receivers, we apply wavelength shifting in an ultra-dense wavelength division multiplexing (UD-WDM) scheme. The studied architecture is based on a dual-parallel Mach-Zehnder Modulator (DP-MZM) operating in carrier-suppressed single-sideband (CS-SSB). In this configuration, a single laser feeds both the coherent homodyne receiver, and the transmitter, simplifying the wavelength management in the PON. The modulator carries out both data modulation and wavelength shifting. In this study, a bit rate of 4 Gb/s in QPSK is used to test several roll-off factors and channel spacing configurations. The results show that power budget gains of 18 dB are achievable with a channel spacing equal to only the symbol rate.
CitationMasanas, M. [et al.]. Rayleigh backscattering rejection in single-laser homodyne transceiver for UD-WDM using λ-Shifting. "IEEE photonics technology letters", 1 Abril 2021, vol. 33, núm. 7, p. 354-357.
- Departament de Teoria del Senyal i Comunicacions - Articles de revista [2.276]
- GCO - Grup de Comunicacions Òptiques - Articles de revista 
- Doctorat en Teoria del Senyal i Comunicacions - Articles de revista 
- RF&MW - Grup de Recerca de Sistemes, Dispositius i Materials de RF i Microones - Articles de revista 
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder