Rayleigh Backscattering Performance of OFDM-QAM in Carrier Distributed Passive Optical Networks

• Published in: IEEE photonics technology letters Vol. 20; no. 22; pp. 1848 - 1850
• Main Authors: Chow, C.W., Yeh, C.H., Wang, C.H., Shih, F.Y., Chi, S.
• Format: Journal Article
• Language: English
• Published: New York IEEE 15.11.2008; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Backscatter; Backscattering; Bandwidth; Carriers; Noise; Noise generators; OFDM; Optical communication; Optical components; Optical devices; Optical modulation; Optical network units; Optical noise; Orthogonal Frequency Division Multiplexing; Orthogonal frequency-division multiplexing (OFDM); Passive optical networks; passive optical networks (PONs); Quadrature amplitude modulation; Rayleigh backscattering (RB); Signal generators; Spectra; Stimulated emission
• ISSN: 1041-1135; 1941-0174
• DOI: 10.1109/LPT.2008.2004351

The passive optical network (PON) using an orthogonal frequency-division-multiplexing (OFDM) format is a subject of many research works recently. Due to the high spectral efficiency, low bandwidth optical components can be used in this OFDM-PON. We quantify, for the first time, the performance of the OFDM signal when subjected to the noise generated by the two components of the Rayleigh backscattering (RB): carrier generated RB (carrier-RB) and signal generated RB (signal-RB) that are present in the carrier-distributed PONs. An RB comparison between OFDM quadrature amplitude modulation and nonreturn-to-zero is preformed.