Signal Remodulation of OFDM-QAM for Long Reach Carrier Distributed Passive Optical Networks

• Published in: IEEE photonics technology letters Vol. 21; no. 11; pp. 715 - 717
• 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 01.06.2009; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Chromatic dispersion; Dispersions; Fabry-Perot; Frequency division multiplexing; Lasers; Multiplexing; OFDM modulation; Optical communication; Optical fiber networks; Optical modulation; Optical network units; Orthogonal Frequency Division Multiplexing; Orthogonal frequency-division multiplexing (OFDM); Passive optical networks; passive optical networks (PONs); Remodulation; Semiconductor optical amplifiers; Semiconductors; signal remodulation; Spectra; Stimulated emission; Tolerances
• ISSN: 1041-1135; 1941-0174
• DOI: 10.1109/LPT.2009.2017205

The passive optical network (PON) using orthogonal frequency-division multiplexing (OFDM) is a subject of many research works recently. The OFDM signal is especially good for long reach (LR)-PON due to its high tolerance to chromatic dispersion and high spectral efficiency. We study, for the first time, the possibility of using OFDM for signal remodulation in LR-PONs. Three different colorless optical networking unit (ONU) architectures, electroabsorption modulator-based, reflective semiconductor optical amplifier-based and injection-locked Fabry-Perot laser diode-based ONUs, are tested and compared. Error-free operations are achieved in 100-km fiber transmission without dispersion compensation.