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

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.

[1]  Sien Chi,et al.  WDM extended reach passive optical networks using OFDM-QAM. , 2008, Optics express.

[2]  G. Nicholson,et al.  Polarization fluctuation measurements on installed single-mode optical fiber cables , 1989 .

[3]  C.W. Chow,et al.  Demonstration of high spectral efficient OFDM-QAM long reach passive optical network , 2008, 2008 34th European Conference on Optical Communication.

[4]  Yu-Min Lin.  Demonstration and Design of High Spectral Efficiency 4Gb/s OFDM System in Passive Optical Networks , 2007, OFC/NFOEC 2007 - 2007 Conference on Optical Fiber Communication and the National Fiber Optic Engineers Conference.

[5]  Chun-Kit Chan,et al.  An optical network unit for WDM access networks with downstream DPSK and upstream remodulated OOK data using injection-locked FP laser , 2003, IEEE Photonics Technology Letters.

[6]  V. Urick,et al.  Wide-band QAM-over-fiber using phase modulation and interferometric demodulation , 2004, IEEE Photonics Technology Letters.

[7]  Lian-Kuan Chen,et al.  Upstream traffic transmitter using injection-locked Fabry-Perot laser diode as modulator for WDM access networks , 2002 .

[8]  C.W. Chow,et al.  Long Reach Passive Optical Networks , 2007, LEOS 2007 - IEEE Lasers and Electro-Optics Society Annual Meeting Conference Proceedings.

[9]  David Payne,et al.  10 Gbit/s PON with 100km reach and x1024 split , 2003 .

[10]  Chi-Wai Chow,et al.  Rayleigh noise mitigation in long-reach hybrid DWDM-TDM PONs , 2007 .

[11]  F. Heismann,et al.  Fast automatic polarization control system , 1992, IEEE Photonics Technology Letters.

[12]  C.W. Chow.  Wavelength Remodulation Using DPSK Down-and-Upstream With High Extinction Ratio for 10-Gb/s DWDM-Passive Optical Networks , 2008, IEEE Photonics Technology Letters.