Energy-Efficient Optical Access Networks Supported by a Noise-Powered Extender Box

A method for energy-efficient amplification by reutilization of optical noise as pumping power in access networks with extended loss budget is presented. The amplified spontaneous emission (ASE) of an optical amplifier at the customer premises is thereby reshaped and reused as a natural pump source for Erbium-doped fibers (EDF) inside the signal distribution elements of an access network. This increases the number of served customers and enables also transmission at no extra cost, by just recycling optical noise. Three scenarios, which differ in the design of the optical network unit (ONU), are evaluated and show that up to 4000 users can be served in passive optical networks with adequate signal quality for certain configurations of the ONU. Typical transmission constraints due to the use of cost-effective reflective ONUs, such as Rayleigh backscattering effects, are reduced due to the introduction of a distributed amplification scheme. Besides, full-duplex 10 Gb/s transmission on a single wavelength with simultaneous EDF pump generation is demonstrated with low-cost ONUs, based on reflective semiconductor optical amplifiers. A comparison with traditional amplification techniques is given, and the relationship between the different power consumption for the pump delivery is discussed.

[1]  F. Laurent,et al.  Reach Extension Strategies for Passive Optical Networks [Invited] , 2009, IEEE/OSA Journal of Optical Communications and Networking.

[2]  Nam Kim,et al.  Remodulation schemes with reflective SOA for colorless DWDM PON , 2007 .

[3]  P. Jeppesen,et al.  Bi-directional 120 km Long-reach PON Link Based on Distributed Raman Amplification , 2006, LEOS 2006 - 19th Annual Meeting of the IEEE Lasers and Electro-Optics Society.

[4]  G. Talli,et al.  Hybrid DWDM-TDM long-reach PON for next-generation optical access , 2006, Journal of Lightwave Technology.

[5]  Carlos Bock,et al.  Remotely amplified combined ring-tree dense access network architecture using reflective RSOA-based ONU , 2007 .

[6]  J. Prat,et al.  Enhanced transmission in long reach WDM/TDM passive optical networks by means of multiple downstream cancellation techniques , 2009, 2009 35th European Conference on Optical Communication.

[7]  Donghan Lee,et al.  Enhancement of the Performance of a Reflective SOA-Based Hybrid WDM/TDM PON System With a Remotely Pumped Erbium-Doped Fiber Amplifier , 2008, Journal of Lightwave Technology.

[8]  Slavisa Aleksic,et al.  Power efficiency of extended reach 10G-EPON and TDM/WDM PON , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[9]  Bo-Hun Choi,et al.  New pump wavelength of 1540-nm band for long-wavelength-band erbium-doped fiber amplifier (L-band EDFA) , 2003 .

[10]  Leonid G. Kazovsky,et al.  Next Generation Optical Access Networks , 2006, 2006 3rd International Conference on Broadband Communications, Networks and Systems.

[11]  Seung-Hyun Cho,et al.  First Commercial Deployment of a Colorless Gigabit WDM/TDM Hybrid PON System Using Remote Protocol Terminator , 2010, Journal of Lightwave Technology.

[12]  M. Lamponi,et al.  High Gain (30 dB) and High Saturation Power (11 dBm) RSOA Devices as Colorless ONU Sources in Long-Reach Hybrid WDM/TDM-PON Architecture , 2010, IEEE Photonics Technology Letters.

[13]  Jerry R. Meyer,et al.  Band parameters for III–V compound semiconductors and their alloys , 2001 .

[14]  P Chanclou,et al.  Scalable Extended Reach PON , 2008, OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference.

[15]  K. Shrikhande,et al.  SUCCESS: a next-generation hybrid WDM/TDM optical access network architecture , 2004, Journal of Lightwave Technology.

[16]  Bernhard Schrenk,et al.  Fortistis: Split extension in dense passive optical networks by inline amplification with remote ASE-shaped pump delivery via colorless optical network units , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[17]  M.D. Feuer,et al.  Remotely-pumped self-amplified star network for local access , 1996, Optical Fiber Communications, OFC..

[18]  Jayant Baliga,et al.  Energy Consumption in Access Networks , 2008, OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference.

[19]  J. Prat,et al.  Direct 10-Gb/s Modulation of a Single-Section RSOA in PONs With High Optical Budget , 2010, IEEE Photonics Technology Letters.

[20]  Derek Nesset,et al.  Next generation fibre-to-the-home solutions , 2008, 2008 5th International Conference on Broadband Communications, Networks and Systems.