Download presentation
Presentation is loading. Please wait.
Published byLeonard Ethelbert Long Modified over 9 years ago
1
Protection notice / Copyright notice Bidirectional EDFA for future XL-PONs M. Rasztovits-Wiech / Siemens, 25. September 2006 Copyright © Siemens AG 2006. All rights reserved.
2
Page 2 September 2006 Copyright @ Siemens AG 2006. All rights reserved Siemens / Austria / PSE SMC CI Content 1.Objectives of XL-PON 2.System overview 3.Optical amplifier, requirements and design 4.Experiments 5.Summary
3
Page 3 September 2006 Copyright @ Siemens AG 2006. All rights reserved Siemens / Austria / PSE SMC CI Objectives of XL-PON 512 users (ONTs) Total reach up to 100km 10Gbit/s downstream 2.5Gbit/s upstream WDM in the feeder/metro Network ~65dB loss 40dB amplification required
4
Page 4 September 2006 Copyright @ Siemens AG 2006. All rights reserved Siemens / Austria / PSE SMC CI XL-PON system overview < 70 km < 30 km OLT 10Gbps / 2.5Gbps One fiber for access to all MAPs 1:512 EDFA, OADM Transponder MAP ONT OLT all downstream and ONT upstream in C-band colorless ONT Low power consumption in amplification nodes
5
Page 5 September 2006 Copyright @ Siemens AG 2006. All rights reserved Siemens / Austria / PSE SMC CI MAP – Metro Access Point Approach: downstream saturates bidirectional EDFA Challenge: Reflections Gain of BEDFA <=20dB splitter included
6
Page 6 September 2006 Copyright @ Siemens AG 2006. All rights reserved Siemens / Austria / PSE SMC CI Characteristics of the EDFAs PEDFA (downstream preamplifier, unidirectional) Low cost commercial type with uncooled pump @ 980nm Output power controlled BEDFA (bidirectional) 18dBm output power, NF <7dB 13m EDF, 200mW pump power @ 980nm Output power controlled
7
Page 7 September 2006 Copyright @ Siemens AG 2006. All rights reserved Siemens / Austria / PSE SMC CI Prototype BEDFA and other optics PEDFA 1:8 splitter BEDFA pump
8
Page 8 September 2006 Copyright @ Siemens AG 2006. All rights reserved Siemens / Austria / PSE SMC CI BEDFA - Optical Spectrum DownstreamUpstream 3nm
9
Page 9 September 2006 Copyright @ Siemens AG 2006. All rights reserved Siemens / Austria / PSE SMC CI Experiment 1 - interaction between US and DS Without USWith US
10
Page 10 September 2006 Copyright @ Siemens AG 2006. All rights reserved Siemens / Austria / PSE SMC CI Experiment 2 – Upstream channel Features of transponder: 2.5Gbit/s APD RX Autonomous burst detection 17dB dynamics OSNR = 13.5dB@0.1nm Result:
11
Page 11 September 2006 Copyright @ Siemens AG 2006. All rights reserved Siemens / Austria / PSE SMC CI Experiment 3 - Setup Aim: Evaluate sensitivity against ODN structure at 10Gbit/s All but one open (APC) mixed connection "best case"
12
Page 12 September 2006 Copyright @ Siemens AG 2006. All rights reserved Siemens / Austria / PSE SMC CI Experiment 3 - Result ~ 1dB
13
Page 13 September 2006 Copyright @ Siemens AG 2006. All rights reserved Siemens / Austria / PSE SMC CI Summary and Conclusion A bidirectional amplification scheme for future XL-PONs was evaluated 10Gbit/s downstream channel without distortion No penalty due to upstream channel 2.5Gbit/s upstream channel without distortion Upstream BER within expectation Sufficient after FEC Reflections can be kept under control Low penalty in realistic network Power consumption < 4 W
14
Page 14 September 2006 Copyright @ Siemens AG 2006. All rights reserved Siemens / Austria / PSE SMC CI Thank you for your attention! This work is funded by the EC Integrated Project MUSE www.ist-muse.org Multi Service Access Everywhere
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.