標題: Adaptive upstream optical power adjustment depending on required power budget in PON access
作者: Yeh, C. H.
Chow, C. W.
Liu, Y. L.
光電工程學系
Department of Photonics
關鍵字: Green network;Energy-saving;TDM-PON;NG-PON
公開日期: 1-十一月-2012
摘要: According to the present passive optical network (PON) standard, the fiber transmission lengths are from 500 m to 20 km between the optical line terminal (OLT) and different optical network units (ONUs). It will result in difference power losses (Delta P-loss) from 4 to 5 dB. Hence, we propose to adjust adaptively the output optical power of the upstream laser diode (LD) depending on the different fiber lengths. With the different fiber transmission lengths, we can properly adjust the bias current and modulation index of upstream LD for energy-saving. We characterize and analyze experimentally the relationship of output optical power and modulation amplitude Vamp under different fiber transmissions in PON access. Moreover, due to the adaptive power control of upstream signal, the optical upstream equalization also can be retrieved with power variation of 1.1 dB in this experiment. (C) 2012 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.optcom.2012.07.049
http://hdl.handle.net/11536/20639
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2012.07.049
期刊: OPTICS COMMUNICATIONS
Volume: 285
Issue: 24
起始頁: 4927
結束頁: 4930
顯示於類別:期刊論文


文件中的檔案:

  1. 000311196500035.pdf