Adaptive power adjustment of upstream traffic for energy-saving PON access

Author

Yeh, C.H. ; Liu, Y.L. ; Liu, Y.F. ; Chow, C.W. ; Chen, H.Y.

Author_Institution

Inf. & Commun. Res. Labs., Ind. Technol. Res. Inst. (ITRI), Hsinchu, Taiwan

fYear

2012

fDate

19-21 April 2012

Firstpage

152

Lastpage

154

Abstract

Here, we first 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.

Keywords

passive optical networks; semiconductor lasers; telecommunication traffic; bias current; energy-saving PON access; fiber transmission; laser diode; modulation index; optical power; upstream traffic adaptive power adjustment; Optical fiber devices; Optical network units; Passive optical networks; Power demand; Power generation; Direct modulated laser; Energy-saving; PON;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless and Optical Communications Conference (WOCC), 2012 21st Annual

Conference_Location

Kaohsiung

Print_ISBN

978-1-4673-0940-0

Type

conf

DOI

10.1109/WOCC.2012.6198171

Filename

6198171