Mode-locking characteristics of TDM-PON upstream traffic optical power equalizers

CHEN Xiaowen

doi:10.7510/jgjs.issn.1001-3806.2014.01.027

In order to reduce the wavelength drift of the time division multiplexing passive optical network (TDM-PON) upstream traffic,based on a architecture with optical power equalization of the upstream traffic in a TDM-PON, using single mode laser injection locking Fabry-Perot laser diode (F-P LD) of optical network unit (ONU), the mode-locking characteristics of Fabry-Perot output laser wavelength was discussed, such as the range of injection-locking, the influence of driving current on mode-locking characteristics, the influence of temperature variation on the wavelength with or without injection-locking. The results show that, for such a laser, when the driving current is 9mA, the injection-locking wavelength range is 0.38nm which is larger than the 0.25nm upstream wavelength drift of the ONU caused by the 5℃ change of environmental temperature. The identical and stable wavelength of the ONU upstream traffic and the low noise after the optical power equalization were achieved by the injection-locking F-P LD.

Mode-locking characteristics of TDM-PON upstream traffic optical power equalizers

1. Department of Electronic Engineering, Fujian Polytechnic of Information Technology, Fuzhou 350003, China;

2. Co-llege of Engineering and Electronic Information, Vanung University, Zhongli 32061, China

Received Date: 2013-06-13

Accepted Date: 2013-07-03

Available Online: 2014-01-25

Abstract: In order to reduce the wavelength drift of the time division multiplexing passive optical network (TDM-PON) upstream traffic,based on a architecture with optical power equalization of the upstream traffic in a TDM-PON, using single mode laser injection locking Fabry-Perot laser diode (F-P LD) of optical network unit (ONU), the mode-locking characteristics of Fabry-Perot output laser wavelength was discussed, such as the range of injection-locking, the influence of driving current on mode-locking characteristics, the influence of temperature variation on the wavelength with or without injection-locking. The results show that, for such a laser, when the driving current is 9mA, the injection-locking wavelength range is 0.38nm which is larger than the 0.25nm upstream wavelength drift of the ONU caused by the 5℃ change of environmental temperature. The identical and stable wavelength of the ONU upstream traffic and the low noise after the optical power equalization were achieved by the injection-locking F-P LD.

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Reference (13)

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Mode-locking characteristics of TDM-PON upstream traffic optical power equalizers

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通讯作者: 陈斌, bchen63@163.com

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