NDLI: Impact of backreflection on upstream transmission in WDM single-fiber loopback access networks

Content Provider	IEEE Xplore Digital Library
Author	Fujiwara, M. Jun-ichi Kani Suzuki, H. Iwatsuki, K.
Copyright Year	1983
Abstract	This paper investigates the impact of backreflection lights on upstream transmission in wavelength division multiplexing (WDM) single-fiber loopback access networks, where a WDM light source is located at the central office (CO) and each optical network unit (ONU) includes an optical modulator with optical amplifiers. This study considers backreflection lights from two sources, the continuous wave (CW) light at the CO (Reflection-I) and the modulated signal at the ONU (Reflection-II). It is confirmed, for the first time, that the impact of Reflection-II increases strongly with ONU gain. To estimate the impact of these backreflection lights, a simple intensity noise estimation scheme is presented. This scheme clarifies that the acceptable transmission line losses is 10 dB for 1.25 Gb/s under the optical return loss (ORL) of -32 dB.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	740
Ending Page	746
Page Count	7
File Size	611935
File Format	PDF
ISSN	07338724
Volume Number	24
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wavelength division multiplexing Optical network units Optical modulation Stimulated emission Optical fiber networks Optical noise Optical losses Propagation losses WDM networks Light sources WDM Backreflection bidirectional transmission optical access network semiconductor optical amplifier single-fiber loopback transmission
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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