Title :
Multichannel bidirectional transmission using a WDM MUX/DMUX pair and unidirectional in-line amplifiers
Author :
Liaw, Shien-Kuei ; Ho, Keang-Po ; Lin, Chinlon ; Chi, Sien
Author_Institution :
Telecom. Lab., Chung-Hwa Telecom. Co. Ltd., Taiwan, China
Abstract :
We propose a repeated bidirectional WDM transmission system using cascaded WDM MUX/DMUX pairs as narrow-bandpass filters and reflection attenuators. Fiber span is increased by inserting unidirectional EDFAs between WDM MUX/DMUX pair as in-line amplifiers. A three-channel hybrid system with one 10-Gb/s and two 2.5-Gb/s channels is also demonstrated In the 1550-nm region for transmission over 150 km of dispersion-shifted fiber. Negligible power penalty due to back reflection was observed.
Keywords :
band-pass filters; demultiplexing equipment; fibre lasers; multiplexing equipment; optical fibre communication; optical filters; wavelength division multiplexing; 10 Gbit/s; 150 km; 1550 nm; 2.5 Gbit/s; WDM MUX/DMUX pair; back reflection; bidirectional WDM transmission system; cascaded WDM MUX/DMUX pairs; dispersion-shifted fiber; fiber span; in-line amplifiers; multichannel bidirectional transmission; narrow-bandpass filters; negligible power penalty; reflection attenuators; three-channel hybrid system; unidirectional EDFA; unidirectional in-line amplifiers; Circulators; Optical amplifiers; Optical attenuators; Optical fiber amplifiers; Optical fiber couplers; Optical fiber polarization; Optical filters; Optical reflection; Stimulated emission; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
