Title :
Low-cost bidirectional optical amplifier using a unidirectional Er-doped fiber amplifier and a fiber Mach-Zehnder interferometer
Author :
Lee, Seung-Tak ; Chae, Chang-Joon
Author_Institution :
Korea Telecom Access Networks Lab., Taejon, South Korea
Abstract :
We propose a cost-effective bidirectional optical amplifier consisting of a single unidirectional Er-doped fiber amplifier and a fiber Mach-Zehnder interferometer (MZI). We demonstrated its feasibility by observing the optical spectra and measuring bit error rates when four optical signals were bidirectionally transmitted at 2.5 Gb/s over a 160-km single-mode fiber. A net gain of 17 dB and a power penalty of 0.5 dB were obtained.
Keywords :
Mach-Zehnder interferometers; erbium; optical fibre amplifiers; optical fibre communication; optical transmitters; wavelength division multiplexing; 0.5 dB; 160 km; 17 dB; 2.5 Gbit/s; bit error rates; fiber Mach-Zehnder interferometer; gain; low-cost bidirectional optical amplifier; optical spectra; power penalty; unidirectional Er-doped fiber amplifier; Erbium-doped fiber amplifier; Optical amplifiers; Optical fiber amplifiers; Optical fiber couplers; Optical filters; Optical interferometry; Optical modulation; Semiconductor optical amplifiers; Stimulated emission; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
