1. Wide-bandwidth and long-distance WDM transmission using highly gain-flattened hybrid amplifier
- Author
-
Kazuo Aida, Shingo Kawai, Hiroji Masuda, and K.-I. Suzuki
- Subjects
Optical amplifier ,Materials science ,business.industry ,Amplifier ,Cross-phase modulation ,Bandwidth (signal processing) ,Distributed amplifier ,chemistry.chemical_element ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,Erbium ,Optics ,chemistry ,Transmission line ,Wavelength-division multiplexing ,Electrical and Electronic Engineering ,business - Abstract
A 1.5-dB gain-flatness over 67 nm is achieved with a novel hybrid amplifier comprised of a distributed Raman amplifier pumped at two wavelengths and an erbium-doped fluoride fiber amplifier. Fourteen 2.5-Gb/s signals spanning 65 nm are successfully transmitted over 900 km using the new amplifiers. Low-noise characteristics compared to the same transmission line with discrete erbium-doped fiber amplifiers are also confirmed.
- Published
- 1999
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