Gain-equalized, eight-wavelength WDM optical add-drop multiplexer with an 8-dB dynamic range
- 1 September 1995
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 7 (9) , 1075-1077
- https://doi.org/10.1109/68.414707
Abstract
The performance of a gain-equalized, eight-wavelength WDM optical add-drop multiplexer (W-ADM) has been measured. By operating the EDFA 9-dB into saturation, the gain was equalized to within 1 dB with a minimum gain of 15 dB, over a 20-nm optical bandwidth and for total input signal power variations of 8 dB. The individual output powers were constant to within 1 dB over a 6-dB range of input powers. These results indicate that for a large range of input signal powers it would not be necessary to readjust the EDFA gain equalizer. However, pump power degradation had a stronger impact on gain variation: a 1.4-dB reduction of pump power caused gain variations of 1.8 dB. In addition, polarization-dependent losses of the W-ADM induced output power fluctuations of 1.6 dB.<>Keywords
This publication has 7 references indexed in Scilit:
- Multiwavelength survivable ring network architecturesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Multiwavelength propagation in lightwave systems with strongly inverted fiber amplifiersIEEE Photonics Technology Letters, 1994
- Fiber-Amplifier Cascades with Equalization Employing Mach-Zehnder Optical Filters in Multiwavelength SystemsPublished by Optica Publishing Group ,1994
- Fiber-amplifier cascades with gain equalization in multiwavelength unidirectional inter-office ring networksIEEE Photonics Technology Letters, 1993
- A transport network layer based on optical network elementsJournal of Lightwave Technology, 1993
- Equalization in amplified WDM lightwave transmission systemsIEEE Photonics Technology Letters, 1992
- Tunable gain equalization using a Mach-Zehnder optical filter in multistage fiber amplifiersIEEE Photonics Technology Letters, 1991