Characterization of L Band Erbium Doped Fiber Amplifier
Erbium doped fiber amplifiers (EDFA) have become major key components for dense wavelength division multiplexing (DWDM) in optical fiber communication systems. Recently, an L-band EDFA have gain popularity to extend optical bandwidth level in such a system. It operates in a relatively low population inversion that a total positive gain can be achieved in L-band signals level while energy absorption occurs at the conventional band. Therefore, pump power efficiency has become major issues in L band EDFA to obtain high gain and low noise figure (NF). In this research we have developed high stability and accuracy circuits using high end technology components to maximize power pumping level that is used for laser diode pumping and power meter. We used forward pumping scheme by using simple single pump structure with 980 nm pump laser into short length L band EDFA. In this experiment we have used L band EDFA with the length of 13.5 meters, the purpose is to get short length L band with efficient pumping power and to get good gain output at several pumping and signal power. The experimental results then fitted with theoretical analysis to determine performances of overall EDFA system. The performance parameter such as gain, NF and output power was taken at L band ITU wavelength standard with four different laser diode pumping powers of 53.6 mW, 61.1 mW, 64.83 mW and 68.25 mW respectively. An input signal power ranging was of −20 dBm, −15 dBm, −10 dBm and −5 dBm respectively.
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Document Type: Research Article
Affiliations: Department of Electrical Engineering, University Al Azhar Indonesia, Indonesia
Publication date: April 1, 2017
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