An efficient EYDFA with a 54 dB small signal gain
Document Type
Article
Publication Date
1-1-2007
Abstract
An efficient erbium/ytterbium codoped fiber amplifier is demonstrated by using a dual-stage configuration with a midway optical isolator and a band-pass filter (BPF). The amplifier achieved a maximum low signal gain of 54 dB and a corresponding noise figure of 6.5 dB (1536 nm) using the input signal power and total pump power of -50 dBm and 140 mW. respectively. The gain obtained by the amplifier was about 12.5 dB higher than the gain of a conventional single-stage amplifier whereas its noise figure was 3.5 dB lower. Both isolator and BPF contribute to gain and noise figure improvements by blocking backward and forward propagating amplified spontaneous emission.
Keywords
Er/Yb, EYDFA, Optical amplifier
Divisions
fac_eng,PHYSICS
Publication Title
Microwave and Optical Technology Letters
Volume
49
Issue
10
Publisher
John Wiley & Sons