Gain-Clamped L-Band Erbium-Doped Fiber Amplifier with Co- and Counter-Propagating Lasers

Harun, Sulaiman Wadi and Tamchek, Nizam and Poopalan, Prabakaran and Ahmad, Harith (2003) Gain-Clamped L-Band Erbium-Doped Fiber Amplifier with Co- and Counter-Propagating Lasers. Japanese Journal of Applied Physics, 42 (Part 2). L1262-L1264. ISSN 0021-4922, DOI

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The long-wavelength-band (L-band) gain-clamped erbium-doped fiber amplifier with a co- and counter-propagating ring lasers is investigated. The ring laser at 1566nm is formed with a C/L-band wavelength division multiplexing (WDM) coupler. This new technique has shown a good gain-clamping effect with gain variation of less than 0.2 dB for input signal powers from -40 to -14 dBm. Compared with an undamped amplifier, the noise figures for small signals are improved due to the suppression of backward ASE. The amplifier with a co-propagating laser has shown a better gain and noise figure compared to with a counter-propagating laser. The advantage of both gain-clamped systems is that oscillating light does not appear at the output port of the amplifier.

Item Type: Article
Uncontrolled Keywords: C/L-band WDM coupler; Co-propagating; Counter-propagating laser; Erbium-doped fiber; L-band EDFA; Optical amplifier
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 11 Oct 2018 08:10
Last Modified: 11 Oct 2018 08:10

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