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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2003, Volume 77, Issue 9, Pages 555–557
(Mi jetpl2798)
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This article is cited in 2 scientific papers (total in 2 papers)
Effect of injection of C-band ASE on L-band erbium-doped fiber amplifier
S. W. Harun, N. Tamchek, P. Poopalan, H. Ahmad Photonics Laboratory, Department of Physics, University of Malaya
Abstract:
The effect of injecting conventional band (C-band) amplified spontaneous emission on the performance of long wavelength band erbium-doped fiber amplifier (L-band EDFA) is demonstrated. It uses a circulator and broadband fiber Bragg grating (FBG) to route C-band ASE from a C-band EDFA. Injection of a small amount of ASE (attenuation of 20 dB and above) improves the small signal gain with a negligible noise figure penalty compared to that of an amplifier without the ASE injection. A maximum gain improvement of 3.5 dB is obtained at an attenuation of 20 dB. At very large amounts of ASE injection (attenuation of 0 dB), the gain of the amplifier is clamped at 15.2 dB from $-40$ to $-10$ dBm with a gain variation of less than 0.3 dB. The saturation power is also increased from $-8$ dBm (for without ASE injection) to 2 dBm (VOA=0 dB) with a slight noise figure penalty. These results show that the ASE injection technique can be used either for gain improvement or gain clamping in L-band EDFA.
Received: 13.03.2003
Citation:
S. W. Harun, N. Tamchek, P. Poopalan, H. Ahmad, “Effect of injection of C-band ASE on L-band erbium-doped fiber amplifier”, Pis'ma v Zh. Èksper. Teoret. Fiz., 77:9 (2003), 555–557; JETP Letters, 77:9 (2003), 461–463
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https://www.mathnet.ru/eng/jetpl2798 https://www.mathnet.ru/eng/jetpl/v77/i9/p555
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Abstract page: | 131 | Full-text PDF : | 46 | References: | 41 |
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