Effect of injection of C-band ASE on L-band erbium-doped fiber amplifier

Harun, Sulaiman Wadi and Tamchek, Nizam and Poopalan, Prabakaran and Ahmad, Harith (2003) Effect of injection of C-band ASE on L-band erbium-doped fiber amplifier. Journal of Experimental and Theoretical Physics Letters, 77 (9). pp. 461-463. ISSN 0021-3640, DOI https://doi.org/10.1134/1.1591969.

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Official URL: http://dx.doi.org/10.1134/1.1591969


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 or 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 for gain clamping in L-band EDFA.

Item Type: Article
Uncontrolled Keywords: C-band ASE; L-band erbium-doped fiber amplifier
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Faculty of Science > Department of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 11 Oct 2018 08:16
Last Modified: 11 Oct 2018 08:16
URI: http://eprints.um.edu.my/id/eprint/19644

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