Gain clamping in double-pass L-band EDFA using a ring resonator

Harun, Sulaiman Wadi and Samsuri, Norhakimah Md and Ahmad, Harith (2004) Gain clamping in double-pass L-band EDFA using a ring resonator. Microwave and Optical Technology Letters, 43 (6). pp. 484-486. ISSN 0895-2477, DOI

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A gain-clamped long-wavelength-band erbium-doped fiber amplifier (L-band EDFA) based on a ring-laser cavity is demonstrated using two C/L-band wavelength-selective couplers. This new design provides improved gain characteristics and high tuneability. The gain is clamped at 11.5 dB with a gain variation of less than 0.1 dB from an input-signal power of -40 to -6 dBm by setting the variable attenua tion setting (VOA) at 8 dB, Also, the clamped-gain level can he controlled to he in the range from 4.7 to 21.3 dB by varying the VOA settings from 0 to 24 dB. However, the proposed gain-clamped amplifier suffers from noise-figure degradation, as compared to the open-ring amplifier, due to the intense ring-laser light, which counter-propagates through the EDF.

Item Type: Article
Uncontrolled Keywords: C/L-band WSC; Gain clamping; L-band EDFA; Optical amplifier; Ring resonator
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
T Technology > TA Engineering (General). Civil engineering (General)
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 09:03
Last Modified: 11 Oct 2018 09:03

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