Wideband and flat-gain amplifier based on high concentration erbium-doped fibres in parallel double-pass configuration
A wideband and flat gain erbium-doped fibre amplifier (EDFA) is demonstrated using a hybrid gain medium of a zirconiabased erbium-doped fibre (Zr-EDF) and a high concentration erbium-doped fibre (EDF). The amplifier has two stages comprising a 2-m-long ZEDF and 9-m-long EDF optimised for C- and L-ba...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Kvantovaya Elektronika and Turpion Ltd
2012
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/10381/1/Wideband_and_flat-gain_amplifier_based_on_high_concentration_erbium-doped_fibres_in_parallel_double-pass_configuration.pdf http://eprints.um.edu.my/10381/ https://doi.org/10.1070/QE2012v042n03ABEH014696 |
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| Summary: | A wideband and flat gain erbium-doped fibre amplifier (EDFA) is demonstrated using a hybrid gain medium of a zirconiabased erbium-doped fibre (Zr-EDF) and a high concentration erbium-doped fibre (EDF). The amplifier has two stages comprising a 2-m-long ZEDF and 9-m-long EDF optimised for C- and L-band operations, respectively, in a double-pass parallel configuration. A chirp fibre Bragg grating (CFBG) is used in both stages to ensure double propagation of the signal and thus to increase the attainable gain in both C- and L-band regions. At an input signal power of 0 dBm, a flat gain of 15 dB is achieved with a gain variation of less than 0.5 dB within a wide wavelength range from 1530 to 1605 nm. The corresponding noise figure varies from 6.2 to 10.8 dB within this wavelength region. |
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