Double-pass high-gain low-noise EDFA over S- and C+L-bands by tunable fundamental-mode leakage loss

Chi Ming Hung*, Nan Kuang Chen, Yin-Chieh Lai, Sien Chi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We demonstrate a high-gain low-noise double-pass tunable EDFA over S- and C+L-bands by discretely introducing fundamental-mode leakage loss in a 16-m-long standard C-band Er3+ -doped fiber. The amplified spontaneous emission at the wavelengths of longer than 1530 nm can be substantially attenuated by the ASE suppressing filters to maintain high population inversion and to squeeze out the optical gain for S-band signals. When the filters are disabled, the gain bandwidth immediately returns back to the C+L-bands. Under S-band operation, a 37 dB small signal gain and a minimum 4.84 dB noise figure at 1486.9 nm are achieved with a 980 nm pump power of 154 mW.

Original languageEnglish
Pages (from-to)1454-1460
Number of pages7
JournalOptics Express
Volume15
Issue number4
DOIs
StatePublished - 19 Feb 2007

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