-Band Bismuth-Doped Fiber Amplier With Double-Pass Conguration
نویسندگان
چکیده
—A Bismuth-doped ber amplier (BDFA) in a double-pass conguration is proposed and demonstrated. The BDFA consists of a Bismuth-doped phosphogermanosilicate (BiPGeSiO2) ber pumped by a Titanium–Sapphire source at 810 nm. The BDFA has an amplied spontaneous emission (ASE) spectrum with a 3-dB bandwidth from 1220 to 1490 nm. The maximum gain of the proposed BDFA is 2.0 dB at an input signal wavelength of 1340 nm and is a gain enhancement of 100% over a similarly congured single-pass BDFA. The proposed BDFA has a higher gain enhancement of 1.7 dB at low input signal powers but decreases to as low as 0.5 dB as the input signal power increases. Index Terms—Bismuth-doped-ber, double-pass, -band, Ti-sapphire.
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