Della Valle G, Osellame R, Chiodo N, Taccheo S, Cerullo G, Laporta P, Killi A, Morgner U, Lederer M, Kopf D
Opt Express. 2005 Aug 8;13(16):5976-82. doi: 10.1364/opex.13.005976.
An optical waveguide amplifier fabricated on erbium-ytterbium-doped phosphate glass by direct femtosecond laser writing is demonstrated. The waveguides are manufactured using 1040-nm radiation from a diode-pumped cavity-dumped Yb:KYW oscillator, operating at a 885 kHz repetition rate, with a 350 fs pulse duration. Peak internal gain of 9.2 dB is obtained at 1535 nm, with a minimum internal gain of 5.2 dB at 1565 nm. Relatively low insertion losses of 1.9 dB enable for the first time an appreciable net gain in the full C-band of optical communications.
展示了一种通过直接飞秒激光写入在掺铒镱磷酸盐玻璃上制造的光波导放大器。这些波导是使用来自二极管泵浦腔倒空Yb:KYW振荡器的1040 nm辐射制造的，该振荡器以885 kHz的重复频率运行，脉冲持续时间为350 fs。在1535 nm处获得了9.2 dB的峰值内部增益，在1565 nm处的最小内部增益为5.2 dB。相对较低的1.9 dB插入损耗首次在光通信的整个C波段实现了可观的净增益。
