抄録
Gain characteristics of an Er3+-doped fiber for high-power picosecond input pulses are studied with an InGaAsP laser diode pump source at 1.46-1.48 µm. The output energy and peak power of the amplified pulses reach as high as 7.9 pJ and 792 mW for a repetition rate of 100 MHz and a pulse width of 10 ps. The gain saturation is so slow that the gain in high speed pulse transmission systems is determined by a steady-state saturated gain. With the Er3+-doped fiber amplifier, it is shown that solitons can be amplified and transmitted over a long dispersion-shifted fiber by using the dynamic range of an N = 1 soliton. Furthermore, optical solitons at wavelengths of 1.535 µm and 1.552 µm have been amplified and transmitted simultaneously over 30 km with an Er3+-doped fiber repeater for the first time. The collision experiments between these different wavelength solitons are described. It is shown that there is a saturation-induced cross talk between multi channel solitons, and the cross talk (the gain decrease) is determined by the average input power in high bit-rate transmission systems. Subpicosecond soliton and 20 GHz soliton pulse amplifications with Er3+-doped fiber are also described, which indicate that Er fibers are very advantageous for short pulse soliton communication. Finally, a gain coefficient as high as 2.4 dB/mW is reported using InGaAsP laser diodes.
本文言語 | English |
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ページ(範囲) | 328-345 |
ページ数 | 18 |
ジャーナル | Proceedings of SPIE - The International Society for Optical Engineering |
巻 | 1171 |
DOI | |
出版ステータス | Published - 1990 2 15 |
外部発表 | はい |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering