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Optical fiber communication system employing Nd-doped fiber amplifier for 1400nm window
Optical fiber communication system employing Nd-doped fiber amplifier for 1400nm window
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机译:掺钕光纤放大器用于1400nm窗口的光纤通信系统
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摘要
In accordance with the invention, an optical fiber communication system comprises one or more Nd doped fiber amplifiers for amplified transmission in the 1400 nm window. The amplifier is designed with a combination of waveguide effects and selective absorption to reduce amplified spontaneous emission to acceptable levels. ??The fibre waveguide has a region (50) doped with Nd and a physically separated region (31) doped with a material such as Yb which absorbs ASE at about 1050 nm. The fibre is pumped at about 800 nm to pump the Nd-doped region which acts as an amplifier for signals in the wavelength range 1350-1450 nm. IMAGE
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