摘要
A novel twin-core photonic crystal fiber was proposed to reduce the complexity and cost of fiber Raman amplifiers.By means of a proper design,this fiber could acquire a higher and flatter Raman gain efficiency coefficient curve rR=gR/Aeff over a specified band of wavelength than a conventional fiber.A Raman amplifier was designed with this novel twin-core photonic crystal fiber to operate in C band from 1530 nm to 1565 nm.A remarkable improvement over a conventional fiber Raman amplifier was obtained.It was numerically demonstrated that when pumped with a single source,an average gain of 8.7 dB with a fluctuation of less than 0.9 dB is achievable.
A novel twin-core photonic crystal fiber was proposed to reduce the complexity and cost of fiber Raman amplifiers. By means of a proper design, this fiber could acquire a higher and flatter Raman gain efficiency coefficient curve rR=gR/Aeff over a specified band of wavelength than a conventional fiber. A Raman amplifier was designed with this novel twin-core photonic crystal fiber to operate in C band from 1530 nm to 1565 nm. A remarkable improvement over a conventional fiber Raman amplifier was obtained. It was numerically demonstrated that when pumped with a single source, an average gain of 8.7 dB with a fluctuation of less than 0.9 dB is achievable.
基金
supported by the National Natural Science Foundation of China (Grant Nos.60607005,60877033,60588502)
the Science and Technology Bureau of Sichuan Province (Grant No.2006z02-010-3)
the Youth Science and Technology Foundation of UESTC (Grant No.JX0628)
