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    • 7. 发明授权
    • 1-μm phosphate-glass fiber amplified spontaneous emission (ASE) source
    • 1-mum磷酸盐玻璃纤维放大自发发射(ASE)来源
    • US07423803B1
    • 2008-09-09
    • US11328278
    • 2006-01-09
    • Arturo Chavez-PirsonShibin JiangWenyan Tian
    • Arturo Chavez-PirsonShibin JiangWenyan Tian
    • H01S3/00
    • H01S3/06754H01S3/06795H01S3/175H01S3/176H01S2301/02
    • A phosphate glass 1-μm fiber ASE source provides high power and broadband emission that covers wavelengths on the short side of Yb-doped silica. A single-mode fiber formed from phosphate glass is doped with highly elevated concentrations of Yb dopants 0.5-30 wt. % and typically 2-10 wt. %, far higher than either silica or germano-silicate. The high concentration of Yb dopant absorbs the pump in a short length, typically 10-150 cm instead of tens of meters, to provide high saturated output power and a shifted emission spectrum. The excess power allows the fiber ASE source to be configured to provide the output powers, emission bandwidth and stability desired by many applications. Furthermore, the ASE can be configured to emit a nearly Gaussian spectral profile without sacrificing power or bandwidth. The backward emission spectrum of Yb-doped phosphate glass is centered near 1020 nm instead of 1060, which allows the ASE source to cover wavelength on the short side of Yb-doped silica, which may be important in certain applications such as ophthalmic OCT where water absorption has a transparency window.
    • 磷酸盐玻璃1-mum光纤ASE光源提供了覆盖Yb掺杂二氧化硅短边的波长的高功率和宽带发射。 由磷酸盐玻璃形成的单模纤维掺杂了高度浓度的Yb掺杂剂0.5-30wt。 %,通常为2-10wt。 %,远高于二氧化硅或硅酸锗。 高浓度的Yb掺杂剂在较短的长度(通常为10-150厘米而不是数十米)中吸收泵,以提供高饱和输出功率和偏移的发射光谱。 多余的功率允许光纤ASE源配置为提供许多应用所需的输出功率,发射带宽和稳定性。 此外,ASE可以被配置为发射几乎高斯的频谱分布,而不牺牲功率或带宽。 Yb掺杂的磷酸盐玻璃的反向发射光谱位于1020nm处,而不是1060°,这允许ASE源覆盖在Yb掺杂的二氧化硅的短边上的波长,这在某些应用中是重要的,例如眼睛OCT,其中水 吸收具有透明度窗口。
    • 10. 发明授权
    • Erbium and ytterbium co-doped phosphate glass optical fiber amplifiers using short active fiber length
    • 铒和镱共掺磷酸盐玻璃光纤放大器使用短的有源光纤长度
    • US06611372B1
    • 2003-08-26
    • US09589764
    • 2000-06-09
    • Nasser PeyghambarianShibin Jiang
    • Nasser PeyghambarianShibin Jiang
    • H01S300
    • H01S3/067C03C3/17C03C3/19H01S3/06716H01S3/06754H01S3/094007H01S3/094015H01S3/094019H01S3/094069H01S3/1608H01S3/1618H01S3/175H01S3/2333
    • An optical fiber amplifier utilizing a phosphate glass optical fiber highly doped with rare-earth ions such as erbium to exhibit high gain per unit length, enabling the use of short fiber strands to achieve the needed gain in practical fiber optical communication networks. The high-gain phosphate optical glass fiber amplifiers are integrated onto substrates to form an integrated optics amplifier module. An optical pump such as a semiconductor laser of suitable wavelength is used to promote gain inversion of erbium ions and ultimately provide power amplification of a given input signal. Gain inversion is enhanced in the erbium doped phosphate glass fiber by co-doping with ytterbium. A phosphate fiber amplifier or an integrated optics amplifier module utilizing this power amplification can be combined with other components such as splitters, combiners, modulators, or arrayed waveguide gratings to form lossless or amplified components that do not suffer from insertion loss when added to an optical network. The fiber amplifier can be a single fiber or an array of fibers. Further, the phosphate glass fibers can be designed with a temperature coefficient of refractive index close to zero enabling proper mode performance as ambient temperatures or induced heating changes the temperature of the phosphate glass fiber. Large core 50-100 &mgr;m fibers can be used for fiber amplifiers. The phosphate glass composition includes erbium concentrations of at least 1.5 weight percentage, preferably further including ytterbium at 1.5 weight percentage, or greater.
    • 利用高掺杂铒等稀土离子的磷酸盐玻璃光纤的光纤放大器,在每单位长度上表现出高增益,能够实现短纤维束实现光纤通信网络中所需的增益。 高增益磷酸盐光学玻璃光纤放大器集成到基板上,形成集成光放大器模块。 使用诸如适当波长的半导体激光器的光泵来促进铒离子的增益反转,并最终提供给定输入信号的功率放大。 掺铒磷酸盐玻璃纤维通过与镱共掺杂增强反转。 利用该功率放大的磷酸纤维放大器或集成光学放大器模块可以与诸如分离器,组合器,调制器或阵列波导光栅的其它部件组合,以形成当添加到光学器件时不会受到插入损耗的无损或放大的部件 网络。 光纤放大器可以是单根光纤或一组光纤。 此外,磷酸盐玻璃纤维可以设计成具有接近于零的折射率的温度系数,从而能够在环境温度或诱导的加热改变磷酸盐玻璃纤维的温度时实现适当的模式性能。 大纤芯50-100mum纤维可用于光纤放大器。 磷酸盐玻璃组合物包含至少1.5重量%的铒浓度,优选进一步包括1.5重量%或更大的镱。