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51. 发明授权

US06310717B1 Optical amplifier and fiber module for optical amplification 失效
标题翻译：光放大器和光纤放大模块
公开(公告)号：US06310717B1
公开(公告)日：2001-10-30
申请号：US09313783
申请日：1999-05-17
申请人： Norihisa Naganuma , Norifumi Shukunami
发明人： Norihisa Naganuma , Norifumi Shukunami
IPC分类号： H01S300
CPC分类号： H01S3/094003 , H01S3/067 , H01S3/06716 , H01S3/06754
摘要： Disclosed herein is an optical amplifier reduced in gain deviation. The optical amplifier includes a nonsilica fiber doped with a rare earth, and a fiber holder in which the nonsilica fiber is inserted and fixed. The fiber holder is optically arranged so that signal light to be amplified propagates in the nonsilica fiber. The nonsilica fiber is pumped so that the nonsilica fiber provides a gain band including the wavelength of the signal light. Opposite ends of the fiber holder are hermetically sealed to thereby easily cut off the nonsilica fiber from the outside air, so that the nonsilica fiber is stabilized physically or chemically. A fluoride glass fiber is suitable for the nonsilica fiber to reduce the gain deviation in a 1.55 &mgr;m band.
摘要翻译：本文公开了减小增益偏差的光放大器。光放大器包括掺杂有稀土的非二极管光纤，以及其中插入和固定非二极纤维的光纤保持器。光纤保持器被光学地布置，使得待放大的信号光在非二极纤维中传播。泵浦非二极管光纤，使得非二极管光纤提供包括信号光的波长的增益带。纤维架的相对端密封，从而容易地将非二氧化硅纤维与外部空气切断，使得非二氧化硅纤维物理或化学稳定。氟化物玻璃纤维适用于非硅纤维，以减少1.55μm带中的增益偏差。

52. 发明授权

US6134046A Optical amplifying fiber and forming method for fiber grating 失效
标题翻译：光纤放大光纤和光纤光栅的形成方法
公开(公告)号：US6134046A
公开(公告)日：2000-10-17
申请号：US39622
申请日：1998-03-16
申请人： Norifumi Shukunami , Shinya Inagaki , Miki Takeda
发明人： Norifumi Shukunami , Shinya Inagaki , Miki Takeda
IPC分类号： G02B6/02 , G02B6/036 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/10 , H01S3/23 , H01S3/00
CPC分类号： H01S3/10023 , H01S2301/02 , H01S3/06716 , H01S3/06754
摘要： An optical amplifying fiber including a core doped with a rare earth element and having a first refractive index, a cladding surrounding the core and having a second refractive index smaller than the first refractive index, and a fiber grating formed in the core for transmitting signal light having a first wavelength and pump light having a second wavelength and removing amplified spontaneous emission. The fiber grating is preferably positioned upstream of a middle point of the entire length of the optical amplifying fiber in terms of a propagation direction of signal light.
摘要翻译：一种光学放大光纤，包括掺杂有稀土元素并具有第一折射率的芯，围绕芯并且具有小于第一折射率的第二折射率的包层以及形成在芯中的用于传输信号光的光纤光栅具有第一波长和具有第二波长的泵浦光并且去除放大的自发发射。就信号光的传播方向而言，光纤光栅优选地位于光放大光纤的整个长度的中点的上游。

53. 发明授权

US5861973A Optical amplifier for collectively amplifying optical signals having a plurality of multiplexed wavelengths 失效
标题翻译：用于集中放大具有多个复用波长的光信号的光放大器
公开(公告)号：US5861973A
公开(公告)日：1999-01-19
申请号：US736733
申请日：1996-10-25
申请人： Shinya Inagaki , Norifumi Shukunami
发明人： Shinya Inagaki , Norifumi Shukunami
IPC分类号： G02F1/35 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/094 , H01S3/10 , H01S3/17 , H01S3/30 , G02B6/22 , G02B6/26
CPC分类号： H01S3/06708 , H01S3/0672 , H01S3/06729 , H01S3/094003 , H01S3/094096
摘要： Disclosed is an optical amplifier for collectively amplifying optical signals having multiplexed wavelengths. The optical amplifier enables a gain control in a range as wide as 1 dBm or larger, and employs a fiber that is doped with a rare-earth metal, such as erbium. The erbium-doped fiber in cross section is formed of a plurality of glass materials that are doped with erbium, and excitation light wavelength bands relative to the erbium-doped fiber are provided in a number equivalent to the count of the glass materials.
摘要翻译：公开了一种用于集中放大具有复用波长的光信号的光放大器。该光放大器能够在1dBm以上的范围内进行增益控制，并且使用掺杂有诸如铒的稀土金属的光纤。掺铒光纤的截面由多个掺杂有铒的玻璃材料形成，相对于掺铒光纤的激发光波长带的数量等于玻璃材料的数量。

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