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    • 9. 发明授权
    • Strain-managed optical waveguide assemblies and methods of forming same
    • 应变管理光波导组件及其形成方法
    • US07817884B2
    • 2010-10-19
    • US11980072
    • 2007-10-30
    • Jeffery Alan DeMerittStuart GrayDaniel Warren HawtofLuis Alberto Zenteno
    • Jeffery Alan DeMerittStuart GrayDaniel Warren HawtofLuis Alberto Zenteno
    • G02B6/26G02B6/14H01S3/067
    • G02B6/02009G02B6/4458
    • The strain-managed optical waveguide assemblies of the present invention utilize a large-mode-area (LMA) optical fiber that is annealed in a first bending such that the fiber in that configuration has substantially no axial strain. A fiber support member is then used to support the annealed LMA optical fiber in a second bending configuration that forms within the LMA optical fiber an axial strain profile that reduces stimulated Brillouin scattering (SBS) as compared to the first bending configuration, and that also preferably causes the LMA optical fiber to operate in a single mode. The LMA optical fiber may have a double-clad configuration and include a doped core that serves as a gain medium. The strain-managed optical waveguide assembly can then be used to constitute a fiber amplifier that mitigates the SBS penalty associated with high-power fiber-based optical systems. The strain-managed waveguide assembly can also provide for thermal management in high-power applications, and can be used to control SBS by controlling the temperature profile along the length of the LMA optical fiber in a manner that mitigates SBS.
    • 本发明的应变管理光波导组件利用在第一弯曲中退火的大模(LMA)光纤,使得该构型中的光纤基本上没有轴向应变。 然后使用纤维支撑构件以第二弯曲构造支撑退火的LMA光纤,在LMA光纤中形成与第一弯曲构造相比减小受激布里渊散射(SBS)的轴向应变分布,并且还优选 使LMA光纤在单一模式下工作。 LMA光纤可以具有双包层结构,并且包括用作增益介质的掺杂核。 应变管理的光波导组件然后可以用于构成光纤放大器,其减轻与大功率基于光纤的光学系统相关联的SBS损耗。 应变管理的波导组件还可以提供大功率应用中的热管理,并且可以通过以减轻SBS的方式沿着LMA光纤的长度控制温度分布来用于控制SBS。