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1. 发明公开

EP1245973A1 Optical fiber terminations, optical couplers and optical coupling methods 审中-公开
标题翻译： EndstückefürLichtleitfasern，optische Koppler und optische Kopplungsverfahren
公开(公告)号：EP1245973A1
公开(公告)日：2002-10-02
申请号：EP01303031.7
申请日：2001-03-30
申请人： UNIVERSITY OF SOUTHAMPTON
发明人： Grudinin, Anatoly Borisovich , Nilsson, Johan , Clarkson, William Andrew
IPC分类号： G02B6/26 , H01S3/094
CPC分类号： G02B6/29347 , G02B6/262 , G02B6/29317 , G02B6/29394 , G02B6/32 , H01S3/0672 , H01S3/06729 , H01S3/094003 , H01S3/094007 , H01S3/094019
摘要： An optical coupler for coupling a signal light beam from a signal port (100) and a pump light beam from a pump port (110) into a common port (120) for coupling the pump and signal beams into a double-clad (DC) optical fiber (122) comprising a core (123), an inner clad (124) and an outer clad (125). The DC optical fiber has a section of coreless fiber (128) joined to it to form an extension piece. A free-space optical arrangement (130) combines the pump and signal light beams onto the common port so that the signal light beam is focused onto the core aperture at the buried interface (121) between the DC optical fiber and the coreless extension piece. The high power density signal beam focus is thus moved away from a more sensitive air:glass interface into a buried interface which has a higher damage threshold. In this way, higher signal beam powers can be handled. The invention allows higher power DC pumped amplifiers and lasers to be fabricated.
摘要翻译：一种光耦合器，用于将来自信号端口（100）的信号光束和来自泵端口（110）的泵浦光束耦合到公共端口（120）中，用于将泵浦信号光束和信号光束耦合到双包层（DC）包括芯（123），内包层（124）和外包层（125）的光纤（122）。 DC光纤具有连接到其上的无芯纤维（128）部分以形成延伸件。自由空间光学装置（130）将泵浦信号光束和信号光束组合到公共端口上，使得信号光束聚焦在DC光纤和无芯延伸片之间的掩埋接口（121）处的芯孔上。因此，高功率密度信号光束聚焦从更敏感的空气：玻璃界面移动到具有较高损伤阈值的掩埋界面中。以这种方式，可以处理更高的信号光束功率。本发明允许制造更高功率的直流泵浦放大器和激光器。

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