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    Article comprising a counter-pumped optical fiber raman amplifier
    2.
    发明公开
    Article comprising a counter-pumped optical fiber raman amplifier 失效
    葛根富通gepumptem faseroptischemRamanverstärker

    公开(公告)号：EP0789433A1

    公开(公告)日：1997-08-13

    申请号：EP97300696.8

    申请日：1997-02-04

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Grubb, Stephen Gregory ,  Walker, Kenneth Lee ,  Stentz, Andrew John

    IPC: H01S3/30

    CPC classification number: H01S3/302 ,  Y10S372/703

    Abstract: A low noise optical fiber Raman amplifier with integral Raman laser (FRA) is disclosed. The FRA typically comprises a fiber ring with at least two amplifier stages (21, 22), with strictly counter-propagating pump radiation. Relatively short wavelength (e.g., 1060 nm) pump power is provided to the Raman laser portion of the fiber ring. Appropriately selected and placed Bragg gratings (e.g., 204) provide one or more optical cavities in the fiber ring, such that the input pump radiation is converted to the desired amplifier pump radiation (e.g., 1240 nm, suitable for amplification of 1310 nm signal radiation). The FRA can, for instance, advantageously serve as power amplifier in digital or analog fiber communication systems, or it can serve as pre-amplifier or in-line amplifier.

    Abstract translation: 该装置包括连接输入端口和输出端口的二氧化硅基放大器光纤的光纤路径和经由WDM（13）输入的泵浦辐射。 将泵浦辐射以小于信号波长λs的波长λp引入放大器光纤，使得其在光纤中沿着上游方向在输入端口传播。 放大器光纤具有至少两段光纤（L1，L2），两条长度之和至少为200m。 光隔离器设置在两个长度之间，使得波长λs从第二长度到第一长度的辐射通过被阻挡。 泵路径自身关闭并且包括放大器光纤的一部分，所选择的路径使得初始泵浦辐射可以在其中循环。 可以将波长λp“'λp的第二泵浦辐射引入泵浦路径中，并且布拉格光栅阻止其通过。 选定和放置的布拉格光栅在光纤环中提供一个或多个光学空腔，使得输入泵浦辐射被转换成期望的放大器泵浦辐射。 波长λ可以是1310nm，λp 1240nm，λp'' 1060nm。

    Fiber light source with multimode fiber coupler
    4.
    发明公开
    Fiber light source with multimode fiber coupler 失效
    带多模光纤耦合器的光纤光源

    公开(公告)号：EP0812039A2

    公开(公告)日：1997-12-10

    申请号：EP97303565.2

    申请日：1997-05-27

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： DiGiovanni, David John ,  Grubb, Stephen Gregory ,  Inniss, Daryl ,  Jameson, Ralph Stephen ,  Walker, Kenneth Lee

    IPC: H01S3/06 ,  H01S3/094

    CPC classification number: G02B6/4215 ,  G02B6/14 ,  G02B6/29356 ,  G02B6/2937 ,  G02B6/4207 ,  H01S3/0675 ,  H01S3/094003 ,  H01S3/094069

    Abstract: In an optical fiber light source a section of multimode fiber (51) is interposed between an energizing laser (e.g., a diode laser (49)) and a single mode fiber active medium (43). In a preferred embodiment the single mode fiber active medium is surrounded by a multimode cladding (45) coupled to the multimode fiber. The source may serve as a pump laser for a fiber amplifier (30) or as an amplified spontaneous emission source. Arrangements for coupling several energizing lasers to the active medium are also described.

    Abstract translation: 在光纤光源中，一段多模光纤（51）插入激励激光器（例如二极管激光器（49））和单模光纤有源介质（43）之间。 在一个优选实施例中，单模光纤活性介质被耦合到多模光纤的多模包层（45）包围。 光源可以用作光纤放大器（30）的泵浦激光器或放大的自发辐射源。 还描述了将几个激励激光器耦合到激活介质的装置。

    Article comprising a low noise optical fiber raman amplifier
    7.
    发明公开
    Article comprising a low noise optical fiber raman amplifier 失效
    Vorrichtung mit rauscharmem faseroptischemRamanverstärker

    公开(公告)号：EP0789432A1

    公开(公告)日：1997-08-13

    申请号：EP97300692.7

    申请日：1997-02-04

    Applicant: LUCENT TECHNOLOGIES INC.

    Inventor： Grubb, Stephen Gregory ,  Walker, Kenneth Lee ,  Stentz, Andrew John

    IPC: H01S3/30

    CPC classification number: H04B10/2916 ,  H01S3/06787 ,  H01S3/094003 ,  H01S3/302 ,  H01S2301/02 ,  Y10S372/703

    Abstract: A low noise optical fiber Raman amplifier (FRA) comprises an upstream and a downstream length (23, 24) of silica-based amplifier fiber, of combined length >200 m, typically >1 km, with an optical isolator (25) disposed between the upstream and downstream lengths of amplifier fiber such that passage of backscattered signal radiation from the latter to the former is substantially blocked. In preferred embodiments counter-propagating pump radiation is coupled into the downstream length of amplifier fiber, and wavelength-selective means (26, 27) are provided for shunting the pump radiation around the optical isolator. The described FRA is advantageously incorporated into optical fiber communication systems. Exemplarily it can serve as power amplifier, as pre-amplifier, or as in-line amplifier. For instance, it can be used to replace conventional opto-electronic repeaters in existing 1.3µm fiber communication systems, or it can be used as power amplifier in a multi-subscriber optical fiber CATV system. In a still further exemplary embodiment, the FRA is used as a distributed pre-amplifier in a remotely pumped fiber communication system.

    Abstract translation: 低噪声光纤拉曼放大器（FRA）包括基于二氧化硅的放大器光纤的上游和下游长度（23,24），其长度大于> 200m，典型地> 1km，光隔离器（25）位于 放大器光纤的上游和下游长度使得后向散射信号辐射从后者到前者的通过基本上被阻挡。 在优选实施例中，反向传播的泵浦辐射被耦合到放大器光纤的下游长度中，并且提供波长选择装置（26,27）用于分流围绕光隔离器的泵浦辐射。 所描述的FRA有利地结合到光纤通信系统中。 示例性地，它可以作为功率放大器，作为前置放大器，或作为在线放大器。 例如，它可以用于替代现有的1.3μm光纤通信系统中的常规光电中继器，或者可以用作多用户光纤CATV系统中的功率放大器。 在又一示例性实施例中，FRA用作远程泵浦光纤通信系统中的分布式前置放大器。

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