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    SYSTEM AND DEVICE FOR CASCADED RAMAN RESONATOR
    1.
    发明专利
    SYSTEM AND DEVICE FOR CASCADED RAMAN RESONATOR 失效

    公开(公告)号：JP2000029083A

    公开(公告)日：2000-01-28

    申请号：JP10733099

    申请日：1999-04-15

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： JACOBOVITZ-VESELKA GLORIA R ,  REED WILLIAM ALFRED

    IPC: G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/08 ,  H01S3/30 ,  H04B10/17

    Abstract: PROBLEM TO BE SOLVED: To provide a device which has scalable power and is more independent from an input wavelength (λp). SOLUTION: This device includes optical transmission media 32 which are coupled with a light energy source and at least one pair of gratings (44, 46, 52, 54) prescribing optical cavity for emitting light energy of output wavelength λn, and at least one pair among the gratings is written in the optical transmission media 32 with wavelength which does not correspond to the maximum gain for a shift of Raman Strokes order, the light energy is converted with less efficiency than a case wherein the gratings are written with wavelength corresponding to the maximum gain for the shift of Raman Stokes order, and maximum reflection efficiency is generated at the wavelength corresponding to the shift of Raman Stokes order.

    2.
    发明专利
    未知

    公开(公告)号：DE69900002T2

    公开(公告)日：2001-08-09

    申请号：DE69900002

    申请日：1999-04-07

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： JACOBOVITZ-VESELKA GLORIA R ,  REED WILLIAM ALFRED

    IPC: G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/08 ,  H01S3/30 ,  H04B10/17

    Abstract: Embodiments of the invention include an optical fiber laser system with a cascaded Raman resonator (CRR) or other suitable Raman frequency shifting device having a length of optical fiber with at least one input pump reflector, a series of Raman-Stokes order reflectors and an output reflector therein. The reflectors are written to provide sufficient conversion efficiency despite the use of the cascaded Raman resonator with differing pump laser wavelengths. The reflectors are written not necessarily in correspondence with the gain maxima of the intermediate Stokes orders , but instead are written to reflect with less than maximum gain conversion intensity, yet in a manner that allows different pump laser wavelengths to be converted thereby. When operating the cascaded Raman resonators at sufficiently high pump powers, input pump reflectors are not necessary. Cascaded Raman resonators designed in accordance with embodiments of the invention are useful with different pump laser wavelengths. For example, 1480 nm cascaded Raman resonators, which conventionally are used only with 1117 nm pump lasers, are useful according to embodiments of the invention with 1100 nm pump lasers as well. Similarly, 1450 nm cascaded Raman resonators, which conventionally are used only with 1100 nm pump lasers, are useful according to embodiments of the invention with 1117 nm pump lasers as well. Amplification devices according to embodiments of the invention are power scaleable in a manner sufficient to provide optical fiber amplification at a desired output wavelength for a given plurality of pump lasers having different operating wavelengths. Also, the devices according to embodiments of the invention are less complex and less expensive than conventional arrangements.

    3.
    发明专利
    未知

    公开(公告)号：DE69900002D1

    公开(公告)日：2000-05-18

    申请号：DE69900002

    申请日：1999-04-07

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： JACOBOVITZ-VESELKA GLORIA R ,  REED WILLIAM ALFRED

    IPC: G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/08 ,  H01S3/30 ,  H04B10/17

    Abstract: Embodiments of the invention include an optical fiber laser system with a cascaded Raman resonator (CRR) or other suitable Raman frequency shifting device having a length of optical fiber with at least one input pump reflector, a series of Raman-Stokes order reflectors and an output reflector therein. The reflectors are written to provide sufficient conversion efficiency despite the use of the cascaded Raman resonator with differing pump laser wavelengths. The reflectors are written not necessarily in correspondence with the gain maxima of the intermediate Stokes orders , but instead are written to reflect with less than maximum gain conversion intensity, yet in a manner that allows different pump laser wavelengths to be converted thereby. When operating the cascaded Raman resonators at sufficiently high pump powers, input pump reflectors are not necessary. Cascaded Raman resonators designed in accordance with embodiments of the invention are useful with different pump laser wavelengths. For example, 1480 nm cascaded Raman resonators, which conventionally are used only with 1117 nm pump lasers, are useful according to embodiments of the invention with 1100 nm pump lasers as well. Similarly, 1450 nm cascaded Raman resonators, which conventionally are used only with 1100 nm pump lasers, are useful according to embodiments of the invention with 1117 nm pump lasers as well. Amplification devices according to embodiments of the invention are power scaleable in a manner sufficient to provide optical fiber amplification at a desired output wavelength for a given plurality of pump lasers having different operating wavelengths. Also, the devices according to embodiments of the invention are less complex and less expensive than conventional arrangements.

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