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公开(公告)号：JPH1117263A
公开(公告)日：1999-01-22
申请号：JP16019698
申请日：1998-06-09
Applicant: LUCENT TECHNOLOGIES INC
Inventor： LEGRANGE JANE DEBORAH , WALKER KENNETH LEE
IPC: G02B6/02 , G02B6/036 , G02B6/26 , H01S3/06 , H01S3/067 , H01S3/094 , H01S3/10 , G02B6/16 , G02B6/22
Abstract: PROBLEM TO BE SOLVED: To prevent influence on the entire optical communication system by avoiding essential damage to a protective cover film of an optical fiber when at least residual light of specified wattage is transmitted from a pumping clad. SOLUTION: Residual light enters a clad 24 or protective cover film 18 of a single mode optical fiber 20 in interconnection of two fibers 10, 20 from a pumping clad 14 and directed into the film 18 because of its higher refractive index than the clad 24, residual power from a current fiber laser essentially will give damage enough to evaporate the protective film and influence on the entire optical communication system, and using a single mode film having a protective cover film made of a material durable to the light of at least one watt transmitted into the film 18 the influence on the entire optical communication system can be avoided.
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公开(公告)号：JPH11289133A
公开(公告)日：1999-10-19
申请号：JP4411199
申请日：1999-02-23
Applicant: LUCENT TECHNOLOGIES INC
Inventor： LEGRANGE JANE DEBORAH , REED WILLIAM ALFRED , WALKER KENNETH LEE
Abstract: PROBLEM TO BE SOLVED: To avoid the attenuation caused by multiple reflectors, by a method wherein multiple narrow band reflectors having reflecting power curve in the half maximum time full width larger than a pertinent Stokes shift are arranged so as to provide a plurality of wavelength with optical cavities. SOLUTION: In an optical fiber RAMAN device composed of an optical fiber 11 in a specific length, a pumpping source 12 and a set of narrow band reflectors 13, one each of wide band mirror 21 reflects all wavelengths entered thereinto. Next, pump radiation in wavelength of λp is led into the optical fiber 11 in a specific length to be selected to reflect the radiation in respective wavelengths λ1...λn, while the wavelength difference in every adjacent two wavelengths corresponds to a Stokes shift as well as a plurality of narrow band reflectors 13 of the device in n>=2 are provided with reflecting power curve respectively having the half maximum time full width not exceeding 20 nm. Furthermore, the wide band reflectors having the half maximum time full width larger than the Stokes shift are arranged so as to form the optical cavities in wavelength of λ1...ν.
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公开(公告)号：JP2000323769A
公开(公告)日：2000-11-24
申请号：JP2000130598
申请日：2000-04-28
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DIGIOVANNI DAVID JOHN , LEGRANGE JANE DEBORAH
Abstract: PROBLEM TO BE SOLVED: To provide a pump waveguide device in which a monitor is improved for measuring pump power. SOLUTION: A pump waveguide device that has a pump waveguide 14 and an active waveguide 13 is provided with a pump power monitor by placing an indicator waveguide 18, which has a core doped with a material sensitive to pump light, between a pump source 12 and the active waveguide 13. For example, a certain material emits fluorescence in response to the pump light, or absorbs the pump light to emit heat. As a result, pump power is measured accurately with fluorescence or heat from the indicator waveguide 18. Since fluorescence or heat is generated in the doped core, a measured value is sensitive to the pump power getting in the active waveguide 13, and not sensitive to fluctuation of mode dispersion.
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公开(公告)号：JP2002016306A
公开(公告)日：2002-01-18
申请号：JP2001161552
申请日：2001-05-30
Applicant: LUCENT TECHNOLOGIES INC
Inventor： HOLCOMB DOUGLAS P , LEGRANGE JANE DEBORAH , TOURGEE GERALD E , VOGEL EVA MILAR
Abstract: PROBLEM TO BE SOLVED: To provide a waveguide laser and an amplifier wherein output power of the laser or the amplifier and response of a transmitter or a receiver which use the laser or the amplifier are not changed and temperature stability is improved. SOLUTION: The waveguide laser or the amplifier which has peak absorbing wavelength is provided with a pump discharging apparatus having a wavelength which is canceled intentionally from the peak absorbing wavelength. The canceled wavelength of the discharging apparatus is selected for improving temperature stability of the laser or the amplifier. In a representative embodiment, the laser or the amplifier is excited by binominal distribution of the discharging apparatus.
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公开(公告)号：JP2000323775A
公开(公告)日：2000-11-24
申请号：JP2000102548
申请日：2000-04-04
Applicant: LUCENT TECHNOLOGIES INC
Inventor： ARNEY SUSANNE , LEGRANGE JANE DEBORAH
Abstract: PROBLEM TO BE SOLVED: To provide a more efficient optical communication system. SOLUTION: An optical communication system economizes in electric power by coupling a splitter 110 with an optical amplifier 101. The amplifier 101 is constituted to receive optical signals 107 and pumping light. The splitter 110 supplies part 109 of the pumping light used by the amplifier 101 to another device 111 (for example, an optical amplifier, filter, or modulator) of the optical communication system. Since the part of the pumping light used by the amplifier 101 is supplied to another device in the optical communication system, the electric power required for operating the system is reduced and, accordingly, the power consumption of the system are reduced.
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Patent Agency Ranking
公开(公告)号：DE69800008D1
公开(公告)日：1999-08-05
申请号：DE69800008
申请日：1998-06-02
Applicant: LUCENT TECHNOLOGIES INC
Inventor： LEGRANGE JANE DEBORAH , WALKER KENNETH LEE
Abstract: An optical communication system comprising a light source, a cladding pumped fiber laser (10) having a pump cladding (14), an optical fiber (20) attached to the cladding pumped fiber laser, the optical fiber having a cladding (24) and a protective coating (26). and an expedient that prevents substantial damage to the protective coating of the optical fiber upon transmission of at least 1 watt of residual light out of the pump cladding. Such an expedient may be the material of the protective coating, which may comprise a metal, such as gold, aluminium or copper, or a high refractive-index polymer such as a polyimide, polyetheretherketone, polytetrafluoroethene or an epoxide. Alternatively, or in addition, the expedient may comprise an article disposed at the attachment of the laser to the fiber and capable of conducting and dissipating heat produced by the residual light, for example, a metal block having a groove that supports the laser, the fiber or both.
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公开(公告)号：DE69900082T2
公开(公告)日：2001-11-15
申请号：DE69900082
申请日：1999-02-16
Applicant: LUCENT TECHNOLOGIES INC
Inventor： LEGRANGE JANE DEBORAH , WALKER KENNETH LEE , REED WILLIAM ALFRED
Abstract: The performance of optical fiber Raman devices can be increased by substitution of a broadband reflector (typically a multilayer dielectric mirror) for some of the narrowband reflectors (typically fiber Bragg gratings) that are conventionally used to define the optical cavities of the device. The device exemplarily is a Raman laser or amplifier, and in preferred embodiments a broadband reflector reflects all the Stokesshifted wavelengths, such that the cavities are defined by the single broadband reflector and by a multiplicity of appropriately selected narrowband reflectors. Optionally the broadband reflector also serves to reflect the pump radiation.
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公开(公告)号：DE69800008T2
公开(公告)日：1999-12-23
申请号：DE69800008
申请日：1998-06-02
Applicant: LUCENT TECHNOLOGIES INC
Inventor： LEGRANGE JANE DEBORAH , WALKER KENNETH LEE
Abstract: An optical communication system comprising a light source, a cladding pumped fiber laser (10) having a pump cladding (14), an optical fiber (20) attached to the cladding pumped fiber laser, the optical fiber having a cladding (24) and a protective coating (26). and an expedient that prevents substantial damage to the protective coating of the optical fiber upon transmission of at least 1 watt of residual light out of the pump cladding. Such an expedient may be the material of the protective coating, which may comprise a metal, such as gold, aluminium or copper, or a high refractive-index polymer such as a polyimide, polyetheretherketone, polytetrafluoroethene or an epoxide. Alternatively, or in addition, the expedient may comprise an article disposed at the attachment of the laser to the fiber and capable of conducting and dissipating heat produced by the residual light, for example, a metal block having a groove that supports the laser, the fiber or both.
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公开(公告)号：DE60131494T2
公开(公告)日：2008-09-25
申请号：DE60131494
申请日：2001-05-22
Applicant: LUCENT TECHNOLOGIES INC
Inventor： HOLCOMB DOUGLAS P , LEGRANGE JANE DEBORAH , TOURGEE GERALD E , VOGEL EVA MILAR
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公开(公告)号：DE60131494D1
公开(公告)日：2008-01-03
申请号：DE60131494
申请日：2001-05-22
Applicant: LUCENT TECHNOLOGIES INC
Inventor： HOLCOMB DOUGLAS P , LEGRANGE JANE DEBORAH , TOURGEE GERALD E , VOGEL EVA MILAR
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