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公开(公告)号：CA2389224A1
公开(公告)日：2001-05-25
申请号：CA2389224
申请日：2000-10-10
Applicant: CORNING INC
Inventor： CONRADI JAN , SHARMA MANISH
Abstract: A flexible bit rate clock recovery unit (30) is provided for recovering a clock signal from an input data signal, where the input data signal is transmissible at different bit rates. The flexible bit rate clock recovery unit includes a plurality of fixed rate clock recovery units (32), where eac h fixed rate clock recovery units is operative at a different rate to extract an intermediary clock signal from the input data signal; a comparator (34) for generating an encoded data signal based on an amplitude characteristic of ea ch of the intermediary clock signals, where the encoded data signal is indicati ve of the clock signal associated with the input data signal; and a selector (3 6) for selecting one of the intermediary clock signals based on the encoded dat a signal, thereby recovering the clock signal from the input data signal.
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公开(公告)号：CA2375434A1
公开(公告)日：2000-12-07
申请号：CA2375434
申请日：2000-04-24
Applicant: CORNING INC
Inventor： CONRADI JAN
IPC: H01S3/10 , H01S3/06 , H01S3/067 , H01S3/08 , H01S3/094 , H01S3/23 , H04B10/02 , H04J14/00 , H04J14/02 , H01S3/30 , H01S3/09
Abstract: A fiber laser system (10) including multiple fiber lasers fabricated to emit at respective different wavelengths when optically pumped by radiation at a pump wavelength. A pump laser (30) emits the pump radiation and pumps one or more of the fiber lasers (12, 38). The outputs of the fiber lasers are recombined onto a transmission fiber, preferably for use in a wavelength- division multiplexing (WDM) (60) telecommunication system. In one set of embodiments, an optical switch switches (32, 41) the pump radiation to only one of the fiber lasers (12, 38). A second switch (41) controlled in correspondence to the first switch (32) or a passive combiner, preferably a wavelength-division multiplexer (60), directs the output of the lasing fiber to an optical output path. In another embodiment, the one pump laser (30) simultaneously pumps all the fiber lasers. One or more pump laser may be placed in parallel, and their outputs are combined. The parallel pump lasers (30) may either be individually activated for redundancy or simultaneously operated for higher power.
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公开(公告)号：AU766856B2
公开(公告)日：2003-10-23
申请号：AU1326501
申请日：2000-07-28
Applicant: CORNING INC
Inventor： CONRADI JAN , KUMAR SHIVA , ROSENBLUM STEVEN S
Abstract: Disclosed is a negative total dispersion waveguide fiber having low attenuation and sufficiently good resistance to bend loss that attenuation is not impacted by cabling or otherwise buffering the waveguide. The total dispersion slope of the waveguide fiber is positive so that the zero dispersion wavelength is greater than 1600 nm. The waveguide fiber may advantageously be used in a link having a distributed feedback laser as a signal source. The negative dispersion of the waveguide in accordance with the invention compresses the launched signal pulse when the laser is positively chirped. The laser is operated at optimum bias, which results in positive chirp, but no dispersion penalty is incurred in the link. The waveguide fiber in accordance with the invention may also be advantageously used as a dispersion compensating fiber in a high performance multiplexed telecommunications link.
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公开(公告)号：AU2002251846A1
公开(公告)日：2002-10-15
申请号：AU2002251846
申请日：2002-01-31
Applicant: CORNING INC
Inventor： TEN SERGEY Y , CONRADI JAN , SRIKANT V
IPC: G02B6/02 , H04B10/02 , H04B10/12 , H04B10/135 , H04B10/14 , H04B10/18 , H04B10/2581
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公开(公告)号：AU5586700A
公开(公告)日：2000-12-18
申请号：AU5586700
申请日：2000-04-24
Applicant: CORNING INC
Inventor： CONRADI JAN
IPC: H01S3/10 , H01S3/06 , H01S3/067 , H01S3/08 , H01S3/094 , H01S3/23 , H04B10/02 , H04J14/00 , H04J14/02 , H01S3/30 , H01S3/09
Abstract: A fiber laser system including multiple fiber lasers fabricated to emit at respective different wavelengths when optically pumped by radiation at a pump wavelength. A pump laser emits the pump radiation and pumps one or more of the fiber lasers. The outputs of the fiber lasers are recombined onto a transmission fiber, preferably for use in a wavelength-division multiplexing (WDM) telecommunication system. In one set of embodiments, an optical switch switches the pump radiation to only one of the fiber lasers. A second switch controlled in correspondence to the first switch or a passive combiner, preferably a wavelength-division multiplexer, directs the output of the lasing fiber to an optical output path. In another embodiment, the one pump laser simultaneously pumps all the fiber lasers. One or more pump laser may be placed in parallel, and their outputs are combined. The parallel pump lasers may either be individually activated for redundancy or simultaneously operated for higher power.
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Patent Agency Ranking
公开(公告)号：WO0118566A3
公开(公告)日：2001-09-27
申请号：PCT/US0020645
申请日：2000-07-28
Applicant: CORNING INC
Inventor： CONRADI JAN , KUMAR SHIVA , ROSENBLUM STEVEN S
CPC classification number: G02B6/03644 , G02B6/02009 , G02B6/02014 , G02B6/02252 , G02B6/02257 , G02B6/02261 , G02B6/0228 , G02B6/0286 , G02B6/03611 , G02B6/03633 , G02B6/03688 , G02B6/29377
Abstract: A negative total dispersion waveguide fiber having low attenuation and compresses the launched signal pulse when the laser is positively chirped. The laser is provided at optimum bias, which results in positive chirp, but no dispersion penalty is incurred in the link. The waveguide fiber is used a dispersion compensating fiber in a high performance multiplexed telecommunications link. Curve (96) in figure 8 representative of a link comprising fiber having negative dispersion waveguide fibers. Curve (98) is representative of a link comprising fiber having negative dispersion at 1550 nm in accordance with the invention. Curve (100) is representative of a link comprising fiber in accordance with the invention and a laser source that is even more positively chirped thanthe laser to generate curve (98).
Abstract translation: 具有低衰减的负总色散波导光纤，并且当激光器正啁啾时压缩发射的信号脉冲。 激光器以最佳偏置提供，这导致正啁啾，但是链路中不会产生色散损失。 波导光纤在高性能多路复用电信链路中使用色散补偿光纤。 图8中的曲线（96）表示包括具有负色散波导纤维的光纤的链路。 曲线（98）代表包含根据本发明的在1550nm处具有负色散的光纤的链路。 曲线（100）表示根据本发明的包含光纤的链路和相对于激光产生曲线（98）甚至更加正啁啾的激光源。
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公开(公告)号：WO0249170A3
公开(公告)日：2003-08-14
申请号：PCT/US0151059
申请日：2001-10-18
Applicant: CORNING INC
Inventor： CONRADI JAN
CPC classification number: H01S3/06754 , H01S3/06758 , H01S3/302 , H01S5/50
Abstract: An optical signal amplifier includes a Raman fiber amplifier and a semiconductor optical amplifier. The Raman fiber amplifier utilizes pump radiation to amplify the optical signal resulting in an amplified optical signal. The semiconductor optical amplifier receives the amplified signal amplifying the amplified signal resulting in a twice amplified signal.
Abstract translation: 光信号放大器包括拉曼光纤放大器和半导体光放大器。 拉曼光纤放大器利用泵浦辐射来放大光信号，产生放大的光信号。 半导体光放大器接收放大的信号，放大放大的信号，产生两倍的放大信号。
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公开(公告)号：BR0013672A
公开(公告)日：2002-05-07
申请号：BR0013672
申请日：2000-07-28
Applicant: CORNING INC
Inventor： CONRADI JAN , KUMAR SHIVA , ROSENBLUM STEVEN S
Abstract: Disclosed is a negative total dispersion waveguide fiber having low attenuation and sufficiently good resistance to bend loss that attenuation is not impacted by cabling or otherwise buffering the waveguide. The total dispersion slope of the waveguide fiber is positive so that the zero dispersion wavelength is greater than 1600 nm. The waveguide fiber may advantageously be used in a link having a distributed feedback laser as a signal source. The negative dispersion of the waveguide in accordance with the invention compresses the launched signal pulse when the laser is positively chirped. The laser is operated at optimum bias, which results in positive chirp, but no dispersion penalty is incurred in the link. The waveguide fiber in accordance with the invention may also be advantageously used as a dispersion compensating fiber in a high performance multiplexed telecommunications link.
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公开(公告)号：AU8004100A
公开(公告)日：2001-05-30
申请号：AU8004100
申请日：2000-10-10
Applicant: CORNING INC
Inventor： CONRADI JAN , SHARMA MANISH
Abstract: A flexible bit rate clock recovery unit is provided for recovering a clock signal from an input data signal, where the input data signal is transmissible at different bit rates. The flexible bit rate clock recovery unit includes a plurality of fixed rate clock recovery units, where each fixed rate clock recovery units is operative at a different bit rate to extract an intermediary clock signal from the input data signal; a comparator for generating an encoded data signal based on an amplitude characteristic of each of the intermediary clock signals, where the encoded data signal is indicative of the clock signal associated with the input data signal; and a selector for selecting one of the intermediary clock signals based on the encoded data signal, thereby recovering the clock signal from the input data signal.
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公开(公告)号：AU1326501A
公开(公告)日：2001-04-10
申请号：AU1326501
申请日：2000-07-28
Applicant: CORNING INC
Inventor： CONRADI JAN , KUMAR SHIVA , ROSENBLUM STEVEN S
Abstract: Disclosed is a negative total dispersion waveguide fiber having low attenuation and sufficiently good resistance to bend loss that attenuation is not impacted by cabling or otherwise buffering the waveguide. The total dispersion slope of the waveguide fiber is positive so that the zero dispersion wavelength is greater than 1600 nm. The waveguide fiber may advantageously be used in a link having a distributed feedback laser as a signal source. The negative dispersion of the waveguide in accordance with the invention compresses the launched signal pulse when the laser is positively chirped. The laser is operated at optimum bias, which results in positive chirp, but no dispersion penalty is incurred in the link. The waveguide fiber in accordance with the invention may also be advantageously used as a dispersion compensating fiber in a high performance multiplexed telecommunications link.
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