Patents by Inventor Chinlon Lin
Chinlon Lin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7892855Abstract: Disclosed is an optical sensing device including a source unit providing a beam of light with continuously modulated phase retardation between p- and s-polarization components of the light by employing a LCM; a reference unit receiving a first part of the light to provide a reference signal; a SPR sensing unit receiving a second part of the light to induce a phase retardation change between the p- and s-polarization components due to SPR associated with a sample; a probe unit receiving the light after SPR to provide a probe signal; and a detection unit connected to the reference unit and the probe unit to detect characteristics of the sample by comparing the reference signal with the probe signal. By using active phase modulation technologies and differential phase measurement, it is possible to fulfill chemical and biological detection.Type: GrantFiled: August 4, 2008Date of Patent: February 22, 2011Assignee: The Chinese University of Hong KongInventors: Ho Pui Ho, Shu Yuen Wu, Chinlon Lin, Siu Kai Kong
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Patent number: 7623246Abstract: Disclosed is an optical sensing device, which comprises a light source emitting a light; a beam splitter; an SPR sensor unit comprising a sensing surface; and a detecting mechanism; and a converting unit converting the first beam and the second beam from the optical device into a two-dimensional interference fringe pattern. From the above-mentioned configuration, an extra phase shift of a detection beam in SPR phase measurement is obtained. The differential measurement approach has shown to achieve a sensitivity figure significantly better than the best result that can be obtained from the prior art in the field of the measurement based on an SPR sensor.Type: GrantFiled: March 11, 2008Date of Patent: November 24, 2009Assignee: The Chinese University of Hong KongInventors: Ho Pui Ho, Chi Lok Wong, Shu Yuen Wu, Wing Cheung Law, Chinlon Lin, Siu Kai Kong
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Publication number: 20090086210Abstract: Disclosed is an optical sensing device including a source unit providing a beam of light with continuously modulated phase retardation between p- and s-polarization components of the light by employing a LCM; a reference unit receiving a first part of the light to provide a reference signal; a SPR sensing unit receiving a second part of the light to induce a phase retardation change between the p- and s-polarization components due to SPR associated with a sample; a probe unit receiving the light after SPR to provide a probe signal; and a detection unit connected to the reference unit and the probe unit to detect characteristics of the sample by comparing the reference signal with the probe signal. By using active phase modulation technologies and differential phase measurement, it is possible to fulfill chemical and biological detection.Type: ApplicationFiled: August 4, 2008Publication date: April 2, 2009Applicant: The Chinese University of Hong KongInventors: Ho Pui Ho, Shu Yuen Wu, Chinlon Lin, Siu Kai Kong
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Publication number: 20080304072Abstract: Disclosed is an optical sensing device, which comprises a light source emitting a light; a beam splitter; an SPR sensor unit comprising a sensing surface; and a detecting mechanism; and a converting unit converting the first beam and the second beam from the optical device into a two-dimensional interference fringe pattern. From the above-mentioned configuration, an extra phase shift of a detection beam in SPR phase measurement is obtained. The differential measurement approach has shown to achieve a sensitivity figure significantly better than the best result that can be obtained from the prior art in the field of the measurement based on an SPR sensor.Type: ApplicationFiled: March 11, 2008Publication date: December 11, 2008Applicant: The Chinese University of Hong KongInventors: Ho Pui Ho, Chi Lok Wong, Shu Yuen Wu, Wing Cheung Law, Chinlon Lin, Sui Kai Kong
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Patent number: 7407817Abstract: Disclosed is an optical sensing device including a source unit providing a beam of light with continuously modulated phase retardation between p- and s-polarization components of the light by employing a LCM; a reference unit receiving a first part of the light to provide a reference signal; a SPR sensing unit receiving a second part of the light to induce a phase retardation change between the p- and s-polarization components due to SPR associated with a sample; a probe unit receiving the light after SPR to provide a probe signal; and a detection unit connected to the reference unit and the probe unit to detect characteristics of the sample by comparing the reference signal with the probe signal. By using active phase modulation technologies and differential phase measurement, it is possible to fulfill chemical and biological detection.Type: GrantFiled: January 19, 2006Date of Patent: August 5, 2008Assignee: The Chinese University of Hong KongInventors: Ho Pui Ho, Shu Yuen Wu, Chinlon Lin, Siu Kai Kong
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Patent number: 7365855Abstract: Disclosed is an optical sensing device, which comprises a light source emitting a light; a beam splitter; an SPR sensor unit comprising a sensing surface; and a detecting mechanism; and a converting unit converting the first beam and the second beam from the optical device into a two-dimensional interference fringe pattern. From the above-mentioned configuration, an extra phase shift of a detection beam in SPR phase measurement is obtained. The differential measurement approach has shown to achieve a sensitivity figure significantly better than the best result that can be obtained from the prior art in the field of the measurement based on an SPR sensor.Type: GrantFiled: July 8, 2005Date of Patent: April 29, 2008Assignee: The Chinese University of Hong KongInventors: Ho Pui Ho, Chi Lok Wong, Shu Yuen Wu, Wing Cheung Law, Chinlon Lin, Siu Kai Kong
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Publication number: 20070166763Abstract: Disclosed is an optical sensing device including a source unit providing a beam of light with continuously modulated phase retardation between p- and s-polarization components of the light by employing a LCM; a reference unit receiving a first part of the light to provide a reference signal; a SPR sensing unit receiving a second part of the light to induce a phase retardation change between the p- and s-polarization components due to SPR associated with a sample; a probe unit receiving the light after SPR to provide a probe signal; and a detection unit connected to the reference unit and the probe unit to detect characteristics of the sample by comparing the reference signal with the probe signal. By using active phase modulation technologies and differential phase measurement, it is possible to fulfill chemical and biological detection.Type: ApplicationFiled: January 19, 2006Publication date: July 19, 2007Applicant: The Chinese University of Hong KongInventors: Ho Ho, Shu Wu, Chinlon Lin, Siu Kong
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Publication number: 20070008546Abstract: Disclosed is an optical sensing device, which comprises a light source emitting a light; a beam splitter; an SPR sensor unit comprising a sensing surface; and a detecting mechanism; and a converting unit converting the first beam and the second beam from the optical device into a two-dimensional interference fringe pattern. From the above-mentioned configuration, an extra phase shift of a detection beam in SPR phase measurement is obtained. The differential measurement approach has shown to achieve a sensitivity figure significantly better than the best result that can be obtained from the prior art in the field of the measurement based on an SPR sensor.Type: ApplicationFiled: July 8, 2005Publication date: January 11, 2007Applicant: The Chinese University of Hong KongInventors: Ho Ho, Chi Wong, Shu Wu, Wing Law, Chinlon Lin, Sui Kong
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Patent number: 7085039Abstract: A hybrid Raman-EDFA provides gain equalization over the C-band and L-band. The hybrid Raman-EDFA includes a Raman section producing a Raman gain and an EDFA section producing an EDFA gain complementing the Raman gain. The EDFA section preferably includes a highly inverted, single-stage EDFA to produce the complementing EDFA gain shape. One embodiment of the EDFA section includes a high return loss termination located after the erbium fiber to receive unabsorbed pump power. Multiple hybrid Raman-EDFAs can be connected in an amplifier chain in a transmission system. The transmission system preferably provides a dispersion map including regular composite fiber spans followed by at least one compensating span of negative dispersion fibers. The Raman sections of the hybrid Raman-EDFAs are preferably coupled to negative dispersion fiber in the transmission system.Type: GrantFiled: March 14, 2003Date of Patent: August 1, 2006Assignee: Tyco Telecommunications (US) Inc.Inventors: Dmitri Foursa, Morten Nissov, Alexei N. Pilipetskii, Michael A. Mills, Chinlon Lin, Bo Pedersen
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Patent number: 6731381Abstract: A test apparatus includes a broadband noise source, a test station, and a spectrum analyzer. A method using the test apparatus to measure the spectral gain of an erbium doped fiber amplifier (EDFA) under test includes steps of providing an optical signal from a broadband noise source to an input of the EDFA under test, measuring a power at a test wavelength at an output of the EDFA under test, adjusting the test wavelength, and repeating the steps of measuring and adjusting for a predetermined number of times.Type: GrantFiled: February 27, 2001Date of Patent: May 4, 2004Assignee: Tyco Telecommunications (US) Inc.Inventors: Chinlon Lin, Michael Mills, Morten Nissov
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Patent number: 6697575Abstract: A method of increasing capacity on a long-haul undersea cable system having at least one optical fiber, said method comprising interleaving counter-propagating forward-propagating and backward-propagating signals in forward and backward channels on a common optical fiber, wherein the wavelength offset between said forward and backward channels is typically half of the channel spacing of co-propagating signals.Type: GrantFiled: June 30, 2000Date of Patent: February 24, 2004Assignee: Tyco Telecommunications (US) Inc.Inventors: Anhui Liang, Chinlon Lin, Bo Pedersen
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Publication number: 20030179440Abstract: A hybrid Raman-EDFA provides gain equalization over the C-band and L-band. The hybrid Raman-EDFA includes a Raman section producing a Raman gain and an EDFA section producing an EDFA gain complimenting the Raman gain. The EDFA section preferably includes a highly inverted, single-stage EDFA to produce the complimenting EDFA gain shape. One embodiment of the EDFA section includes a high return loss termination located after the erbium fiber to receive unabsorbed pump power. Multiple hybrid Raman-EDFAs can be connected in an amplifier chain in a transmission system. The transmission system preferably provides a dispersion map including regular composite fiber spans followed by at least one compensating span of negative dispersion fibers. The Raman sections of the hybrid Raman-EDFAs are preferably coupled to negative dispersion fiber in the transmission system.Type: ApplicationFiled: March 14, 2003Publication date: September 25, 2003Inventors: Dmitri Foursa, Morten Nissov, Alexei N. Pilipetskii, Michael A. Mills, Chinlon Lin, Bo Pedersen
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Patent number: 6577424Abstract: A dispersion compensator provides dispersion compensation to a WDM optical signal having a plurality of channels located at different wavelengths and traveling in an optical transmission path. The dispersion compensator includes an optical splitter adapted to receive the WDM optical signal. The optical splitter has first and second output ports such that a subset of the plurality of channels are directed along the first output port and remaining ones of the plurality of channels are directed along the second output port. A dispersion compensating element is coupled to the first output port and a multiplexing element having a first input port is coupled to second output port of the optical splitter. The multiplexing element also has a second input port coupled to the dispersion compensating element and an output port on which the subset of channels and the remaining ones of the channels are recombined.Type: GrantFiled: January 10, 2000Date of Patent: June 10, 2003Assignee: Tyco Telecommunications (US) Inc.Inventor: Chinlon Lin
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Patent number: 6567577Abstract: A WDM optical communication system is provided that includes a transmitter and a receiver. An optical fiber transmission path couples the transmitter to the receiver. The transmission path includes at least one repeater having an optical amplifier located therein. A dispersion compensator is disposed at an intermediate point along the transmission path. The intermediate point is located outside of the repeater. The compensator includes a wavelength routing device for dividing a signal having a prescribed bandwidth into a plurality of distinct sub-bands. A plurality of output paths is provided for respectively receiving the plurality of distinct sub-bands. The dispersion compensator also includes a dispersion compensating optical element coupled to each of the output paths. Each dispersion compensating optical element substantially compensates for dispersion at a prescribed wavelength within the bandpass of its respective sub-band.Type: GrantFiled: July 14, 1998Date of Patent: May 20, 2003Assignee: Tyco Telecommunications (US) Inc.Inventors: Stuart M. Abbott, Neal Bergano, Stephen G. Evangelides, Ekaterina Golovchenko, George Harvey, Franklin W. Kerfoot, III, Chinlon Lin, Bo Pedersen
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Publication number: 20020196491Abstract: A passive optical network in which a plurality of wavelength division multiplexed optical signals are exchanged between terminals. At an upstream node such, for example, as a central office, a first plurality of coarsely wavelength division (CWDM) multiplexed optical signals are launched onto or otherwise supplied to a first optical fiber, which fiber may carry optical signals in one or both of the upstream and downstream directions. The downstream or first plurality of coarsely wavelength division multiplexed optical signals, carried via the first optical fiber, are supplied to and distributed by a passive optical node to respective optical network terminals.Type: ApplicationFiled: June 25, 2001Publication date: December 26, 2002Inventors: Kung Li Deng, Chun-Kit Chan, Chinlon Lin
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Publication number: 20020118440Abstract: A test apparatus includes a broadband noise source, a test station, and a spectrum analyzer. A method using the test apparatus to measure the spectral gain of an erbium doped fiber amplifier (EDFA) under test includes steps of providing an optical signal from a broadband noise source to an input of the EDFA under test, measuring a power at a test wavelength at an output of the EDFA under test, adjusting the test wavelength, and repeating the steps of measuring and adjusting for a predetermined number of times.Type: ApplicationFiled: February 27, 2001Publication date: August 29, 2002Inventors: Chinlon Lin, Michael Mills, Morten Nissov
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Patent number: 6385366Abstract: A method of operating a hybrid fiber coax transmission system to provide Fiber to the Home Office (FTTHO) functionality comprises directing, via a fiber portion of the transmission system, first wavelength division multiplexed (WDM) optical signals corresponding to a first category of subscriber service. The first wavelength division multiplexed WDM optical signals, which are within a first wavelength band, originate at a primary hub or headend and are sent to a plurality of fiber nodes where they are converted to respective electrical signals. The converted electrical signals are transmitted, via a coaxial cable portion of the transmission system, to the homes of individual subscribers. The method further comprises a step of exchanging, via a fiber portion of the transmission system, demultiplexed second WDM optical signals corresponding to fiber-to-the-home office (FTTHO) service between a headend and the home of at least one of the individual subscribers.Type: GrantFiled: August 31, 2000Date of Patent: May 7, 2002Assignee: Jedai Broadband Networks Inc.Inventor: Chinlon Lin
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Publication number: 20010028758Abstract: A WDM optical communication system is provided that includes a transmitter and a receiver. An optical fiber transmission path couples the transmitter to the receiver. The transmission path includes at least one repeater having an optical amplifier located therein. A dispersion compensator is disposed at an intermediate point along the transmission path. The intermediate point is located outside of the repeater. The compensator includes a wavelength routing device for dividing a signal having a prescribed bandwidth into a plurality of distinct sub-bands. A plurality of output paths is provided for respectively receiving the plurality of distinct sub-bands. The dispersion compensator also includes a dispersion compensating optical element coupled to each of the output paths. Each dispersion compensating optical element substantially compensates for dispersion at a prescribed wavelength within the bandpass of its respective sub-band.Type: ApplicationFiled: February 8, 2001Publication date: October 11, 2001Inventors: Stuart M. Abbott, Neal Bergano, Stephen G. Evangelides, Ekaterina Golovchenko, George Harvey, Franklin W. Kerfoot, Chinlon Lin, Bo Pedersen
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Publication number: 20010003549Abstract: A WDM optical communication system is provided that includes a transmitter and a receiver. An optical fiber transmission path couples the transmitter to the receiver. The transmission path includes at least one repeater having an optical amplifier located therein. A dispersion compensator is disposed at an intermediate point along the transmission path. The intermediate point is located outside of the repeater. The compensator includes a wavelength routing device for dividing a signal having a prescribed bandwidth into a plurality of distinct sub-bands. A plurality of output paths is provided for respectively receiving the plurality of distinct sub-bands. The dispersion compensator also includes a dispersion compensating optical element coupled to each of the output paths. Each dispersion compensating optical element substantially compensates for dispersion at a prescribed wavelength within the bandpass of its respective sub-band.Type: ApplicationFiled: July 14, 1998Publication date: June 14, 2001Inventors: STUART M. ABBOTT, NEAL S. BERGANO, STEPHEN G. EVANGELIDES, EKATERINA GOLOVCHENKO, GEORGE HARVEY, FRANKLIN W. KERFOOT, CHINLON LIN, BO PEDERSEN
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Patent number: 5392154Abstract: In a multiwavelength lightwave communications system automatic self-power regulation on a channel-by-channel basis is achieved with a cascade of multiwavelength amplifier modules (200), wherein each multiwavelength amplifier module in the cascade includes a plurality of pump-shared parallel fiber amplifiers (208) operated in gain-saturation and connected between an optical demultiplexer (203) and multiplexer (209). An optional first gain stage (202) improves performance with higher optical signal-to-noise ratio. By self-regulating the power in each channel, the communications system is scalable, allowing the system to grow without deleterious effects due to power spread.Type: GrantFiled: March 30, 1994Date of Patent: February 21, 1995Assignee: Bell Communications Research, Inc.Inventors: Gee-Kung Chang, Lars E. Eskildsen, Evan L. Goldstein, Muhammed Z. Iqbal, Chinlon Lin