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公开(公告)号：US20240170909A1
公开(公告)日：2024-05-23
申请号：US17988873
申请日：2022-11-17
Applicant: II-VI Delaware, Inc.
Inventor： Ian Peter McClean , Nadhum Kadhum Zayer
CPC classification number: H01S3/094003 , H01S3/06754 , H01S3/1698
Abstract: An amplifier operable with an electrical drive signal can amplify signal light having a signal wavelength. A laser diode has an active section with input and output facets. An optical isolator is integrated with a package that includes the laser diode. The active section is configured to generate pump light in response to injection of the electrical drive signal into the active section. The pump light has a pump wavelength different from the signal wavelength. A doped fiber doped with an active dopant is in optical communication with the signal light and is in optical communication with at least a portion of the pump light from the laser diode. The pump wavelength of the pump light is configured to interact with the active dopant of the fiber and thereby amplify the signal light.
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公开(公告)号：US20240110845A1
公开(公告)日：2024-04-04
申请号：US18530940
申请日：2023-12-06
Applicant: II-VI Delaware, Inc.
Inventor： Michael J. Cahill , Ian Peter McClean
IPC: G01M11/00 , H04B10/071
CPC classification number: G01M11/3145 , G01M11/3127 , G01M11/3181 , H04B10/071
Abstract: A system for providing advanced characterization of an optical fiber span is based upon the use of a pair of optical time domain reflectometers (OTDRs), located at opposing end terminations of the span being characterized. Each OTDR performs standard reflectometry measurements and transmits the resulting OTDR trace to monitoring equipment in a typical manner. The pair of OTDR traces is thereafter combined in a particular manner (“stitched together”) to create an OTDR trace of the entire fiber span (essentially doubling the operational range of prior art OTDR measurement capabilities). The transmit portion of one OTDR may be paired with the receive portion of the other OTDR, with time-of-light measurements (or signal loss measurements) used to determine optical path length and/or optical signal loss of the span. Using a multi-wavelength light source in the paired transmit/receive arrangement allows for a characterization of chromatic dispersion of the span.
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公开(公告)号：US12132290B2
公开(公告)日：2024-10-29
申请号：US17246666
申请日：2021-05-02
Applicant: II-VI Delaware, Inc
Inventor： Ian Peter McClean , Nadhum Kadhum Zayer , Martin Richard Williams
IPC: H01S3/094 , H01S3/067 , H01S3/0941 , H01S3/16 , H01S5/028
CPC classification number: H01S3/094003 , H01S3/06716 , H01S3/0675 , H01S3/06766 , H01S3/0941 , H01S3/1608 , H01S5/0287
Abstract: A dual output laser diode may include first and second end facets and an active section. The first and second end facets have low reflectivity. The active section is positioned between the first end facet and the second end facet. The active section is configured to generate light that propagates toward each of the first and second end facets. The first end facet is configured to transmit a majority of the light that reaches the first end facet through the first end facet. The second end facet is configured to transmit a majority of the light that reaches the second end facet through the second end facet.
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公开(公告)号：US20220239052A1
公开(公告)日：2022-07-28
申请号：US17157171
申请日：2021-01-25
Applicant: II-VI Delaware, Inc
Inventor： Ian Peter McClean , Nadhum Kadhum ZAYER , Martin Richard WILLIAMS
IPC: H01S3/0941 , H01S3/067 , H01S3/094 , H01S3/16
Abstract: An amplifier operable with an electric drive signal can amplify signal light having a signal wavelength. A laser diode has an active section with input and output facets. The facets are in optical communication with the signal light and are configured to pass the signal light through the laser diode. The active section is configured to generate pump light in response to injection of the electrical drive signal into the active section. The pump light has a pump wavelength different from the signal wavelength. A doped fiber doped with an active dopant is in optical communication with the signal light and is in optical communication with at least a portion of the pump light from the laser diode. The pump wavelength of the pump light is configured to interact with the active dopant of the fiber and thereby amplify the signal light.
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公开(公告)号：US20210184420A1
公开(公告)日：2021-06-17
申请号：US16903246
申请日：2020-06-16
Applicant: II-VI DELAWARE, INC.
Inventor： Zhiqian Zhu , Ian Peter McClean , Yongjun Fu , Yongshi Gu
Abstract: An EDFA may include an input photodiode configured to generate a control signal based on an input signal. The EDFA may include a blind stage configured to generate an amplified signal based on the control signal and the input signal. The EDFA may include a non-blind stage configured to generate an output signal based on the amplified signal within the blind stage, the control signal, and a feedback signal. The EDFA may include a filter configured to generate a filtered signal based on the output signal. The EDFA may include an output photodiode configured to generate the feedback signal based on the filtered signal. The EDFA may include an alarm device. A signal within the non-blind stage may be generated based on the feedback signal and the control signal. The alarm device may be configured to generate an alarm signal when the signal exceeds a threshold value.
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Patent Agency Ranking
公开(公告)号：US20240385079A1
公开(公告)日：2024-11-21
申请号：US18202479
申请日：2023-05-26
Applicant: II-VI Delaware, Inc.
Inventor： Ian Peter McClean , Sigfried Fleischer , Vincent Ouyang
IPC: G01M11/00
Abstract: A circulator cable configured to couple an optical time domain reflectometer (OTDR) to an optical fiber span under test is provided. The circulator cable includes a bandpass optical filter configured to be coupled to an optical input port of the OTDR; and a directional optical coupling device coupled to the bandpass optical filter and an optical output port of the OTDR and configured to direct propagation of an optical probe signal generated by the OTDR from the optical output port toward the optical fiber span under test and direct reflections attributed to the optical probe signal from the optical fiber span under test into the bandpass pass optical filter.
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公开(公告)号：US20230352898A1
公开(公告)日：2023-11-02
申请号：US18344389
申请日：2023-06-29
Applicant: II-VI Delaware, Inc
Inventor： Ian Peter McClean , Nadhum Kadhum ZAYER , Martin Richard WILLIAMS
IPC: H01S3/0941 , H01S3/067 , H01S3/16 , H01S3/094 , H01S5/50
CPC classification number: H01S3/0941 , H01S3/06754 , H01S3/0675 , H01S3/1608 , H01S3/094053 , H01S3/06716 , H01S3/094003 , H01S5/50 , H01S5/0239
Abstract: An amplifier operable with an electric drive signal can amplify signal light having a signal wavelength. A laser diode has an active section with input and output facets. The facets are in optical communication with the signal light and are configured to pass the signal light through the laser diode. The active section is configured to generate pump light in response to injection of the electrical drive signal into the active section. The pump light has a pump wavelength different from the signal wavelength. A doped fiber doped with an active dopant is in optical communication with the signal light and is in optical communication with at least a portion of the pump light from the laser diode. The pump wavelength of the pump light is configured to interact with the active dopant of the fiber and thereby amplify the signal light.
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公开(公告)号：US11885707B2
公开(公告)日：2024-01-30
申请号：US17528317
申请日：2021-11-17
Applicant: II-VI Delaware, Inc.
Inventor： Michael J. Cahill , Ian Peter McClean
IPC: G01M11/00 , H04B10/071
CPC classification number: G01M11/3145 , G01M11/3127 , G01M11/3181 , H04B10/071
Abstract: A system for providing advanced characterization of an optical fiber span is based upon the use of a pair of optical time domain reflectometers (OTDRs), located at opposing end terminations of the span being characterized. Each OTDR performs standard reflectometry measurements and transmits the resulting OTDR trace to monitoring equipment in a typical manner. The pair of OTDR traces is thereafter combined in a particular manner (“stitched together”) to create an OTDR trace of the entire fiber span (essentially doubling the operational range of prior art OTDR measurement capabilities). The transmit portion of one OTDR may be paired with the receive portion of the other OTDR, with time-of-light measurements (or signal loss measurements) used to determine optical path length and/or optical signal loss of the span. Using a multi-wavelength light source in the paired transmit/receive arrangement allows for a characterization of chromatic dispersion of the span.
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公开(公告)号：US20230361525A1
公开(公告)日：2023-11-09
申请号：US18311379
申请日：2023-05-03
Applicant: II-VI Delaware, Inc.
Inventor： Zhiqian ZHU , Ian Peter McClean , Yongjun FU , Yongshi GU
CPC classification number: H01S3/1305 , G01R19/16571 , H01S3/06716 , H01S3/1608 , H01S3/10023 , H01S3/1301 , H01S3/094003 , H01S3/0677 , H01S2301/02
Abstract: An EDFA may include an input photodiode configured to generate a control signal based on an input signal. The EDFA may include a blind stage configured to generate an amplified signal based on the control signal and the input signal. The EDFA may include a non-blind stage configured to generate an output signal based on the amplified signal within the blind stage, the control signal, and a feedback signal. The EDFA may include a filter configured to generate a filtered signal based on the output signal. The EDFA may include an output photodiode configured to generate the feedback signal based on the filtered signal. The EDFA may include an alarm device. A signal within the non-blind stage may be generated based on the feedback signal and the control signal. The alarm device may be configured to generate an alarm signal when the signal exceeds a threshold value.
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公开(公告)号：US20230152183A1
公开(公告)日：2023-05-18
申请号：US17528317
申请日：2021-11-17
Applicant: II-VI Delaware, Inc.
Inventor： Michael J. Cahill , Ian Peter McClean
IPC: G01M11/00
CPC classification number: G01M11/3127
Abstract: A system for providing advanced characterization of an optical fiber span is based upon the use of a pair of optical time domain reflectometers (OTDRs), located at opposing end terminations of the span being characterized. Each OTDR performs standard reflectometry measurements and transmits the resulting OTDR trace to monitoring equipment in a typical manner. The pair of OTDR traces is thereafter combined in a particular manner (“stitched together”) to create an OTDR trace of the entire fiber span (essentially doubling the operational range of prior art OTDR measurement capabilities). The transmit portion of one OTDR may be paired with the receive portion of the other OTDR, with time-of-light measurements (or signal loss measurements) used to determine optical path length and/or optical signal loss of the span. Using a multi-wavelength light source in the paired transmit/receive arrangement allows for a characterization of chromatic dispersion of the span.
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