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11.发明公开公开(公告)号：US20240313497A1
公开(公告)日：2024-09-19
申请号：US18122188
申请日：2023-03-16
Applicant: II-VI Delaware, Inc.
Inventor： Ian Peter McClean , Martin R. Williams
IPC: H01S3/067
CPC classification number: H01S3/0677 , H01S3/06758 , H01S2301/04
Abstract: A cascaded arrangement of optical amplifying stages is used to provide efficient amplification of signals within an extended wavelength range in a relatively compact configuration. A wavelength selective filter is positioned at the output of a first amplifier stage and used to direct amplified signals within a longer wavelength range (e.g., L-band) into a second amplifier stage, thus forming a cascaded configuration of the first and second amplifier stages. The second stage imparts an additional level of gain to the signals within the longer wavelength range, and an optical combiner may be used to direct both sets of amplified signals along a common output path.
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Patent Agency Ranking
公开(公告)号：US20240248000A1
公开(公告)日：2024-07-25
申请号：US18101231
申请日：2023-01-25
Applicant: II-VI Delaware, Inc.
Inventor： Siegfried Fleischer , Ian Peter McClean
IPC: G01M11/00 , H04B10/071
CPC classification number: G01M11/3109 , H04B10/071
Abstract: An optical time domain reflectometer (OTDR) system comprising a modified BOSA in a single module, that is in a pluggable form factor. The pluggable form factor may be a QSFP format, a QSFP28 format, or an SFP format. The modified BOSA may be operable on a substantially same transmit and receive frequency.
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公开(公告)号：US20240162675A1
公开(公告)日：2024-05-16
申请号：US17987015
申请日：2022-11-15
Applicant: II-VI Delaware, Inc.
Inventor： Ian Peter McClean , Martin R. Williams
CPC classification number: H01S3/094023 , H01S3/067 , H01S3/094042 , H01S3/1608 , H01S3/2391 , H01S2302/00
Abstract: An arrangement for generating amplified spontaneous emission (ASE) over the combination of the C-band and L-band wavelength ranges is proposed, based on a reflective topology that reduces the number of individual components (compared with separate C-band and L-band ASE sources) required to generate the broadband ASE output. A pair of ASE generators are used, where at least one of the generators is configured to include a reflective element at a termination of the included gain fiber. The inclusion of the reflective element allows for the generated emission to pass through the gain fiber twice (emulating the operation of a conventional dual-stage ASE source). A long wavelength portion of the ASE created by a first ASE generator may be used as a seed input by the remaining ASE generator of the pair to further increase the efficiency of extending the ASE along the L-band wavelength range.
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公开(公告)号：US20240068905A1
公开(公告)日：2024-02-29
申请号：US17895339
申请日：2022-08-25
Applicant: II-VI Delaware, Inc.
Inventor： Ian Peter McClean , Siegfried Fleischer
IPC: G01M11/00
CPC classification number: G01M11/3145 , G01M11/3154
Abstract: A pluggable OTDR is disclosed that is utilizes a specific architecture that separates its passive optical elements from the remaining active optical and electrical elements. The set of active elements (i.e., laser, photodetector, and control/processing electronics) can arranged in a manner similar to a small form-factor pluggable (SFP) optical transceiver and assembled within a housing that meets these requirements. The passive optics may be incorporated into a separate optical fiber pigtailed component that is attached between the active OTDR module and a fiber span under test.
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公开(公告)号：US11728613B2
公开(公告)日：2023-08-15
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 , H01S3/16 , H01S3/094 , H01S5/0239 , H01S5/50 , H01S5/04 , H01S5/40
CPC classification number: H01S3/0941 , H01S3/0675 , H01S3/06716 , H01S3/06754 , H01S3/094003 , H01S3/094053 , H01S3/1608 , H01S5/50 , H01S5/0239 , H01S5/041 , H01S5/40 , H01S5/5027
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：US11677209B2
公开(公告)日：2023-06-13
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
CPC classification number: H01S3/1305 , G01R19/16571 , H01S3/0677 , H01S3/06716 , H01S3/094003 , H01S3/10023 , H01S3/1301 , H01S3/1608 , 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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