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公开(公告)号:US10061083B2
公开(公告)日:2018-08-28
申请号:US15167459
申请日:2016-05-27
Applicant: Lumentum Operations LLC
Inventor: Sheldon McLaughlin
IPC: G01J3/28 , G02B6/293 , G01J3/02 , G01J3/18 , G01J3/22 , G02B5/18 , G02B5/12 , G02B6/35 , G02B17/08
CPC classification number: G02B6/29313 , G01J3/02 , G01J3/0205 , G01J3/0208 , G01J3/021 , G01J3/0243 , G01J3/0256 , G01J3/0291 , G01J3/1804 , G01J3/22 , G02B5/12 , G02B5/1809 , G02B5/1814 , G02B5/1866 , G02B6/2931 , G02B6/29311 , G02B6/2938 , G02B6/354 , G02B17/0856 , G02B2005/1804
Abstract: A compact wavelength dispersing device and a wavelength selective optical switch based on the wavelength dispersing device is described. The wavelength dispersing device has a folding mirror that folds the optical path at least three times. A focal length of a focusing coupler of the device is reduced and the NA is increased, while the increased optical aberrations are mitigated by using an optional coma-compensating wedge. A double-pass arrangement for a transmission diffraction grating allows further focal length and overall size reduction due to increased angular dispersion.
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公开(公告)号:US09250391B2
公开(公告)日:2016-02-02
申请号:US14733378
申请日:2015-06-08
Applicant: Lumentum Operations LLC
Inventor: Sheldon McLaughlin , Peter David Roorda , Paul Colbourne , Barrie Keyworth
CPC classification number: G02B6/3534 , B81B7/04 , G02B6/3512 , G02B6/3518 , G02B6/3546 , G02B6/3556 , G02B26/0833 , G02B27/106 , G02B27/1086 , G02B27/1093 , G02B27/42
Abstract: A multicast optical switch uses a diffractive bulk optical element, which splits at least one input optical beam into sub-beams, which freely propagate in a medium towards an array of directors, such as MEMS switches, for directing the sub-beams to output ports. Freely propagating optical beams can cross each other without introducing mutual optical loss. The amount of crosstalk is limited by scattering in the optical medium, which can be made virtually non-existent. Therefore, the number of the crossover connections, and consequently the number of inputs and outputs of a multicast optical switch, can be increased substantially without a loss or a crosstalk penalty.
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公开(公告)号:US10923875B2
公开(公告)日:2021-02-16
申请号:US15889736
申请日:2018-02-06
Applicant: Lumentum Operations LLC
Inventor: Jiamin Zheng , Barrie P. Keyworth , Paul Colbourne , Dhanorm Plumwongrot , Gareth Jones , Sheldon McLaughlin
IPC: G02B26/08 , G02B26/10 , G02B26/12 , H01S3/067 , H01S3/00 , H01S3/23 , H01S3/081 , H01S3/10 , G02B27/09 , H01S3/13 , H01S3/02 , H01S3/16 , H01S3/094 , H01S3/063 , H01S3/0941
Abstract: An optical device may include a package having a first port for receiving signal light, a source for providing pump light, a combiner for combining the signal light and the pump light into combined light, a second port for sending the combined light, a third port for receiving amplified light, and a free-space optical system for filtering amplified signal light from the amplified light, and a fourth port for sending the amplified signal light. The free-space optical system may include beam shaping optics that enlarge a beam size of the amplified light prior to the filtering.
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公开(公告)号:US20190006816A1
公开(公告)日:2019-01-03
申请号:US16100769
申请日:2018-08-10
Applicant: Lumentum Operations LLC
Inventor: Wei Xiong , Michael C. Larson , Paul Colbourne , Sheldon McLaughlin
IPC: H01S3/13 , H01S5/14 , H01S5/0687 , H01S3/106 , H01S3/08 , H01S3/10 , H01S3/081 , H01S3/00 , H01S5/00
CPC classification number: H01S3/1305 , H01S3/005 , H01S3/08027 , H01S3/08036 , H01S3/0811 , H01S3/10061 , H01S3/1062 , H01S3/1303 , H01S5/005 , H01S5/0687 , H01S5/141 , H04B10/572
Abstract: A device may include a first photodetector to generate a first current based on an optical power of an optical beam. The device may include a beam splitter to split a portion of the optical beam into a first beam and a second beam. The device may include a wavelength filter to filter the first beam and the second beam. The wavelength filter may filter the second beam differently than the first beam based on a difference between an optical path length of the first beam and an optical path length of the second beam through the wavelength filter. The device may include second and third photodetectors to respectively receive, after the wavelength filter, the first beam and the second beam and to generate respective second currents.
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公开(公告)号:US10050405B2
公开(公告)日:2018-08-14
申请号:US15132797
申请日:2016-04-19
Applicant: Lumentum Operations LLC
Inventor: Wei Xiong , Michael C. Larson , Paul Colbourne , Sheldon McLaughlin
IPC: H01S3/10 , H01S3/00 , H01S3/13 , H01S3/08 , H01S3/081 , H01S3/106 , H01S5/14 , H01S5/0687 , H01S5/00
Abstract: A device may include a first photodetector to generate a first current based on an optical power of an optical beam. The device may include a beam splitter to split a portion of the optical beam into a first beam and a second beam. The device may include a wavelength filter to filter the first beam and the second beam. The wavelength filter may filter the second beam differently than the first beam based on a difference between an optical path length of the first beam and an optical path length of the second beam through the wavelength filter. The device may include second and third photodetectors to respectively receive, after the wavelength filter, the first beam and the second beam and to generate respective second currents.
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公开(公告)号:US09563021B2
公开(公告)日:2017-02-07
申请号:US14660367
申请日:2015-03-17
Applicant: Lumentum Operations LLC
Inventor: Abdul Jaleel K. Moidu , Sheldon McLaughlin , Nenad Duricic
IPC: G02B6/35
CPC classification number: G02B6/3582 , G02B6/3584 , G02B6/359 , H01L2224/48091 , H01L2924/15192 , H01L2924/16195 , H01L2924/00014
Abstract: An optical switching device including an optical switching engine may be packaged by omitting an optical bench and disposing optical elements directly on a base of a housing of the optical switching device. The optical switching engine may be disposed on a ceramic portion of the base, and thermally matched to the ceramic base. The base may be reinforced by the housing walls and optional internal rigidity ribs. The optical elements may be thermally matched to the base, and the lid may be strain relieved by thinning lid edges. The housing may be mounted to an external chassis using soft grummets.
Abstract translation: 可以通过省略光学台并将光学元件直接设置在光学开关装置的壳体的基座上来封装包括光学开关引擎的光学开关装置。 光学开关引擎可以设置在基座的陶瓷部分上,并且与陶瓷基座热匹配。 基座可以通过外壳壁和可选的内部刚性肋加强。 光学元件可以与基座热匹配,并且盖子可以通过使盖子边缘变薄来减轻应变。 外壳可以使用软格子安装到外部机箱。
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公开(公告)号:US11489311B2
公开(公告)日:2022-11-01
申请号:US16692984
申请日:2019-11-22
Applicant: Lumentum Operations LLC
Inventor: Guansan Chen , Sheldon McLaughlin
Abstract: An optical amplifier may include an optical fiber to propagate a forward optical signal in a path of propagation of the optical amplifier. The optical fiber may have an input end face that is angled non-perpendicular to the path of propagation. The optical amplifier may include an optical component, in optical communication with the input end face of the optical fiber, to direct a backward optical emission away from the path of propagation.
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公开(公告)号:US11448829B2
公开(公告)日:2022-09-20
申请号:US16947855
申请日:2020-08-20
Applicant: Lumentum Operations LLC
Inventor: Sheldon McLaughlin
Abstract: An M×N wavelength selective switch (WSS), may comprise a common port fiber array unit (FAU) configured to emit optical beams with a lateral offset and a beam steering device configured to direct optical beams with an angular offset to add/drop port optical fibers of an add/drop port FAU. The common port FAU may comprise a first set of common port optical fibers arranged in a first column of the common port FAU and a second set of common port optical fibers arranged in a second column of the common port FAU. The second column of the common port FAU may be laterally offset from the first column of the common port FAU. The beam steering device may be configured to selectively direct, in two dimensions, the optical beams with the angular offset to the add/drop port optical fibers.
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公开(公告)号:US10135559B1
公开(公告)日:2018-11-20
申请号:US15685526
申请日:2017-08-24
Applicant: Lumentum Operations LLC
Inventor: Paul Colbourne , Sheldon McLaughlin
CPC classification number: H04J14/0212 , G02B6/272 , H04Q11/0005 , H04Q2011/0007 , H04Q2011/0032 , H04Q2011/0052
Abstract: A wavelength selective switch (WSS) may include a first set of ports, each to launch a respective beam of a first set of beams, wherein the first set of beams is provided to a first position on a focal plane, and wherein a first set of wavelength channel sub-beams, included in a beam of the first set of beams, is to be incident on a particular section of a switching array. The WSS may include a second set of ports, each to launch a respective beam of a second set of beams, wherein the second set of beams is provided to a second position on the focal plane, wherein the second position is different from the first position, and wherein a second set of wavelength channel sub-beams, included in a beam of the second set of beams, is to be incident on the particular section of the switching array.
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公开(公告)号:US20170131616A1
公开(公告)日:2017-05-11
申请号:US15413081
申请日:2017-01-23
Applicant: Lumentum Operations LLC
Inventor: Josh P. KEMP , Sheldon McLaughlin , Thomas Friessnegg
CPC classification number: G02F1/31 , G02B6/29313 , G02B6/29395 , G02B6/3534 , G02B6/3586 , G02F1/0121 , G02F1/13363 , G02F2201/307 , G02F2203/05
Abstract: A method and a controller for operating an array of variable optical retarders are disclosed. Neighboring pixels of the array of variable optical retarders are driven with disordered temporal bit sequences. An optical beam illuminating the pixels tends to integrate time-domain modulation caused by individual pixels driven in a non-coordinated or disordered fashion, which reduces the overall time-domain modulation amplitude of the optical beam.
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