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公开(公告)号：US11966091B2
公开(公告)日：2024-04-23
申请号：US17452173
申请日：2021-10-25
CPC分类号： G02B6/425 , G02B6/4206
摘要： A multichannel optical coupler array can include a coupler housing structure and longitudinal waveguides. At least one of the longitudinal waveguides can be a vanishing core waveguide having an inner vanishing core having a first refractive index (N-1), an outer core having a second refractive index (N-2), and an outer cladding having a third refractive index (N-3). A refractive index transition between N-1 and N-2 can have a function form N(r), where r is a transverse distance from the inner vanishing core center. The function N(r) can be a smooth function having a positive average of the second derivative or function N(r) can be a step function with at least one step approximating the smooth function. The coupler housing structure may have non-circular holes formed by convex-shaped housing structure elements.
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公开(公告)号：US20170336570A1
公开(公告)日：2017-11-23
申请号：US15612337
申请日：2017-06-02
CPC分类号： G02B6/3668 , G02B6/3636 , G02B6/3644 , G02B6/4214
摘要： The inventive high density optical packaging header apparatus, in various embodiments thereof, provides configurable, modular, and highly versatile solutions for simultaneously connecting multiple optical fibers/waveguides to optical-fiber-based electronic systems, components, and devices, and is readily usable in a variety of applications involving highly flexible and modular connection of multiple optical fibers/waveguides assembled in a header block configuration to optical-fiber-based system/component backplanes, while providing advantageous active and passive alignment features.
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公开(公告)号：US10564360B2
公开(公告)日：2020-02-18
申请号：US14677810
申请日：2015-04-02
摘要： The inventive optical fiber coupler array is capable of providing a low-loss, high-coupling coefficient interface with high accuracy and easy alignment between a plurality of optical fibers (or other optical devices) with a first channel-to-channel spacing, and an optical device having a plurality of closely-spaced waveguide interfaces with a second channel-to-channel spacing, where each end of the optical fiber coupler array is configurable to have different channel-to-channel spacing, each matched to a corresponding one of the first and second channel-to-channel spacing. The novel optical coupler array includes a plurality of waveguides (at least one of which may optionally be polarization maintaining), that comprises at least one gradually reduced vanishing core fiber, at least in part embedded within a common housing structure. Alternatively, the novel coupler array may be configured for utilization with at least one of an optical fiber amplifier and an optical fiber laser. Advantageously, the refractive indices and sizes of both inner and outer core, and/or other characteristics of vanishing core waveguides in the novel optical coupler array are optimized to reduce the back reflection for light propagating from the plurality of the optical fibers at the coupler first end to the optical device at the coupler second end, and/or vice versa.
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公开(公告)号：US20200041724A1
公开(公告)日：2020-02-06
申请号：US16600219
申请日：2019-10-11
IPC分类号： G02B6/26
摘要： An optical coupler array can include an elongated optical element having a coupler housing structure and at least one longitudinal waveguide embedded in said housing structure. The housing structure can have an outer cross sectional shape comprising a first side comprising one or more curved portions and a second side comprising one or more flat portions. The second side can be disposed at a distance from the at least one longitudinal waveguide such that waveguiding properties are preserved and not disturbed.
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公开(公告)号：US10078019B2
公开(公告)日：2018-09-18
申请号：US15612354
申请日：2017-06-02
CPC分类号： G01K11/3206 , G01N21/21
摘要： The inventive configurable chiral fiber sensor with a tip-positioned sensing element, is readily configurable for use in a variety of applications (such as applications involving pressure, temperature, and even axial twist sensing), and is particularly suitable for applications requiring highly precise and accurate sensor readings within corresponding predefined limited sensing ranges. Advantageously, the inventive configurable chiral fiber sensor with a tip-positioned sensing element, is operable to utilize a wide variety of light sources, photodetectors, and related devices for sensor interrogation.
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公开(公告)号：US20170268937A1
公开(公告)日：2017-09-21
申请号：US15612354
申请日：2017-06-02
IPC分类号： G01K11/32
CPC分类号： G01K11/3206 , G01N21/21
摘要： The inventive configurable chiral fiber sensor with a tip-positioned sensing element, is readily configurable for use in a variety of applications (such as applications involving pressure, temperature, and even axial twist sensing), and is particularly suitable for applications requiring highly precise and accurate sensor readings within corresponding predefined limited sensing ranges. Advantageously, the inventive configurable chiral fiber sensor with a tip-positioned sensing element, is operable to utilize a wide variety of light sources, photodetectors, and related devices for sensor interrogation.
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公开(公告)号：US20240219661A1
公开(公告)日：2024-07-04
申请号：US18611286
申请日：2024-03-20
IPC分类号： G02B6/42
CPC分类号： G02B6/425 , G02B6/4206
摘要： A multichannel optical coupler array can include a coupler housing structure and longitudinal waveguides. At least one of the longitudinal waveguides can be a vanishing core waveguide having an inner vanishing core having a first refractive index (N-1), an outer core having a second refractive index (N-2), and an outer cladding having a third refractive index (N-3). A refractive index transition between N-1 and N-2 can have a function form N(r), where r is a transverse distance from the inner vanishing core center. The function N(r) can be a smooth function having a positive average of the second derivative or function N(r) can be a step function with at least one step approximating the smooth function. The coupler housing structure may have non-circular holes formed by convex-shaped housing structure elements.
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公开(公告)号：US10564348B2
公开(公告)日：2020-02-18
申请号：US16159310
申请日：2018-10-12
摘要： An optical coupler array can include an elongated optical element having a coupler housing structure and at least one longitudinal waveguide embedded in said housing structure. The housing structure can have an outer cross sectional shape comprising a first side comprising one or more curved portions and a second side comprising one or more flat portions. The second side can be disposed at a distance from the at least one longitudinal waveguide such that waveguiding properties are preserved and not disturbed.
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公开(公告)号：US20170184791A1
公开(公告)日：2017-06-29
申请号：US15459730
申请日：2017-03-15
CPC分类号： G02B6/30 , G02B6/00 , G02B6/02042 , G02B6/024
摘要： A multichannel optical coupler array comprises a coupler housing structure and longitudinal waveguides. At least one of the longitudinal waveguides is a vanishing core waveguide. The coupler housing structure at a proximity to a first end has one of the following cross sectional configurations: a ring surrounding the longitudinal waveguides, or a structure with holes, at least one hole containing at least one of the longitudinal waveguides.
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公开(公告)号：US11609376B2
公开(公告)日：2023-03-21
申请号：US17183136
申请日：2021-02-23
摘要： Space division multiplexers can include adapters between multicore fibers with different core patterns and/or add-drop multiplexers for multicore fibers.
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