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91. 发明申请

WO2002069005A1 WAVEGUIDE FIBER FOR DISPERSION AND SLOPE COMPENSATION 审中-公开
标题翻译：波纹纤维用于分散和斜率补偿
公开(公告)号：WO2002069005A1
公开(公告)日：2002-09-06
申请号：PCT/US2002/000874
申请日：2002-01-09
申请人： CORNING INCORPORATED
发明人： LI, Ming-Jun , NOLAN, Daniel, A. , QI, Gang
IPC分类号： G02B6/16
CPC分类号： G02B6/02261 , G02B6/02009 , G02B6/0228 , G02B6/03611 , G02B6/03644 , G02B6/03666 , H04B10/2525
摘要： Disclosed is a total dispersion and total dispersion slope compensating optical waveguide fiber. The refractive index profile of the compensating waveguide fiber includes a core region having a central segment (4) and two surrounding annular segments (6, 8). In an embodiment of the compensating waveguide fiber, a first clad (10) layer adjacent the core region has a refractive index lower than that of a second clad layer (12) adjacent the first clad layer. The optical waveguide fiber in accord with the invention has negative total dispersion and negative total dispersion slope over the operating window of the fiber to be compensated and a ratio of total dispersion to total dispersion slope in the range of 40nm to 60nm at a wavelength of 1550nm. The invention includes a compensated optical waveguide fiber span which includes a high performance waveguide fiber and a compensating waveguide fiber in accord with the invention.
摘要翻译：公开了总色散和总色散斜率补偿光波导光纤。补偿波导光纤的折射率分布包括具有中心段（4）和两个环绕环形段（6,8）的芯区域。在补偿波导光纤的一个实施例中，邻近芯部区域的第一包层（10）的折射率低于与第一覆盖层相邻的第二覆盖层（12）的折射率。根据本发明的光波导光纤在待补偿的光纤的操作窗口上具有负的总色散和负的总色散斜率，并且在波长1550nm处的总色散与总色散斜率在40nm至60nm范围内的比率。本发明包括补偿光波导，其包括符合本发明的高性能波导光纤和补偿波导光纤。

92. 发明申请

WO1997026221A1 OPTICAL FIBEROF MODULATED SPIN FOR REDUCED POLARISATION MODE DISPERSION AS WELL AS PROCESS AND APPARATUS FOR ITS MANUFACTURE 审中-公开
标题翻译：用于减少极化模式分散的光纤光纤调制旋钮及其制造方法
公开(公告)号：WO1997026221A1
公开(公告)日：1997-07-24
申请号：PCT/US1997000605
申请日：1997-01-21
申请人： CORNING INCORPORATED
发明人： CORNING INCORPORATED , HENDERSON, Danny, L. , LI, Ming-Jun , NOLAN, Daniel, A. , WASHBURN, Glenda, R.
IPC分类号： C03B37/027
CPC分类号： G02B6/02285 , C03B37/027 , C03B37/02745 , C03B37/03 , C03B37/032 , C03B2203/06 , C03B2203/18 , C03B2203/20 , C03B2203/36 , C03B2205/06
摘要： Disclosed are methods for reducing polarization mode dispersion (PMD) in single mode fiber by spinning the fiber during the drawing process in accordance with a spin function having sufficient harmonic content to achieve low levels of PMD for commercial fibers for which the beat lengths of the fibers, including the beat lengths of different portions of the fibers, are available and thus not readily known in advance. The spin functions disclosed take advantage of certain resonances in energy transfer between polarization modes to achieve substantial reductions in PMD for a wide range of beat lengths. Examples of suitable spin functions include frequency-modulated and amplitude-modulated sine waves.
摘要翻译：公开了通过根据具有足够的谐波含量的自旋函数在拉伸过程中纺丝纤维来实现单模光纤中的偏振模色散（PMD）的方法，以实现商业纤维的低水平的PMD，其中纤维的拍子长度，包括纤维的不同部分的节拍长度是可用的，因此不是预先容易地知道的。所公开的自旋功能利用了偏振模式之间的能量传递中的某些共振，以实现大范围的拍子长度的PMD的显着降低。合适的自旋函数的实例包括频率调制和幅度调制的正弦波。

93. 发明申请

WO2022235452A1 FREQUENCY DOMAIN METHOD AND SYSTEM FOR MEASURING MODAL BANDWIDTH, CHROMATIC DISPERSION, AND SKEW OF OPTICAL FIBERS 审中-公开
公开(公告)号：WO2022235452A1
公开(公告)日：2022-11-10
申请号：PCT/US2022/026308
申请日：2022-04-26
申请人： CORNING INCORPORATED
发明人： CHEN, Xin , LI, Kangmei , LI, Ming-Jun
IPC分类号： G01M11/00
摘要： A method including transmitting an intensity-modulated light through a mode conditioner to generate a mode-conditioned intensity-modulated light in one or a plurality of launch conditions and transmitting the mode-conditioned intensity-modulated light through a multimode optical fiber under test (PUT) to excite a plurality of modes of the PUT. The method further includes converting the mode-conditioned intensity-modulated light transmitted through the PUT into an electrical signal, measuring, based on the electrical signal, a complex transfer function CTF(f) of the FUT, and obtaining an output pulse based on the measured complex transfer function CTF(f) from one or a plurality of launch conditions and an assumed input pulse using the equation: Pout(t) = F-1(CTF(f) * F(Pin(t))). Wherein, Pout(t) is the output pulse, F-1(CTF( f ) * F(Pin(t))) is the inverse Fourier transform of the function CTF(f)* F and F(Pin(t))is the Fourier transform of the assumed input pulse. Additionally, the method includes calculating modal bandwidth of the FUT based on Pout(t).

94. 发明申请

WO2022020430A1 MULTICORE OPTICAL FIBER 审中-公开
公开(公告)号：WO2022020430A1
公开(公告)日：2022-01-27
申请号：PCT/US2021/042513
申请日：2021-07-21
申请人： CORNING INCORPORATED
发明人： BENNETT, Kevin Wallace , BICKHAM, Scott Robertson , LI, Ming-Jun , TANDON, Pushkar
IPC分类号： G02B6/02
摘要： Multicore optical fibers with low bend loss, low cross-talk, and large mode field diameters In some embodiments a circular multicore optical fiber includes a glass matrix; at least 3 cores arranged within the glass matrix, wherein any two cores have a core center to core center spacing of less than 29 microns; and a plurality of trench layers positioned between a corresponding core and the glass matrix, each trench layer having an outer radius of less than or equal to 14 microns and a trench volume of greater than 50 %D micron2; wherein the optical fiber has a mode field diameter of greater than about 8.2 microns at 1310 nm, and wherein the optical fiber has an outer diameter of less than about 130 microns.

95. 发明申请

WO2021225801A1 SYSTEM AND METHOD FOR NITROGEN DOPING OF A GLASS ARTICLE 审中-公开
公开(公告)号：WO2021225801A1
公开(公告)日：2021-11-11
申请号：PCT/US2021/028807
申请日：2021-04-23
申请人： CORNING INCORPORATED
发明人： HRDINA, Kenneth, Edward , LI, Ming-Jun , ZHANG, Haitao
IPC分类号： C03B37/014 , C03B37/018 , C03B37/029
摘要： A system and method for nitridizing a glass article includes supplying a source of a nitridizing gas including gaseous NH3 to a glass article supported within a furnace assembly and heating the glass article. In some embodiments, the system includes a handle assembly configured to support the glass article within the furnace assembly and a gas supply conduit carried by the handle and configured to supply the nitridizing gas to the glass article. In some embodiments, a method of nitridizing a glass article includes supplying the nitridizing gas such that a residence time of the nitridizing gas at temperatures greater than 500 °C corresponds to a predetermined time period. In some embodiments, a method of nitridizing a glass article includes supplying the nitridizing gas such that the glass articles is exposed to the nitridizing gas within a contact time tc.

96. 发明申请

WO2021155304A1 MODE MULTIPLEXER/DEMULTIPLEXER USING METAMATERIALS FOR OPTICAL FIBER COMMUNICATIONS 审中-公开
公开(公告)号：WO2021155304A1
公开(公告)日：2021-08-05
申请号：PCT/US2021/015920
申请日：2021-01-29
申请人： CORNING INCORPORATED , PRESIDENT AND FELLOWS OF HARVARD COLLEGE
发明人： CAPASSO, Federico , CHEN, Wei-Ting , JUNIOR, Paulo Clovis Dainese , LI, Kangmei , LI, Ming-Jun , OH, Jaewon , YANG, Jun
IPC分类号： G02B6/14 , G02B6/122 , G02B6/28 , G02B6/34 , B82Y20/00
摘要： Systems, devices, and techniques for performing wavelength division multiplexing or demultiplexing using one or more metamaterials in an optical communications systems are described. An optical device may be configured to shift one or more phase profiles of an optical signal using one or more stages of metamaterials to multiplex or demultiplex wavelengths of optical signals. The optical device may be an example of a stacked design with two or more stages of metamaterials stacked on top of one another. The optical device may be an example of a folded design that reflects optical signals between different stages of metamaterials.

97. 发明申请

WO2021040687A1 MULTICORE FIBER CROSSTALK SENSOR WITH MATCHED EFFECTIVE INDEX 审中-公开
公开(公告)号：WO2021040687A1
公开(公告)日：2021-03-04
申请号：PCT/US2019/048132
申请日：2019-08-26
申请人： CORNING INCORPORATED
发明人： LI, Ming-Jun
IPC分类号： G02B6/02 , G01K11/32 , G01L1/24 , G02B6/028 , G02B6/036
摘要： An optical fiber sensor with high sensitivity and high spatial resolution is described. The optical fiber sensor includes a multicore fiber having cores configured to permit crosstalk between cores. Crosstalk corresponds to transfer of an optical signal from a core to another core and is used as a mechanism for sensing the external environment surrounding the multicore optical fiber. The degree of crosstalk depends on the relative refractive index profile of the cores and surrounding cladding, as well as on the spacing between cores. The external environment surrounding the multicore optical fiber and changes therein influence crosstalk between cores to permit sensing. The relative refractive index profiles of the cores are also configured to provide a group delay difference for optical signals propagating in different cores. The group delay difference facilitates the position of an external perturbation along the length of the multicore optical fiber.

98. 发明申请

WO2021025858A1 SINGLE MODE OPTICAL FIBER WITH LOW BEND LOSS AT SMALL AND LARGE BEND DIAMETERS 审中-公开
公开(公告)号：WO2021025858A1
公开(公告)日：2021-02-11
申请号：PCT/US2020/042946
申请日：2020-07-22
申请人： CORNING INCORPORATED
发明人： LI, Ming-Jun , MISHRA, Snigdharaj Kumar , TANDON, Pushkar
IPC分类号： G02B6/036 , G02B6/02
摘要： The single mode optical fiber disclosed herein has a core, an inner cladding, a trench and an outer cladding, along with a non-glass protective coating. The refractive index profile of the optical fiber is such that the optical fiber has relatively low bend loss at both small and large bend diameters. The relative refractive indices of the inner cladding, trench and outer cladding are such that a tunneling point that arises during bending is pushed out beyond the trench and thus sufficiently far away from the core so that bending losses for both small and large radius bends are relatively small.

99. 发明申请

WO2020112347A1 QUANTUM KEY DISTRIBUTION SYSTEMS HAVING LOW LOSS DISPERSION LIMITING FIBERS 审中-公开
公开(公告)号：WO2020112347A1
公开(公告)日：2020-06-04
申请号：PCT/US2019/060989
申请日：2019-11-12
申请人： CORNING INCORPORATED
发明人： LI, Ming-Jun , NOLAN, Daniel Aloysius
IPC分类号： H04B10/2507 , H04B10/2513 , H04B10/70 , H04L9/08
摘要： A quantum communications system includes a quantum key generation system having a photonic quantum bit generator, a low loss dispersion limiting fiber having a length L, for example greater than 200 km, and a photon detector unit and a communications network having a signal generator, a signal channel, and a signal receiver. The low loss dispersion limiting fiber extends between and optically couples the photonic quantum bit generator and the photon detector unit. Further, the low loss dispersion limiting fiber is structurally configured to limit dispersion at an absolute dispersion rate of about 9 ps/(nm)km or less, and preferably 0.5 ps/(nm)km or less, and induce attenuation at an attenuation rate of about 0.175 dB/km or less such that the quantum key bit information of a plurality of photons output by the one or more photonic quantum bit generators is receivable at the photon detector unit at a bit rate of at least 10 Gbit/sec.

100. 发明申请

WO2019226477A1 SINGLE-MODE LARGE EFFECTIVE AREA OPTICAL FIBERS WITH LOW CUTOFF WAVELENGTH 审中-公开
公开(公告)号：WO2019226477A1
公开(公告)日：2019-11-28
申请号：PCT/US2019/032812
申请日：2019-05-17
申请人： CORNING INCORPORATED
发明人： BICKHAM, Scott Robertson , BOOKBINDER, Dana Craig , LI, Ming-Jun , MISHRA, Snigdharaj Kumar , TANDON, Pushkar
IPC分类号： G02B6/02 , G02B6/036
摘要： Optical fibers having a large effective area and a low cutoff wavelength are disclosed. Three main embodiments of the optical fiber allow for single-mode operation at wavelengths greater than 980 nm, and have a large effective area with low bend losses and low dispersion at 1310 nm. The large effective area optical fiber is expected to be particularly useful for data center applications due to its ability to efficiently optically couple with VCSELs and photonic integrated devices. Integrated systems and optical communication systems that employ the optical fibers are also disclosed.

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