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1. 发明公开

EP0895060A3 Method and apparatus for determining the pressure-induced nonreciprocity of a fibre-optic coil 失效
标题翻译：用于确定光纤线圈的压力诱导非互易性的方法和装置
公开(公告)号：EP0895060A3
公开(公告)日：2000-06-07
申请号：EP98110705.5
申请日：1998-06-10
申请人： LITTON SYSTEMS, INC.
发明人： Rahn, John P. , Patterson, Ralph A.
IPC分类号： G01C19/72 , G01C25/00 , G01M11/08
CPC分类号： G01M11/088 , G01C19/721 , G01C25/005
摘要： The invention is a method and apparatus for quantitatively characterizing the pressure-induced nonreciprocity of a fiber-optic coil where the pressure-induced nonreciprocity is a property of a fiber-optic coil which pertains to the degree to which light beams, initially in phase, differ in phase as a result of traversing the fiber-optic coil in reverse directions while the fiber-optic coil is being subjected to a time-varying pressure. The method conprises the steps of applying time-varying pressure to the fiber-optic coil for a predetermined time period, measuring the phase difference of light beams traversing the fiber-optic coil in reverse directions during the predetermined time period, and obtaining a measure of the nonreciprocity of the fiber-optic coil utilizing the measured phase difference. If the time-varying pressure is specified by a first function of time, the measure of the nonreciprocity is the integral over the predetermined time period of the product of a second function of time and either (1) the phase difference of light beams traversing the fiber-optic coil in reverse directions during the predetermined time period or (2) the integral over time of the phase difference. The second function is chosen such that the measure of the nonrecipocity has a signal-to-noise ratio of at least one. Preferably, the second function is (1) an approximation of the time derivative of the first function if the product involves the phase difference or (2) an approximation of the first function if the product involves the integral of the phase difference. The invention also includes the apparatus for practicing the method.

2. 发明公开

EP0893713A2 Absorbing coating of optical media to prevent reflection, transmission and scatter 失效
标题翻译： Absorbierende Beschichtungenfürein optisches Medium um Reflektion，Transmission und Diffusion zu verhindern
公开(公告)号：EP0893713A2
公开(公告)日：1999-01-27
申请号：EP98304987.5
申请日：1998-06-25
申请人： Litton Systems
发明人： Rahn, John P.
IPC分类号： G02B6/122 , G01C19/00
CPC分类号： G02B6/4246 , G01C19/721 , G02B6/122 , G02B2006/12126 , G02B2006/1215
摘要： Stray light incident upon a surface of an optical component is absorbed without reflection, scatter or transmission. A layer of a light absorbing material is placed upon the surface and the coated optical component is attached to the mount. The absorbing layer has a layer refractive index n L and an extinction coefficient k. The mount and absorbing layer have mount refractive index n m and layer refractive index n L and an extinction coefficient k such that light of the selected optical wavelength incident upon the absorbing layer from within the optical component is absorbed without reflection.
摘要翻译：入射到光学部件的表面上的杂散光在没有反射，散射或透射的情况下被吸收。将一层光吸收材料放置在表面上，并将涂覆的光学部件附接到安装件。吸收层具有层折射率nL和消光系数k。安装和吸收层具有安装折射率nm和层折射率nL和消光系数k，使得从光学部件内入射到吸收层上的所选择的光学波长的光在不反射的情况下被吸收。

3. 发明公开

EP0338160A3 Anti-reflective coatings 失效
标题翻译：防反射涂层
公开(公告)号：EP0338160A3
公开(公告)日：1990-08-16
申请号：EP88309536.6
申请日：1988-10-12
申请人： Litton Systems, Inc.
发明人： Rahn, John P.
IPC分类号： G02B1/10
CPC分类号： G02B1/115
摘要： A method for producing a narrow band anti-reflective film on a substrate, uses the concept of considering a multifilm dielectric to be an equivalent two-film dielectric, then removing a predetermined thickness of the outer, lower dielectric, film (18) to cause the complete multifilm to become anti-reflective. When limited numbers of film materials are available, an EIL or effective index layer concept is used to improve the tolerance of the reflection of an anti-reflective film to film thickness errors.
摘要翻译：在基板上制造窄带抗反射膜的方法使用将多层电介质考虑为等效的双层电介质的概念，然后去除外部和下部电介质膜（18）的预定厚度，从而引起完整的复印成为防反光。当有限数量的薄膜材料可用时，使用EIL或有效折射率层概念来改善抗反射膜的反射与膜厚度误差的公差。

4. 发明公开

EP0977074A3 An integrated optics chip with reduced thermal errors due to pyroelectric effects 有权
标题翻译：集成光学芯片由于热电效应而减少热误差
公开(公告)号：EP0977074A3
公开(公告)日：2000-07-12
申请号：EP99114791.9
申请日：1999-07-28
申请人： LITTON SYSTEMS, INC.
发明人： Shafer, Kenneth W. , Abbink, Henry C. , Rahn, John P. , Geosling, Christine E. , Zimmerman, Gregory A.
IPC分类号： G02F1/035
CPC分类号： G02F1/035 , G02F2203/21
摘要： An Integrated Optics Chip with improved performance when exposed to changing temperature is disclosed. The optic chip or integrated optic chip or MIOC has a top surface, a +Z face and -Z face. The chip is formed from a crystal having a high electro-optic coefficient such as Lithium Niobate. For the purpose of orienting the components to the optic chip to be described, the +Z crystal axis extends outward from the +Z face, the Z axis being the axis across which a pyroelectric effect is exhibited. The top surface is orthogonal to the Z axis. An input waveguide on the top surface receives an optical signal from an input port, passes the signal via a waveguide network, to an output waveguide coupling the waveguide network to an output port. A portion of the +Z and -Z faces are coated at least partially with a conductive coating. A conductive path couples the +Z and -Z faces to prevent a charge differential from developing between the +Z and -Z faces due to a change in temperature of the optic chip and the pyroelectric effect.
摘要翻译：公开了一种集成光学芯片，当暴露于变化的温度时具有改进的性能。光学芯片或集成光学芯片或MIOC具有顶面，+ Z面和-Z面。该芯片由诸如铌酸锂之类的具有高电光系数的晶体形成。为了将部件定向到要描述的光学芯片，+ Z晶轴从+ Z面向外延伸，Z轴是穿过其展现热电效应的轴。顶面与Z轴正交。顶面上的输入波导从输入端口接收光信号，将信号经由波导网络传递到将波导网络耦合到输出端口的输出波导。 + Z和-Z面的一部分至少部分地涂覆有导电涂层。导电路径耦合+ Z和-Z面以防止由于光学芯片的温度变化和热电效应在+ Z和-Z面之间产生电荷差异。

5. 发明公开

EP0889301A2 Low shupe bias fiber optic rotation coil 失效
标题翻译： Faseroptische Rotationsspule mit Niedrigem Shupe-Effekt
公开(公告)号：EP0889301A2
公开(公告)日：1999-01-07
申请号：EP98304949.5
申请日：1998-06-24
申请人： LITTON SYSTEMS, INC.
发明人： Rahn, John P.
IPC分类号： G01C19/72
CPC分类号： G02B6/4457 , G01C19/722
摘要： A fiber optic ribbon is used for forming a sensing coil that may be used in a Sagnac effect fiber optic rotation sensor. The fiber optic ribbon provides a single radial layer per turn of the coil winder and can be made to have a quadrupole spatial turn distribution. This winding technique mitigates the Shupe effect.
摘要翻译：该方法包括将多根光纤包围在平行保持的柔性材料中，以形成光纤带（10）。然后将带卷成螺旋形，使带的端部彼此接触。对接接头（20-26）在选定的纤维端之间，以形成具有顺时针自由端（16）和逆时针自由端（18）的光纤端线圈（15）。

6. 发明公开

EP0843158A2 Potted gyro sensor coil with inter-turn stress relief 失效
标题翻译： Eingegossene Kreiselsensorspule mit Spannungsentlastung zwischen den Windungen
公开(公告)号：EP0843158A2
公开(公告)日：1998-05-20
申请号：EP97309102.8
申请日：1997-11-12
申请人： LITTON SYSTEMS, INC.
发明人： Cordova, Amado , Hoover, Robert J. , McLean, Thomas , Patterson, Ralph A. , Rahn, John P.
IPC分类号： G01C19/72 , G02B6/44
CPC分类号： G01C19/722 , G02B6/4457
摘要： A potted sensor coil for a fibre optic gyroscope includes an inter-layer stress relief layer (32, 34) of lubricating material. The coil is wound into a known pattern. Various coil configurations can be realized in which a coating layer (32, 34) of lubricant relieves stressing at the interface between the outer jacket (26) of the fibre (28) and the coil potting material (30, 36).
摘要翻译：通过向心轴（14）施加一层灌封材料，施加预定润滑剂层（34），以预定图案缠绕一层光纤（28），形成预定尺寸的盆式传感器线圈用于光纤陀螺仪，施加预定润滑剂的另外的层（26），并重复上述步骤，直到在施加最后一层灌封材料并固化所述封套线圈之前已经缠绕了预定长度的光纤。还要求的是：（1）第二种方法，其中施加的每个灌封材料层是可UV固化的并且通过在施加预定润滑剂层之后施加预定强度的UV能量而固化，之后是一层光纤 ; 和（2）用于光纤陀螺仪的所得盆栽传感器线圈，其具有缠绕在粘合剂灌封材料的基体内的光纤成形缠绕层的旋转，但是具有位于线圈的至少一个缠绕层的匝之间的界面处的润滑材料和灌封材料。

7. 发明公开

EP0977073A3 Dual purpose input electrode structure for multi-function integrated optics chips (MIOCs) 审中-公开
标题翻译：双功能Eingangselektrodentruktur于多功能集成光学芯片（“MIOC”）
公开(公告)号：EP0977073A3
公开(公告)日：2000-07-12
申请号：EP99114785.1
申请日：1999-07-28
申请人： LITTON SYSTEMS, INC.
发明人： Gampp, Lorrie L. , Zimmerman, Gregory A. , Geosling, Christine E. , Rahn, John P.
IPC分类号： G02F1/035
CPC分类号： G02F1/3137 , G02F1/035 , G02F2203/21
摘要： An Integrated Optics Chip with improved performance when exposed to rapidly changing temperature is disclosed. The optic chip or integrated optic chip or MIOC has a top surface, a +Z face and -Z face. The chip is formed from a crystal having a high electro-optic coefficient such as Lithium Niobate. For the purpose of orienting the components to the optic chip to be described, the +Z crystal axis extends outward from the +Z face. An input waveguide formed in the top surface of the chip and orthogonal to the +Z axis receives an optical signal from an input port, passes the signal via a waveguide network, to an output waveguide coupling the waveguide network to an output port. Metalization is applied to the top face of the optic chip to form at least a first and a second rail. The first and second rails are positioned to very closely straddle a portion of the input waveguide. A conductive bridge connects the first and second rails to prevent a charge differential from developing between the first and second rails.

8. 发明公开

EP0977074A2 An integrated optics chip with reduced thermal errors due to pyroelectric effects 有权
标题翻译： Integrierter optischer Chip mit Verringerung des durch pyroelektrischen Effekt induzierten thermischen Fehlers
公开(公告)号：EP0977074A2
公开(公告)日：2000-02-02
申请号：EP99114791.9
申请日：1999-07-28
申请人： LITTON SYSTEMS, INC.
发明人： Shafer, Kenneth W. , Abbink, Henry C. , Rahn, John P. , Geosling, Christine E. , Zimmerman, Gregory A.
IPC分类号： G02F1/035
CPC分类号： G02F1/035 , G02F2203/21
摘要： An Integrated Optics Chip with improved performance when exposed to changing temperature is disclosed. The optic chip or integrated optic chip or MIOC has a top surface, a +Z face and -Z face. The chip is formed from a crystal having a high electro-optic coefficient such as Lithium Niobate. For the purpose of orienting the components to the optic chip to be described, the +Z crystal axis extends outward from the +Z face, the Z axis being the axis across which a pyroelectric effect is exhibited. The top surface is orthogonal to the Z axis. An input waveguide on the top surface receives an optical signal from an input port, passes the signal via a waveguide network, to an output waveguide coupling the waveguide network to an output port. A portion of the +Z and -Z faces are coated at least partially with a conductive coating. A conductive path couples the +Z and -Z faces to prevent a charge differential from developing between the +Z and -Z faces due to a change in temperature of the optic chip and the pyroelectric effect.
摘要翻译：公开了当暴露于变化的温度时具有改进的性能的集成光学芯片。光学芯片或集成光学芯片或MIOC具有顶面，+ Z面和-Z面。该芯片由具有高电光系数的晶体形成，例如铌酸锂。为了将元件定向到要描述的光学芯片，+ Z晶体轴从+ Z面向外延伸，Z轴是表示热电效应的轴。顶面与Z轴正交。顶表面上的输入波导接收来自输入端口的光信号，将信号经由波导网络传递到将波导网络耦合到输出端口的输出波导。至少部分地用导电涂层涂覆一部分+ Z和-Z面。由于光学芯片的温度变化和热电效应，导电路径耦合+ Z和-Z面以防止+ Z和-Z面之间的电荷差异发展。

9. 发明公开

EP0895060A2 Method and apparatus for determining the pressure-induced nonreciprocity of a fibre-optic coil 失效
标题翻译：用于确定光纤线圈的压力诱导非互易性的方法和装置
公开(公告)号：EP0895060A2
公开(公告)日：1999-02-03
申请号：EP98110705.5
申请日：1998-06-10
申请人： LITTON SYSTEMS, INC.
发明人： Rahn, John P. , Patterson, Ralph A.
IPC分类号： G01C19/72
CPC分类号： G01M11/088 , G01C19/721 , G01C25/005
摘要： The invention is a method and apparatus for quantitatively characterizing the pressure-induced nonreciprocity of a fiber-optic coil where the pressure-induced nonreciprocity is a property of a fiber-optic coil which pertains to the degree to which light beams, initially in phase, differ in phase as a result of traversing the fiber-optic coil in reverse directions while the fiber-optic coil is being subjected to a time-varying pressure. The method conprises the steps of applying time-varying pressure to the fiber-optic coil for a predetermined time period, measuring the phase difference of light beams traversing the fiber-optic coil in reverse directions during the predetermined time period, and obtaining a measure of the nonreciprocity of the fiber-optic coil utilizing the measured phase difference. If the time-varying pressure is specified by a first function of time, the measure of the nonreciprocity is the integral over the predetermined time period of the product of a second function of time and either (1) the phase difference of light beams traversing the fiber-optic coil in reverse directions during the predetermined time period or (2) the integral over time of the phase difference. The second function is chosen such that the measure of the nonrecipocity has a signal-to-noise ratio of at least one. Preferably, the second function is (1) an approximation of the time derivative of the first function if the product involves the phase difference or (2) an approximation of the first function if the product involves the integral of the phase difference. The invention also includes the apparatus for practicing the method.
摘要翻译：本发明是一种方法和装置，用于定量表征光纤线圈的压力引起的不可逆性，其中压力引起的不可逆性是哪个涉及度的光纤线圈的特性，以哪个光束，最初在相位，在相区分作为遍历反向方向上的光纤线圈，而光纤线圈正在经受随时间变化的压力的结果。该方法conprises施加随时间变化的压力施加到光纤线圈的预定时间段，在该预定时间段期间测量光束穿过以相反方向上的光纤线圈的相位差，并获得的度量的步骤光纤线圈利用测得的相位差的不可逆性。如果由第一时间函数中指定的时间变化的压力下，不可逆性的测量是积分过的时间和任一（1）的光束穿过的相位差的第二功能的产品的预定的时间段在以上的相位差在预定的时间TIMEPERIOD或（2）的积分期间相反的方向的光纤线圈。选择第二函数检查做了nonrecipocity的测量具有至少一个的信噪比。优选地，所述第二函数是：（1）连接到了firstFunction的时间导数的近似，如果产品涉及（2）上的了firstFunction近似的相位差，或者如果产品涉及的相位差的积分。因此本发明包括用于实施该方法的装置。

10. 发明授权

EP0977074B1 An integrated optics chip with reduced thermal errors due to pyroelectric effects 有权
标题翻译：与减少的感应热电效应的热误差的集成光学芯片
公开(公告)号：EP0977074B1
公开(公告)日：2008-09-03
申请号：EP99114791.9
申请日：1999-07-28
申请人： Litton Systems, Inc.
发明人： Shafer, Kenneth W. , Abbink, Henry C. , Rahn, John P. , Geosling, Christine E. , Zimmerman, Gregory A.
IPC分类号： G02F1/035
CPC分类号： G02F1/035 , G02F2203/21

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