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公开(公告)号：JPH1082692A
公开(公告)日：1998-03-31
申请号：JP15338697
申请日：1997-06-11
Applicant: LITTON SYSTEMS INC
Inventor： FREDERICK DONALD A , GOLDMAN ROBERT P , MAAS STEVEN J , MANSELL JOHN E
IPC: G01H9/00
Abstract: PROBLEM TO BE SOLVED: To provide an optical fiber hydrophone capable of averaging effects of a local noise source in a wide region and of being deployed in a portion around a sharp bend section. SOLUTION: An optical hydrophone 30 is constituted as a single interferometer 60 having a plurality of interferometer regions formed of a pair of optical fibers. Inner and outer coils each constituted of the pair of optical fibers are preferably provided as a coaxial pair and form a plurality of sensor regions. A spacer is constituted so as to guide the inner and outer optical fibers between the continuous sensor regions. The change of a physical parameter between sensor regions does not make a phase difference between optical signals guided by both of the fibers. The inner and outer optical coils are preferably exposed to the parameter so that the change of the parameter in each of sensor regions make change of the inverted phase to take place between optical signals in the outer coil and corresponding inner coil.
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公开(公告)号：WO0184204A3
公开(公告)日：2002-05-02
申请号：PCT/US0114098
申请日：2001-05-02
Applicant: LITTON SYSTEMS INC
Inventor： BEVAN DENNIS P , MANSELL JOHN E
IPC: G02B6/44
CPC classification number: G02B6/4446 , G02B6/4471
Abstract: A housing (24) for holding fiber optic components (64, 66, 68-70, 72-75) includes a base (26) formed generally as an elongate rectangle with end caps (34, 36). An array cable (9) formed of a plurality of constituent cables (10-16) that each comprises an optical fiber (18) and a tensile strength member (21) corresponding to each optical fiber (18) and a tensile strength member (21) corresponding to each optical fiber (18). Each end cap (34, 36) is formed to include a plurality of cable termination slots (40, 42, 43, 45) for connection to the strength members (21) of selected constituent cables (10-16) to which array components (64, 66, 68-70), 72-75) are connected and a plurality of cable bypass slots (41, 43, 46) for routing constituent cables (10-16) that are not connected to components around the housing (24).
Abstract translation: 用于保持光纤部件（64,66,68,70,72-75）的壳体（24）包括基部（26），其基本上形成为具有端盖（34,36）的细长矩形。 由多个组成电缆（10-16）形成的阵列电缆（9），每个组成电缆包括对应于每个光纤（18）的光纤（18）和拉伸强度构件（21）和拉伸强度构件（21） ）对应于每个光纤（18）。 每个端盖（34,36）形成为包括多个电缆端接槽（40,42,43,45），用于连接到所选择的组成电缆（10-16）的强度构件（21），阵列组件 64，66，68-70），72-75）和用于路由构成电缆（10-16）的多个电缆旁路槽（41,43,46），其不连接到壳体（24）周围的部件， 。
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公开(公告)号：WO0184205A3
公开(公告)日：2002-05-23
申请号：PCT/US0114243
申请日：2001-05-02
Applicant: LITTON SYSTEMS INC
Inventor： BEVAN DENNIS P , MANSELL JOHN E
IPC: G02B6/44
CPC classification number: G02B6/4446 , G02B6/4471
Abstract: A fiber optic array cable (9) comprises a plurality of constituent cables (10-16) that each includes an optical fiber (18), a strength member (21) connected to the optical fiber to provide tensile strength and a jacket (22) surrounding the optical fiber (18) and the strength member (21). A harness (17) is arranged to enclose the plurality of constituent cables (10-16) securely. The strength member (21) preferably is formed of a plurality of metal strands (20) layered around the optical fiber (18).
Abstract translation: 光纤阵列电缆（9）包括多个组成电缆（10-16），每个组成电缆包括光纤（18），连接到光纤以提供拉伸强度的强度构件（21）和夹套（22） 围绕光纤（18）和强度构件（21）。 线束（17）被布置成牢固地包围多个组成电缆（10-16）。 强度构件（21）优选地由围绕光纤（18）层叠的多个金属线（20）形成。
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公开(公告)号：AU693402B2
公开(公告)日：1998-06-25
申请号：AU2487797
申请日：1997-06-13
Applicant: LITTON SYSTEMS INC
Inventor： FREDERICK DONALD A , GOLDMAN ROBERT P , MAAS STEVEN J , MANSELL JOHN E
Abstract: A fiber optic hydrophone (30) is formed as a single interferometer having widely separated interferometer segments (32-35) formed in each of a pair of optical fibers (56-70). The interferometer segments (32-35) are designed to allow averaging of the effects of local noise sources over a broad area in order to increase the acoustic signal-to-noise ratio. The interferometer segments (32-35) also allow deployment of the hydrophone around sharp bends. A first optical fiber (56) is formed into a plurality of spatially separated outer coils (58,90,94). A second optical fiber (70) is formed into a plurality of inner coils (72,92,96) corresponding to the outer coils. The inner (50) and outer coils (72) are preferably arranged in concentric pairs to form a plurality of sensor segments (32-35). A plurality of spacers (40-42) is arranged such that a spacer is between successive sensor segments. The spacers (40-42) are formed to guide the outer (56) and inner (70) optical fibers between successive sensor segments (32-35) such that changes in the physical parameter between the sensor segments (32-35) produce no phase difference between optical signals guided by the outer (56) and inner (70) fibers. The outer (58) and inner coils (70) are preferably arranged for exposure to the parameter such that changes in the parameter at each sensor segment produce opposite phase changes between the optical signals in the outer coils and the corresponding outer coil.
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公开(公告)号：CA2204720C
公开(公告)日：1999-10-26
申请号：CA2204720
申请日：1997-05-07
Applicant: LITTON SYSTEMS INC
Inventor： FREDERICK DONALD A , MANSELL JOHN E , GOLDMAN ROBERT P , MAAS STEVEN J
Abstract: A fiber optic hydrophone is formed as a single interferometer having widely separated interferometer segments formed in each of a pair of optical fibers. The interferometer segments are designed to allow averaging of the effects of local noise sources over a broad area in order to increase the acoustic signal-to-noise ratio. The interferometer segments also allow deployment of the hydrophone around sharp bends. A first optical fiber is formed into a plurality of spatially separated outer coils. A second optical fiber is formed into a plurality of inner coils corresponding to the outer coils. The inner and outer coils are preferably arranged in concentric pairs to form a plurality of sensor segments. A plurality of spacers is arranged such that a spacer is between successive sensor segments. The spacers are formed to guide the outer and inner optical fibers between successive sensor segments such that changes in the physical parameter between the sensor segments produce no phase difference between optical signals guided by the outer and inner fibers. The outer and inner coils are preferably arranged for exposure to the parameter such that changes in the parameter at each sensor segment produce opposite phase changes between the optical signals in the outer coils and the corresponding outer coil.
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Patent Agency Ranking
公开(公告)号：NO972783D0
公开(公告)日：1997-06-16
申请号：NO972783
申请日：1997-06-16
Applicant: LITTON SYSTEMS INC
Inventor： FREDERICK DONALD A , GOLDMAN ROBERT P , MAAS STEVEN J , MANSELL JOHN E
IPC: G01H9/00
Abstract: A fiber optic hydrophone (30) is formed as a single interferometer having widely separated interferometer segments (32-35) formed in each of a pair of optical fibers (56-70). The interferometer segments (32-35) are designed to allow averaging of the effects of local noise sources over a broad area in order to increase the acoustic signal-to-noise ratio. The interferometer segments (32-35) also allow deployment of the hydrophone around sharp bends. A first optical fiber (56) is formed into a plurality of spatially separated outer coils (58,90,94). A second optical fiber (70) is formed into a plurality of inner coils (72,92,96) corresponding to the outer coils. The inner (50) and outer coils (72) are preferably arranged in concentric pairs to form a plurality of sensor segments (32-35). A plurality of spacers (40-42) is arranged such that a spacer is between successive sensor segments. The spacers (40-42) are formed to guide the outer (56) and inner (70) optical fibers between successive sensor segments (32-35) such that changes in the physical parameter between the sensor segments (32-35) produce no phase difference between optical signals guided by the outer (56) and inner (70) fibers. The outer (58) and inner coils (70) are preferably arranged for exposure to the parameter such that changes in the parameter at each sensor segment produce opposite phase changes between the optical signals in the outer coils and the corresponding outer coil.
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公开(公告)号：NO972783L
公开(公告)日：1997-12-18
申请号：NO972783
申请日：1997-06-16
Applicant: LITTON SYSTEMS INC
Inventor： FREDERICK DONALD A , GOLDMAN ROBERT P , MAAS STEVEN J , MANSELL JOHN E
Abstract: A fiber optic hydrophone (30) is formed as a single interferometer having widely separated interferometer segments (32-35) formed in each of a pair of optical fibers (56-70). The interferometer segments (32-35) are designed to allow averaging of the effects of local noise sources over a broad area in order to increase the acoustic signal-to-noise ratio. The interferometer segments (32-35) also allow deployment of the hydrophone around sharp bends. A first optical fiber (56) is formed into a plurality of spatially separated outer coils (58,90,94). A second optical fiber (70) is formed into a plurality of inner coils (72,92,96) corresponding to the outer coils. The inner (50) and outer coils (72) are preferably arranged in concentric pairs to form a plurality of sensor segments (32-35). A plurality of spacers (40-42) is arranged such that a spacer is between successive sensor segments. The spacers (40-42) are formed to guide the outer (56) and inner (70) optical fibers between successive sensor segments (32-35) such that changes in the physical parameter between the sensor segments (32-35) produce no phase difference between optical signals guided by the outer (56) and inner (70) fibers. The outer (58) and inner coils (70) are preferably arranged for exposure to the parameter such that changes in the parameter at each sensor segment produce opposite phase changes between the optical signals in the outer coils and the corresponding outer coil.
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公开(公告)号：NO972783A
公开(公告)日：1997-12-18
申请号：NO972783
申请日：1997-06-16
Applicant: LITTON SYSTEMS INC
Inventor： FREDERICK DONALD A , GOLDMAN ROBERT P , MAAS STEVEN J , MANSELL JOHN E
CPC classification number: G01H9/004
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公开(公告)号：CA2204720A1
公开(公告)日：1997-12-17
申请号：CA2204720
申请日：1997-05-07
Applicant: LITTON SYSTEMS INC
Inventor： FREDERICK DONALD A , MANSELL JOHN E , MAAS STEVEN J , GOLDMAN ROBERT P
Abstract: A fiber optic hydrophone (30) is formed as a single interferometer having widely separated interferometer segments (32-35) formed in each of a pair of optical fibers (56-70). The interferometer segments (32-35) are designed to allow averaging of the effects of local noise sources over a broad area in order to increase the acoustic signal-to-noise ratio. The interferometer segments (32-35) also allow deployment of the hydrophone around sharp bends. A first optical fiber (56) is formed into a plurality of spatially separated outer coils (58,90,94). A second optical fiber (70) is formed into a plurality of inner coils (72,92,96) corresponding to the outer coils. The inner (50) and outer coils (72) are preferably arranged in concentric pairs to form a plurality of sensor segments (32-35). A plurality of spacers (40-42) is arranged such that a spacer is between successive sensor segments. The spacers (40-42) are formed to guide the outer (56) and inner (70) optical fibers between successive sensor segments (32-35) such that changes in the physical parameter between the sensor segments (32-35) produce no phase difference between optical signals guided by the outer (56) and inner (70) fibers. The outer (58) and inner coils (70) are preferably arranged for exposure to the parameter such that changes in the parameter at each sensor segment produce opposite phase changes between the optical signals in the outer coils and the corresponding outer coil.
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公开(公告)号：EP0814326A2
公开(公告)日：1997-12-29
申请号：EP97303752
申请日：1997-06-03
Applicant: LITTON SYSTEMS INC
Inventor： FREDERICK DONALD A , GOLDMAN ROBERT P , MAAS STEVEN J , MANSELL JOHN E
IPC: G01H9/00
CPC classification number: G01H9/004
Abstract: A fiber optic hydrophone (30) is formed as a single interferometer having widely separated interferometer segments (32-35) formed in each of a pair of optical fibers (56-70). The interferometer segments (32-35) are designed to allow averaging of the effects of local noise sources over a broad area in order to increase the acoustic signal-to-noise ratio. The interferometer segments (32-35) also allow deployment of the hydrophone around sharp bends. A first optical fiber (56) is formed into a plurality of spatially separated outer coils (58,90,94). A second optical fiber (70) is formed into a plurality of inner coils (72,92,96) corresponding to the outer coils. The inner (50) and outer coils (72) are preferably arranged in concentric pairs to form a plurality of sensor segments (32-35). A plurality of spacers (40-42) is arranged such that a spacer is between successive sensor segments. The spacers (40-42) are formed to guide the outer (56) and inner (70) optical fibers between successive sensor segments (32-35) such that changes in the physical parameter between the sensor segments (32-35) produce no phase difference between optical signals guided by the outer (56) and inner (70) fibers. The outer (58) and inner coils (70) are preferably arranged for exposure to the parameter such that changes in the parameter at each sensor segment produce opposite phase changes between the optical signals in the outer coils and the corresponding outer coil.
Abstract translation: 光纤水听器（30）形成为具有在一对光纤（56-70）中的每一个中形成的具有广泛分离的干涉仪段（32-35）的单个干涉仪。 干涉仪段（32-35）被设计成允许对广泛区域的局部噪声源的影响进行平均，以增加声信噪比。 干涉仪段（32-35）还允许在锋利的弯曲处部署水听器。 第一光纤（56）形成为多个空间分离的外部线圈（58,90,94）。 第二光纤（70）形成为对应于外部线圈的多个内部线圈（72,92,96）。 内部（50）和外部线圈（72）优选地以同心对布置以形成多个传感器段（32-35）。 多个间隔件（40-42）被布置成使得间隔件在连续的传感器段之间。 间隔件（40-42）形成为在连续传感器段（32-35）之间引导外（56）和内（70）光纤，使得传感器段（32-35）之间的物理参数的变化不产生 由外（56）和内（70）纤维引导的光信号之间的相位差。 外部（58）和内部线圈（70）优选地布置成暴露于参数，使得每个传感器段处的参数的变化在外部线圈和对应的外部线圈中的光学信号之间产生相反的相位变化。
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