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公开(公告)号：US4869567A
公开(公告)日：1989-09-26
申请号：US093528
申请日：1987-08-21
CPC分类号： G02B6/29332 , G02B6/14 , G02B6/2826 , G02B6/30 , G02F1/0118 , G02F1/1326 , G02F1/3131 , G02F1/3132
摘要： An optical coupler device comprises a waveguide structure underlying a first layer of material which has a refractive index higher than the effective refractive index of the waveguide structure and which is capable of supporting propagation modes of a higher order than, but matching the phase velocity of, the propagation mode or modes in the underlying waveguide structure, said layer thereby forming a wave guiding structure.
摘要翻译： PCT No.PCT / GB86 / 00802 Sec。 371日期1987年8月21日 102（e）日期1987年8月21日PCT PCT日期：1986年12月29日PCT公布。 出版物WO87 / 04260 日期1987年7月16日。一种光耦合器件包括在第一材料层下面的波导结构，其具有高于波导结构的有效折射率的折射率，并且能够支持高于 但是匹配下行波导结构中的传播模式或模式的相速度，所述层由此形成波导结构。
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2.发明授权Dielectric optical Fabry-Perot waveguide device and method for making and using same 失效介质光学法布里 - 珀罗波导器件及其制造和使用方法
公开(公告)号：US4859017A
公开(公告)日：1989-08-22
申请号：US026444
申请日：1987-03-19
CPC分类号： G02B6/29358 , H01S3/08 , H01S3/302
摘要： A selective filtering device for use in optical communications systems takes the form of a transversely coupled Fabry-Perot interferometer. One described embodiment comprises a first length of monomode optical fiber transversely coupled to a second fiber in a coupling region. One end of each fiber at opposite respective ends of the coupling region is provided with a suitable highly reflective surface, or example, an evaporated gold/aluminum deposit. In operation, a light input may be modified by the resonant cavity behavior of the Fabry-Perot cavity formed between the mirrored ends to provide filtered or enhanced outputs. The outputs may be further modified by alternative or additional light input via the ends of the fibers.
摘要翻译： PCT No.PCT / GB86 / 00430 Sec。 371日期1987年3月19日 102（e）1987年3月19日PCT PCT 1986年7月21日PCT公布。 第WO87 / 00699号公报 日期1987年1月29日。用于光通信系统的选择性滤波装置采用横向耦合法布里 - 珀罗干涉仪的形式。 一个所描述的实施例包括在耦合区域中横向耦合到第二光纤的单模光纤的第一长度。 每个纤维在耦合区域的相对两端的一端设置有合适的高反射表面，或者例如蒸发的金/铝沉积物。 在操作中，可以通过形成在镜像端之间的法布里 - 珀罗腔的谐振腔行为来修改光输入，以提供滤波或增强的输出。 输出可以通过纤维末端的替代或附加光输入进一步修改。
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公开(公告)号：US4881791A
公开(公告)日：1989-11-21
申请号：US288036
申请日：1988-12-19
CPC分类号： G02B6/02061 , G02F1/011 , H01S3/0675 , G02B6/29317 , H01S5/125
摘要： An optical device comprises an optical waveguide, such as a single mode optical fiber (11), underlying a first layer (2) of material, such as a thin film, which has a refractive index higher than the refractive index of the waveguide (11) and which forms a planar waveguide capable of supporting and guiding at least one propagation mode of a higher order than, but matching the phase velocity of, the propagation mode or modes in the underlying waveguide. A reflection diffraction grating (4) is provided on or adjacent to the surface of the first layer (2) remote from the waveguide (11). The arrangement is such that an optical signal which is coupled from the waveguide (11) into the first layer (2) is reflected by the reflection diffraction grating (4) and is coupled back into the waveguide.
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公开(公告)号：US5881059A
公开(公告)日：1999-03-09
申请号：US652157
申请日：1996-05-23
CPC分类号： H04Q11/0421 , H04Q3/60
摘要： A multi-host subscriber loop (10, 70) includes N central office terminals (22-26, 78) coupled to a local exchange (20, 76), where one of the N central office terminals (22, 110) is directly coupled to all other central office terminals (24-26, 112-114). M remote terminals (40-46, 100-104) are coupled to a plurality of telephone service subscribers. A single network facility (16, 76) is coupled between the M remote terminals and N central office terminals. The single network facility concentrates subscriber traffic, control information and associated signaling onto one message structure (60, 140). Messages in this message structure are transmitted between the remote terminals and central office terminals. The message structure includes a plurality of time slots, a first predetermined number of the time slots being allocated to N control channels, at least one time slot being allocated to associated signaling, and remaining time slots being allocated to subscriber traffic.
摘要翻译： 多主机用户环路（10,70）包括耦合到本地交换机（20,76）的N个中心局终端（22-26,78），其中N个中心局终端（22,110）中的一个直接耦合 到所有其他中心局终端（24-26,112-114）。 M个远程终端（40-46,100-104）耦合到多个电话服务用户。 单个网络设备（16,76）耦合在M个远程终端和N个中心局终端之间。 单个网络设施将用户业务，控制信息和相关联的信令集中到一个消息结构上（60,140）。 该消息结构中的消息在远程终端和中心局终端之间传输。 消息结构包括多个时隙，第一预定数量的时隙被分配给N个控制信道，至少一个时隙被分配给相关联的信令，并且剩余的时隙被分配给用户业务。
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公开(公告)号：US06320856B1
公开(公告)日：2001-11-20
申请号：US09264595
申请日：1999-03-08
IPC分类号： H04B7212
CPC分类号： H04Q11/0421 , H04Q3/60
摘要： A multi-host subscriber loop (10, 70) includes N central office terminals (22-26, 78) coupled to a local exchange (20, 76), where one of the N central office terminals (22, 110) is directly coupled to all other central office terminals (24-26, 112-114). M remote terminals (40-46, 100-104) are coupled to a plurality of telephone service subscribers. A single network facility (16, 76) is coupled between the M remote terminals and N central office terminals. The single network facility concentrates subscriber traffic, control information and associated signaling onto one message structure (60, 140). Messages in this message structure are transmitted between the remote terminals and central office terminals. The message structure includes a plurality of time slots, a first predetermined number of the time slots being allocated to N control channels, at least one time slot being allocated to associated signaling, and remaining time slots being allocated to subscriber traffic.
摘要翻译： 多主机用户环路（10,70）包括耦合到本地交换机（20,76）的N个中心局终端（22-26,78），其中N个中心局终端（22,110）中的一个直接耦合 到所有其他中心局终端（24-26,112-114）。 M个远程终端（40-46,100-104）耦合到多个电话服务用户。 单个网络设备（16,76）耦合在M个远程终端和N个中心局终端之间。 单个网络设施将用户业务，控制信息和相关联的信令集中到一个消息结构上（60,140）。 该消息结构中的消息在远程终端和中心局终端之间传输。 消息结构包括多个时隙，第一预定数量的时隙被分配给N个控制信道，至少一个时隙被分配给相关联的信令，并且剩余的时隙被分配给用户业务。
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公开(公告)号：US5146527A
公开(公告)日：1992-09-08
申请号：US401406
申请日：1989-09-01
申请人： Stephen R. Mallinson
发明人： Stephen R. Mallinson
CPC分类号： G02B6/2558 , G02B6/2551
摘要： A method of forming low loss splices between single-mode optical fiber ends involves taking prepared fiber ends and aligning the one with the other by inserting them into opposite ends of the bore of a ferrule, and fusing the fiber ends together by applying thermal energy thereto by means of an aperture in the wall of the ferrule. Splices prepared in this way have losses of less than 0.5 dB. The use of a precisely dimensioned ceramic ferrule enables the use of splicing apparatus which does not incorporate means for 3-dimensional micromanipulation.
摘要翻译： 在单模光纤端部之间形成低损耗接头的方法涉及准备好的纤维端部，并且将它们插入到套圈的孔的相对端部中并将其彼此对准，并且通过向其施加热能将纤维端部熔合在一起 通过套圈的壁中的孔。 以这种方式制备的接头损耗小于0.5dB。 使用精确尺寸的陶瓷套圈能够使用不具有用于三维显微操作的装置的拼接装置。
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公开(公告)号：US4969717A
公开(公告)日：1990-11-13
申请号：US303662
申请日：1989-01-23
申请人： Stephen R. Mallinson
发明人： Stephen R. Mallinson
IPC分类号： G02F1/1347 , G02F1/31
CPC分类号： G02F1/31
摘要： An optical switch includes a series of 2(n-1) macro-cells each having a variable polarization rotating cell and a birefringent cell. Each rotating cell is divided into individually addressable and switchable sub-cells. Some of the macro-cells have birefringent cells having a first orientation. In these macro-cells, sub-cells switch light passing through position Pi to either position Pi or Pi+1 of the rotating cell of the next macro-cell in the series. Other macro-cells have birefringent cells having a second orientation. In these macro-cells, the sub-cells switch light passing through position Pi to either position Pi or Pi-1 of the rotating cell of the next macro-cell in the series. The sub-cells of the macro-cells are positioned such that light from any one of several inputs is switchable independently to any one of several outputs.
摘要翻译： PCT No.PCT / GB88 / 00438 Sec。 371日期1989年1月23日 102（e）日期1989年1月23日PCT提交1988年6月3日PCT公布。 第WO88 / 09951号公报 日期为1988年12月15日。光开关包括一系列具有可变偏振旋转单元和双折射单元的2（n-1）个宏单元。 每个旋转单元被分成单独的可寻址和可切换的子单元。 一些宏单元具有具有第一取向的双折射单元。 在这些宏单元中，子单元将通过位置Pi的光切换到串联中的下一宏单元的旋转单元的位置Pi或Pi + 1。 其他宏单元具有具有第二取向的双折射单元。 在这些宏单元中，子单元将通过位置Pi的光切换到串联中的下一宏单元的旋转单元的位置Pi或Pi-1。 宏单元的子单元被定位成使得来自多个输入中的任一个的光可以独立地切换到多个输出中的任何一个。
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公开(公告)号：US5013140A
公开(公告)日：1991-05-07
申请号：US348576
申请日：1989-04-27
申请人： Peter Healey , Stephen R. Mallinson
发明人： Peter Healey , Stephen R. Mallinson
CPC分类号： G02F1/31 , G02B6/2817
摘要： An optical space switch comprising an optical output; three optical deflection stages each having a twisted-nematic liquid crystal polarization rotator responsive to a respective bi-state control signal and a calcite crystal deflection means for selectively deflecting optical signals according to their polarization. The deflection stages are arranged serially to define eight distinct source locations from where an optical signal is selectively deflectable successively by the deflection stages to the optical output. A distinct combination of states of the three control signals corresponds to each location. Each input is formed from an array of fibers so as to be capable of launching an optical signal which is spatially modulated transverse to the signal propagation direction. Each deflection stage preserves the spatial integrity of the deflected optical signals.
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公开(公告)号：US4825262A
公开(公告)日：1989-04-25
申请号：US80468
申请日：1987-06-11
申请人： Stephen R. Mallinson
发明人： Stephen R. Mallinson
IPC分类号： G02B6/42 , G01B9/02 , G01D5/26 , G01J3/18 , G01J3/26 , G02B5/28 , G02B6/12 , G02B6/122 , G02B6/28 , G02B6/32 , G02B6/34 , G02B6/35 , G02B6/36 , G02B6/38 , G02B7/00 , G02B7/182 , G02B26/00 , G02B26/02 , G02B26/08 , G02B26/10 , G02F1/21 , H01L21/52 , H01L31/02 , H01S3/02 , H01S3/10 , H01S3/1055 , H01S5/00 , H01S5/14
CPC分类号： H01S5/141 , G01D5/266 , G01J3/26 , G02B26/001 , G02B6/2817 , G02B6/32 , G02B6/3803 , G02B6/423 , G02B6/29358 , G02B6/3516 , G02B6/357 , H01S3/1055 , Y10S359/90
摘要： A Fabry-Perot interferometer comprises a single crystal silicon substrate (1) with an integrally formed diaphragm (6) supported between walls (2-5). A glass superstrate (14) is mounted adjacent the substrate (1) with a spacer (13) sandwiched therebetween. Facing surfaces (12, 16) of the diaphragm (6) and superstrate (14) are polished and suitably coated to define reflective surfaces and the position of the diaphragm may be altered to vary the response of the interferometer.
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公开(公告)号：US5042943A
公开(公告)日：1991-08-27
申请号：US488029
申请日：1990-05-17
摘要： Apparatus for measuring the endface angle of a cleaved optical fibre (1) includes a light source (3) for injecting optical energy into that end (1a) of the optical fibre (1) opposite to that whose endface angle is to be measured. Means are provided for tapping optical energy passing along the optical fiber (1) in both directions. Photodetectors (5,6) measure the signal strength of the optical energy tapped from the optical fibre (1) in both directions. The ratio of these measured signal strengths is compared with a known relationship between endface angles and the ratio of said measured signals to provide a measure of the endface angle.
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