公开(公告)号：US06195479B1

公开(公告)日：2001-02-27

申请号：US09340863

申请日：1999-06-28

申请人： Jing-Jong Pan

发明人： Jing-Jong Pan

IPC分类号： G02B626

CPC分类号： G02B6/2726 ,  G02B6/266 ,  G02B6/2773 ,  G02F1/1326 ,  G02F1/31 ,  G02F2201/17

摘要： A polarization-insensitive fiberoptic reflective variable aftenuator and on-off switch is provided. The device has a sleeve holding a pair of optical fibers, a first, second and third birefringent crystals, a collimating GRIN lens, a liquid crystal cell and a mirror element. The first birefringent crystal is fixed over an end facet of one of the optical fiber pair, and the second and third birefringent crystals are fixed over an end facet of the other of the optical fiber pair. The GRIN lens has a first end face proximate the first, second and third birefringent crystals and the liquid crystal cell is located between the mirror element and a second end face of the GRIN lens. Responsive to preselected voltages applied to its electrical terminals, the liquid crystal cell is in a first state or a second state. The end facets of the pair of optical fibers, the first, second and third birefringent crystals, the GRIN lens, the liquid crystal cell, and the mirror element are arranged and oriented with respect to each other so that light from one optical fiber passes through, and back from, the first, second and third birefringent crystals, the GRIN lens, the liquid crystal cell and the mirror element into the other optical fiber when the liquid crystal cell is in the On state, and light from one optical fiber passes through, and back from, the first, second and third birefringent crystals, the GRIN lens, the liquid crystal cell and the mirror element , but not into the other second optical fiber when the liquid crystal cell is in the Off state. Light signal traveling between the first and second optical fibers can be attenuated by voltages intermediate the voltage corresponding to the On and Off states.

摘要翻译： 提供了偏振不敏感光纤反射式可变光源和开 - 关开关。 该装置具有保持一对光纤的套筒，第一，第二和第三双折射晶体，准直的GRIN透镜，液晶单元和反射镜元件。 第一双折射晶体固定在光纤对之一的端面上，第二和第三双折射晶体固定在另一个光纤对的端面上。 GRIN透镜具有靠近第一，第二和第三双折射晶体的第一端面，并且液晶单元位于镜元件和GRIN透镜的第二端面之间。 响应于施加到其电端子的预选电压，液晶单元处于第一状态或第二状态。 一对光纤的端面，第一，第二和第三双折射晶体，GRIN透镜，液晶单元和反射镜元件相对于彼此布置和取向，使得来自一根光纤的光通过 ，并且当液晶单元处于“开”状态时，从第一，第二和第三双折射晶体，GRIN透镜，液晶单元和反射镜元件返回到另一光纤中，并且来自一个光纤的光通过 从第一，第二和第三双折射晶体，GRIN透镜，液晶单元和反射镜元件返回，而当液晶单元处于关闭状态时不再进入其它第二光纤。 在第一和第二光纤之间行进的光信号可以通过对应于On和Off状态的电压之间的电压来衰减。

公开(公告)号：US6018534A

公开(公告)日：2000-01-25

申请号：US114712

申请日：1998-07-13

申请人： Jing-Jong Pan ,  Yuan Shi

发明人： Jing-Jong Pan ,  Yuan Shi

IPC分类号： H01S3/06 ,  H01S3/067 ,  H01S3/08 ,  H01S3/30

CPC分类号： H01S3/0675

摘要： A fiber Bragg grating DFB-DBR interactive laser is provided by an optical fiber section which is doped with at least one gain-inducing material. At each end of the section there is a fiber Bragg grating which operates as part of a fiber DBR laser. Between these two gratings there is a third fiber Bragg grating which has a 90.degree. phase shift region. The third fiber Bragg grating effectively operates as part of a fiber DFB laser. Each of the fiber Bragg gratings has a narrow reflective linewidth centered about the same wavelength so that the optical fiber section operates as a fiber Bragg grating DFB-DBR interactive laser upon sufficient pumping energy. The resulting fiber Bragg grating DFB-DBR interactive laser can be appropriately connected to pumping laser sources and WDM couplers to create fiber laser sources which are particularly adaptable to fiberoptic networks, particularly WDM and DWDM networks.

摘要翻译： 光纤布拉格光栅DFB-DBR交互式激光器由掺杂有至少一种增益诱导材料的光纤部分提供。 在该部分的每一端都有一个光纤布拉格光栅，其作为光纤DBR激光器的一部分。 在这两个光栅之间，有一个具有90°相移区域的第三个光纤布拉格光栅。 第三光纤布拉格光栅有效地作为光纤DFB激光器的一部分。 每个光纤布拉格光栅具有以相同波长为中心的窄反射线宽，使得光纤部分在足够的泵浦能量下作为光纤布拉格光栅DFB-DBR交互式激光器工作。 所得到的光纤布拉格光栅DFB-DBR交互式激光器可以适当地连接到泵浦激光源和WDM耦合器，以创建特别适用于光纤网络，特别是WDM和DWDM网络的光纤激光源。

公开(公告)号：US5889904A

公开(公告)日：1999-03-30

申请号：US797375

申请日：1997-02-07

申请人： Jing-Jong Pan ,  Ming Shih ,  Jingyu Xu

发明人： Jing-Jong Pan ,  Ming Shih ,  Jingyu Xu

IPC分类号： G02B6/32 ,  G02B6/00 ,  G02B6/26 ,  G02B6/28 ,  G02B6/293 ,  G02B6/34 ,  G02B6/42 ,  H04B10/02 ,  H04J14/00 ,  H04J14/02

CPC分类号： G02B6/2746 ,  G02B6/2848 ,  G02B6/29311 ,  G02B6/29362 ,  G02B6/2937 ,  G02B6/2938 ,  G02B6/4246 ,  H04J14/02 ,  G02B6/327 ,  Y10S372/703

摘要： A fiberoptic coupler capable of many functions is presented. The basic fiberoptic coupler has a first sleeve, a second sleeve, a first collimating GRIN or conventional lens, and a second collimating GRIN or conventional lens. The first sleeve holds end sections of two or more input optical fibers along the longitudinal axis of the sleeve. The second sleeve holds an end section of at least one output optical fiber. The end face of the second sleeve faces the first sleeve end face. The first collimating GRIN or conventional lens in front of the first sleeve end face collimates light signals from the input optical fibers and the second collimating GRIN or conventional lens in front of the second sleeve end face focusses light signals from at least one of the input optical fibers into the single output fiber, or at least one of the output optical fibers. With only one output fiber the coupler operates as a combiner. If more than one output fiber is held by the second sleeve, the input and output fibers can be arranged so that a light signal from one input fiber is sent to one output fiber. For added functionality, optical elements, such as isolators and wavelength-dependent filters, can be inserted between the first and second collimating lenses.

摘要翻译： 提出了一种具有很多功能的光纤耦合器。 基本光纤耦合器具有第​​一套筒，第二套筒，第一准直GRIN或常规透镜以及第二准直GRIN或常规透镜。 第一套筒沿着套筒的纵轴保持两个或更多个输入光纤的端部。 第二套筒保持至少一根输出光纤的端部。 第二套筒的端面面向第一套筒端面。 在第一套筒端面前面的第一准直GRIN或常规透镜准直来自输入光纤的光信号，并且第二套筒端面前面的第二准直GRIN或常规透镜聚焦来自至少一个输入光学器件的光信号 纤维进入单个输出光纤，或至少一个输出光纤。 只有一个输出光纤，耦合器作为组合器工作。 如果多个输出光纤被第二套筒保持，则输入和输出光纤可被布置成使得来自一个输入光纤的光信号被发送到一个输出光纤。 为了增加功能，可以在第一和第二准直透镜之间插入诸如隔离器和波长依赖滤光器之类的光学元件。

公开(公告)号：US5815614A

公开(公告)日：1998-09-29

申请号：US779133

申请日：1997-01-06

申请人： Jing-Jong Pan

发明人： Jing-Jong Pan

IPC分类号： G02B6/26 ,  G02B6/32 ,  G02B6/35

CPC分类号： G02B6/3582 ,  G02B6/262 ,  G02B6/32 ,  G02B6/3504 ,  G02B6/3524 ,  G02B6/3526 ,  G02B6/327 ,  G02B6/355 ,  G02B6/3558 ,  G02B6/3594

摘要： An improved optical switch having a first optical fiber and a plurality of N optical fibers. The first optical fiber forms an optical path with any one of the N optical fibers by an alignment of a longitudinal axis of an end of the first optical fiber with a longitudinal axis of an end of the one of N optical fibers. A switch in optical path is performed by a relative movement of the first optical fiber with respect to the N optical fibers for a realignment of the longitudinal axis of the end of the first optical fiber with a longitudinal axis of an end of another one of the N optical fibers.

摘要翻译： 一种具有第一光纤和多个N根光纤的改进的光开关。 第一光纤通过第一光纤的端部的纵向轴线与N根光纤之一的纵向轴线的对准来与N个光纤中的任何一个形成光路。 通过第一光纤相对于N个光纤的相对运动来执行光路中的开关，用于使第一光纤端部的纵向轴线与另一个光纤端部的端部的纵向轴线重新对准 N光纤。

公开(公告)号：US5796889A

公开(公告)日：1998-08-18

申请号：US614864

申请日：1996-03-13

申请人： Jingyu Xu ,  Jing-Jong Pan

发明人： Jingyu Xu ,  Jing-Jong Pan

IPC分类号： G02B6/34 ,  G02B6/38 ,  G02B6/28

CPC分类号： G02B6/2938 ,  G02B6/2937 ,  G02B6/3833 ,  Y10S372/703

摘要： A compact, high-performance WDM coupler which couples at least three optical fibers is presented. The coupler has the ends of first, second and third optical fibers near a first face of a collimating lens. A wavelength-dependent filter, such as a long-pass filter, a short-pass filter or a band-pass filter, is located near the opposite face of the collimating lens. The wavelength-dependent filter and the ends of the first and second optical fibers are arranged with respect to each other so that light from the first optical fiber and reflected by the wavelength-dependent filter passes into the second optical fiber. Light which passes through the wavelength-dependent filter remains collimated by the collimated lens. Reflecting elements or a second collimating lens in focus with the end(s) of one or more optical fibers can placed next to the wavelength-dependent filter and on the other side of the collimating lens to create variations of the WDM coupler for many applications.

摘要翻译： 提出了耦合至少三根光纤的紧凑型高性能WDM耦合器。 耦合器在准直透镜的第一面附近具有第一，第二和第三光纤的端部。 诸如长通滤波器，短通滤波器或带通滤波器的波长依赖滤波器位于准直透镜的相对面附近。 波长相关滤光器和第一和第二光纤的端部相对于彼此布置，使得来自第一光纤并由波长相关滤光器反射的光通过第二光纤。 通过波长相关滤光片的光线保持准直透镜准直。 与一个或多个光纤的端部对焦的反射元件或第二准直透镜可以放置在靠近波长的滤光器的旁边并且在准直透镜的另一侧上，以便为许多应用产生WDM耦合器的变化。

公开(公告)号：US5742712A

公开(公告)日：1998-04-21

申请号：US727075

申请日：1996-10-08

申请人： Jing-Jong Pan ,  Jing-Yu Xu ,  Charlene Jia-Ling Yang

发明人： Jing-Jong Pan ,  Jing-Yu Xu ,  Charlene Jia-Ling Yang

IPC分类号： G02B6/32 ,  G02B6/35 ,  G02B6/38 ,  G02B6/26

CPC分类号： G02B6/3514 ,  G02B6/32 ,  G02B6/3833 ,  G02B6/327 ,  G02B6/3556

摘要： The present invention provides improved optic switches in which the optic fibers and optical pathways need not move. Advantageously, the switches of the present invention generally rely on a combination of a moveable reflective element and at least one fixed collimating lens. The collimating lens typically expands the light signal from a single mode fiber to a substantially larger optic path. When the reflective element is disposed out of this large optic path, the light signals continue on to a first output fiber, often through another collimating lens. However, when the reflective element is disposed within the expanded optic path from the collimating lens, the signal is reflected back through that same collimating lens into an alternative output fiber which is parallel and in close proximity to the input fiber. Conveniently, the reflective element can move across the optic path without changing the position of the input or output fibers relative to each other. Surprisingly, a thin planar reflector which is aligned to reflect one of a pair of signals crossing between two collimating lenses can also reflect the other crossing signal, thereby providing highly efficient multiple signal switching. Hence, by carefully locating a number of optic fibers parallel to each other about the center line of the collimating lens, a wide variety of highly efficient, multiple input and multiple output switching structures can be constructed.

公开(公告)号：US5699377A

公开(公告)日：1997-12-16

申请号：US640417

申请日：1996-04-30

申请人： Jing-Jong Pan

发明人： Jing-Jong Pan

IPC分类号： G02B6/42 ,  H01S5/022 ,  H01S5/14 ,  H01S3/08 ,  G02B6/00

CPC分类号： G02B6/0218 ,  G02B6/4208 ,  G02B6/4215 ,  G02B6/424 ,  H01S5/147 ,  G02B6/4265 ,  G02B6/4269 ,  G02B6/4271 ,  G02B6/4286 ,  H01S3/1053 ,  H01S3/1055 ,  H01S5/0064 ,  H01S5/02216 ,  H01S5/02284 ,  H01S5/02415 ,  H01S5/02446

摘要： A semiconductor laser source having a laser diode and a fiber Bragg grating is described. The laser diode has first and second facets from which output light is emitted. A first end of the fiber Bragg grating is located near the second facet to receive output light from the laser diode. The fiber Bragg grating has a very narrow linewidth about a selected wavelength and reflects output light in the selected narrow linewidth back into the laser diode through its second facet. The output light emitted from the first facet has a very narrow linewidth about the selected linewidth.

摘要翻译： 描述了具有激光二极管和光纤布拉格光栅的半导体激光源。 激光二极管具有从其输出光的第一和第二小平面。 光纤布拉格光栅的第一端位于第二面附近以接收来自激光二极管的输出光。 光纤布拉格光栅具有围绕所选波长的非常窄的线宽，并将所选窄线宽中的输出光通过其第二面反射回激光二极管。 从第一小面发射的输出光线对于所选择的线宽具有非常窄的线宽。

公开(公告)号：USRE35575E

公开(公告)日：1997-07-29

申请号：US355138

申请日：1994-12-13

申请人： Jing-Jong Pan

发明人： Jing-Jong Pan

IPC分类号： G02B6/26 ,  G02B6/32 ,  G02B6/38 ,  G02B6/42 ,  G02B27/28 ,  G02F1/09 ,  G02B6/00

CPC分类号： G02B6/2746 ,  G02B6/32 ,  G02B6/4208 ,  G02F1/093 ,  G02B6/3822 ,  G02F2202/20

摘要： An improved optical isolator of the type having an input optical fiber, a first GRIN lens, a first polarizer, a optical rotator, a second polarizer, a second GRIN lens and an output optical fiber. Lithium niobate birefringent crystals are used for lowered costs and high performance. Improvements also include polishing the end of the input optical fiber at a slant and covering the end with a window coated with antireflection material. The surface of the GRIN lens facing the end of the input optical fiber is slant-polished reciprocally and spaced apart with gap which avoids Fabry-Perot interference.

摘要翻译： 具有输入光纤，第一GRIN透镜，第一偏振器，光旋转器，第二偏振器，第二GRIN透镜和输出光纤的类型的改进型光隔离器。 铌酸锂双折射晶体用于降低成本和高性能。 改进还包括以倾斜抛光输入光纤的端部并且用涂有防反射材料的窗口覆盖端部。 面对输入光纤端面的GRIN透镜的表面相互倾斜抛光并间隔开，避免了法布里 - 珀罗干涉。

公开(公告)号：US5611009A

公开(公告)日：1997-03-11

申请号：US512752

申请日：1995-08-09

申请人： Jing-Jong Pan

发明人： Jing-Jong Pan

IPC分类号： G02B6/26 ,  G02B6/32 ,  G02B6/35

CPC分类号： G02B6/3582 ,  G02B6/262 ,  G02B6/32 ,  G02B6/3504 ,  G02B6/3524 ,  G02B6/3526 ,  G02B6/327 ,  G02B6/355 ,  G02B6/3558 ,  G02B6/3594

摘要： An improved optical switch having a first optical fiber and a plurality of N optical fibers. The first optical fiber forms an optical path with any one of the N optical fibers by an alignment of a longitudinal axis of an end of the first optical fiber with a longitudinal axis of an end of the one of N optical fibers. A switch in optical path is performed by a relative movement of the first optical fiber with respect to the N optical fibers for a realignment of the longitudinal axis of the end of the first optical fiber with a longitudinal axis of an end of another one of the N optical fibers.

摘要翻译： 一种具有第一光纤和多个N根光纤的改进的光开关。 第一光纤通过第一光纤的端部的纵向轴线与N根光纤之一的纵向轴线的对准来与N个光纤中的任何一个形成光路。 通过第一光纤相对于N个光纤的相对运动来执行光路中的开关，用于使第一光纤端部的纵向轴线与另一个光纤端部的端部的纵向轴线重新对准 N光纤。

公开(公告)号：US5562839A

公开(公告)日：1996-10-08

申请号：US473694

申请日：1995-06-07

申请人： Jing-Jong Pan

发明人： Jing-Jong Pan

IPC分类号： G02B6/245 ,  G02B6/255 ,  G02B6/28 ,  G02B6/32 ,  B44C1/22 ,  C03C15/00

CPC分类号： G02B6/32 ,  G02B6/245 ,  G02B6/2552 ,  G02B6/2848

摘要： A low-cost, high performance 1.times.N fiber optic coupler where N>16 is presented. The coupler has a GRIN lens having an first optic fiber aligned with the optical axis of the lens at one end of the lens. The first optic fiber ends in a microlens. At the other end of the GRIN lens a bundle of tapered second optic fibers is centered on the optical axis of the lens.

摘要翻译： 提供N> 16的低成本，高性能1xN光纤耦合器。 耦合器具有在透镜的一端具有与透镜的光轴对准的第一光纤的GRIN透镜。 第一个光纤以微透镜结束。 在GRIN透镜的另一端，一束锥形第二光纤以透镜的光轴为中心。