公开(公告)号：US5018831A

公开(公告)日：1991-05-28

申请号：US216717

申请日：1988-07-06

申请人： Richard Wyatt ,  Keith H. Cameron

发明人： Richard Wyatt ,  Keith H. Cameron

IPC分类号： H01S3/08 ,  H01S5/00 ,  H01S5/10 ,  H01S5/14

CPC分类号： H01S5/141 ,  H01S3/08009

摘要： An optical resonant device comprises a laser diode (14), a graded-index collimating lens (11) and a prism grating (17). The lens (11) is rigidly connected to the prism grating (17). Coarse tuning by adjustment of the angle of incidence of light on the grating (17) is achieved by laterally offsetting the laser (14) relative to the central optical axis C of the lens (11). The grating (17) is angled relative to the optical axis C so that the tuned position of the laser (14) is at or close to the optical axis C.

公开(公告)号：US4472053A

公开(公告)日：1984-09-18

申请号：US354244

申请日：1982-03-03

申请人： Richard Wyatt ,  Ernesto E. Marinero

发明人： Richard Wyatt ,  Ernesto E. Marinero

IPC分类号： G01J11/00 ,  G04F13/02 ,  G01J9/00

CPC分类号： G04F13/026

摘要： An extension of the noncollinear second harmonic generation technique for lse autocorrelation measurements is described. A diffraction-grating is used to produce a tailored, expanded beam, with a differential time delay along its expanded axis. When this beam is combined with an inverted replica of itself at the frequency-doubling crystal, the monitored spatial profile of the generated second harmonic beam gives directly the duration of the incident laser pulse. A time resolution of better than 1 picosecond (ps) is obtained at 500 nanometers (nm), and a total measurement range of .about.80 ps. The optical system here described enables the extension of the measurement range in a simple manner.

摘要翻译： 描述了用于脉冲自相关测量的非线性二次谐波生成技术的扩展。 衍射光栅用于产生定制的扩展光束，沿其扩展轴具有差分时间延迟。 当该光束在倍频晶体处与其自身的反转副本组合时，所产生的二次谐波光束的监视的空间分布直接给出入射激光脉冲的持续时间。 在500纳米（nm）下获得优于1皮秒（ps）的时间分辨率，差分差异80 ps的总测量范围。 这里描述的光学系统使得能够以简单的方式扩展测量范围。

公开(公告)号：US20120008650A1

公开(公告)日：2012-01-12

申请号：US13256068

申请日：2010-03-12

申请人： Alistair James Poustie ,  Graeme Douglas Maxwell ,  David William Smith ,  Richard Wyatt

发明人： Alistair James Poustie ,  Graeme Douglas Maxwell ,  David William Smith ,  Richard Wyatt

IPC分类号： H01S5/14

CPC分类号： H01S5/028 ,  H01S5/02248 ,  H01S5/0654 ,  H01S5/141

摘要： A hybrid integrated tuneable optical laser device, suitable for tuning to different wavelengths via a piezo micromotor (6) controlled optical filter (4) in an external cavity. Once the laser is fixed at a selected wavelength, no power is required to be applied to the wavelength tuning element to maintain the wavelength stability.

摘要翻译： 一种混合集成可调谐光学激光器件，适用于通过外部腔体中的压电微电机（6）控制的滤光器（4）调谐到不同的波长。 一旦激光器被固定在所选择的波长，则不需要将功率施加到波长调谐元件以保持波长稳定性。

公开(公告)号：US20110234432A1

公开(公告)日：2011-09-29

申请号：US13155049

申请日：2011-06-07

申请人： Stephen C. Palmer ,  Richard Wyatt

发明人： Stephen C. Palmer ,  Richard Wyatt

IPC分类号： H03M7/00

CPC分类号： H03M7/30 ,  H03M7/02

摘要： In one of many possible embodiments, a system for optimizing bit utilization in data encoding is provided. The exemplary system includes a data processing subsystem configured to identify a total number of unique characters within a set of data, which number represents an original base of representation of the set of data. The data processing subsystem is further configured to convert the set of data to a base of representation that is higher than the original base of representation and then encode the base-converted data with a fixed-length encoding scheme.

摘要翻译： 在许多可能的实施例之一中，提供了一种用于优化数据编码中的比特利用率的系统。 该示例性系统包括被配置为识别一组数据内的唯一字符的总数的数据处理子系统，该数字代表该组数据的原始表示形式。 数据处理子系统还被配置为将该组数据转换为高于原始表示基数的表示基，然后用固定长度编码方案对基本转换的数据进行编码。

公开(公告)号：US07738717B1

公开(公告)日：2010-06-15

申请号：US11474990

申请日：2006-06-27

申请人： Stephen C. Palmer ,  Richard Wyatt

发明人： Stephen C. Palmer ,  Richard Wyatt

IPC分类号： G06K9/36

CPC分类号： H03M7/30 ,  H03M7/02

摘要： In one of many possible embodiments, a system for optimizing bit utilization in data encoding is provided. The exemplary system includes a data processing subsystem configured to identify a total number of unique characters within a set of data, which number represents an original base of representation of the set of data. The data processing subsystem is further configured to convert the set of data to a base of representation that is higher than the original base of representation and then encode the base-converted data with a fixed-length encoding scheme.

摘要翻译： 在许多可能的实施例之一中，提供了一种用于优化数据编码中的比特利用率的系统。 该示例性系统包括被配置为识别一组数据内的唯一字符的总数的数据处理子系统，该数字代表该组数据的原始表示形式。 数据处理子系统还被配置为将该组数据转换为高于原始表示基数的表示基，然后用固定长度编码方案对基本转换的数据进行编码。

公开(公告)号：US07162161B2

公开(公告)日：2007-01-09

申请号：US09805377

申请日：2001-03-14

申请人： Richard Wyatt ,  Robert M. Percival ,  Raman Kashyap

发明人： Richard Wyatt ,  Robert M. Percival ,  Raman Kashyap

IPC分类号： H04B10/12

CPC分类号： G02B6/264 ,  A61F9/008 ,  A61F9/00825 ,  A61F2009/00872 ,  B23K26/064 ,  B23K26/707 ,  G02B6/14 ,  G02B6/262 ,  H01S3/005

摘要： A section of tapered optical fiber is provided to protect optical components from catastrophic damage that may propagate within an optical route. The tapered section functions as a fuse to arrest the propagation of optical power induced damage by leaking optical power from a waveguiding region below a threshold, below which further propagation of damage is not supported.

摘要翻译： 提供一段锥形光纤以保护光学部件免受可能在光学路线内传播的灾难性损坏。 锥形部分用作保险丝，以通过从低于阈值的波导区域泄漏光功率来阻止光功率引起的损伤的传播，低于该波长区域不支持进一步的损伤传播。

公开(公告)号：US20050030948A1

公开(公告)日：2005-02-10

申请号：US10880432

申请日：2004-06-29

申请人： Richard Wyatt

发明人： Richard Wyatt

IPC分类号： H04L12/44 ,  H04L12/56 ,  H04L12/28

CPC分类号： H04L49/309 ,  H04L49/25 ,  H04L49/256 ,  H04L49/30

摘要： In a switch with multiple physical links to a destination, data is forwarded to the destination by distributing received data across the physical links. A flow hash is selected for the received data's data flow dependent on a destination address and source address included in the received data. The flow hash selects one of the physical links to the destination for a data flow but potentially a different physical link for a different data flow, thereby forwarding the received data by distributing the received data across the physical links while maintaining frame ordering within a data flow.

摘要翻译： 在具有到目的地的多个物理链路的交换机中，通过在物理链路上分发接收的数据来将数据转发到目的地。 根据接收到的数据中包含的目的地地址和源地址，为接收数据的数据流选择流哈希。 流哈希为数据流选择到目的地的物理链路之一，但可能为不同数据流可能选择不同的物理链路，从而通过在物理链路上分发接收的数据来转发所接收的数据，同时保持数据流内的帧排序 。

公开(公告)号：US06628883B2

公开(公告)日：2003-09-30

申请号：US09805379

申请日：2001-03-14

申请人： Richard Wyatt ,  Robert M. Percival

发明人： Richard Wyatt ,  Robert M. Percival

IPC分类号： G02B600

CPC分类号： C03C13/046 ,  C03C3/097 ,  C03C4/0071 ,  H01S3/176

摘要： A thulium doped silica based glass capable of supporting lasing activity including Tm3+ as a lasing species disposed in a host composition, including oxides of germanium, silicon and tantalum. The preferred concentration of silicon in the host composition being between 15-25 weight percent. The preferred concentration of germanium in the host composition being between 0.1-1 weight percent. The preferred concentration of tantalum in the host composition is greater than 15 weight percent. The preferred concentration of thulium ions being in the range of 500-1000 parts per million by weight.

摘要翻译： 能够支持包括Tm <3+>的激光活性的ium掺杂二氧化硅基玻璃作为设置在包含锗，硅和钽的氧化物的主体组合物中的激光物质。 主体组合物中硅的优选浓度为15-25重量％。 主体组合物中锗的优选浓度为0.1-1重量％。 主体组合物中钽的优选浓度大于15重量％。 铊离子的优选浓度在500-1000重量份的范围内。

公开(公告)号：US5991068A

公开(公告)日：1999-11-23

申请号：US693049

申请日：1996-10-21

申请人： Jennifer Massicott ,  Richard Wyatt

发明人： Jennifer Massicott ,  Richard Wyatt

IPC分类号： H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/13 ,  H01S3/131 ,  H01S3/16

CPC分类号： H01S3/1302 ,  H01S2301/04 ,  H01S2301/06 ,  H01S3/0675 ,  H01S3/131 ,  H01S3/1608 ,  H01S3/1613

摘要： In a gain-controlled erbium-doped optical amplifier, gain control is achieved by clamping the gain of a laser cavity to be equal to the overall cavity loss and by fixing the resonant wavelength of the amplifier to be at a first wavelength. When an optical signal to be amplified having a second wavelength different from the first wavelength passes through the amplifier the gain experienced by the signal depends entirely on the gain of the cavity, and not on the intensity of the signal. If the first wavelength is arranged to be at the peak of the sum of the absorption and emission cross sections of erbium, the amplifier exhibits minimum sensitivity to ambient changes in temperature.

摘要翻译： PCT No.PCT / GB95 / 00346 Sec。 371日期1996年10月21日 102（e）日期1996年10月21日PCT提交1995年2月20日PCT公布。 第WO95 / 22847号公报 日期1995年8月24日在增益控制掺铒光放大器中，增益控制是通过将激光腔的增益钳位为等于整个腔损耗来实现的，并且通过将放大器的谐振波长固定为第一 波长。 当具有不同于第一波长的第二波长的要被放大的光信号通过放大器时，信号所经历的增益完全取决于空腔的增益，而不依赖于信号的强度。 如果第一波长被布置成铒的吸收和发射截面之和的峰值，放大器对环境温度变化表现出最小的灵敏度。

公开(公告)号：US5058124A

公开(公告)日：1991-10-15

申请号：US424284

申请日：1989-10-23

申请人： Keith H. Cameron ,  Richard Wyatt ,  John Mellis ,  Salah A. Al-Chalabi ,  Michael C. Brain

发明人： Keith H. Cameron ,  Richard Wyatt ,  John Mellis ,  Salah A. Al-Chalabi ,  Michael C. Brain

IPC分类号： H01S5/00 ,  H01S3/105 ,  H01S5/14

CPC分类号： H01S5/141 ,  H01S3/1055 ,  H01S5/02208 ,  H01S5/02284

摘要： An external cavity laser assembly in which the laser chip is within a hermetically sealed package and the external cavity is outside the hermetic package. A collimating lens in a screw threaded mounting is disposed outside the hermetic package, the screw thread permitting focussing. The cavity is turned by rotation and translation of a grating, the position of which is electrically controlled via piezoelectric stacks. Thermal expansion of the stacks is compensated by mounting the grating on a rod of suitable material (e.g., ceramic) which also serves to reduce the cavity length while allowing maximum piezoextension. In a second embodiment the assembly is a tunable laser amplifier, with a grating being driven in a similar manner to provide the tuning.