公开(公告)号：US5157683A

公开(公告)日：1992-10-20

申请号：US659389

申请日：1991-03-05

Applicant: Colin A. Millar ,  Jonathan R. Armitage

Inventor： Colin A. Millar ,  Jonathan R. Armitage

IPC: H01S3/0915 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/094 ,  H01S3/23

CPC classification number: H01S3/067 ,  H01S3/094

Abstract: The invention relates to laser systems of the type comprising optical fiber amplifiers. A laser system comprises a first laser 1 and a second laser 2. The second laser 2 is pumped at a first wavelength .lambda..sub.1 and caused to lase at a second wavelength .lambda..sub.2. The first laser 1 has absorption bands .lambda..sub.1 and .lambda..sub.2. The output .lambda..sub.2 of laser 2 and the remnant pump at .lambda..sub.1 are coupled and both are used to pump the first laser 1, thus causing laser 1 to lase at a third wavelength .lambda..sub.3.

公开(公告)号：US5224116A

公开(公告)日：1993-06-29

申请号：US959473

申请日：1992-10-09

Applicant: Timothy J. Whitley ,  Jonathan R. Armitage ,  Colin A. Millar

Inventor： Timothy J. Whitley ,  Jonathan R. Armitage ,  Colin A. Millar

IPC: H01S3/094

CPC classification number: H01S3/094003

Abstract: A laser amplifier having an improved pump efficiency for a given pump power comprises a pump source (46) longitudinally coupled at a plurality of coupling points (47, 48, 49) to an optical fibre (41). By thus coupling the pump power into the fibre (41), a fraction of the pump power is applied to the fibre (41) at each of the coupling points (47, 48, 49). A significant improvement in pump efficiency may be achieved in this way.

Abstract translation: 对于给定的泵浦功率具有改进的泵效率的激光放大器包括在多个耦合点（47,48,49）处纵向耦合到光纤（41）的泵浦源（46）。 通过将泵浦功率耦合到光纤41中，在每个耦合点（47,48,49）处，一部分泵浦功率被施加到光纤41上。 可以以这种方式实现泵效率的显着提高。

公开(公告)号：US5453873A

公开(公告)日：1995-09-26

申请号：US309136

申请日：1994-09-20

Applicant: Colin A. Millar ,  Michael C. Brierley ,  Timothy J. Whitley

Inventor： Colin A. Millar ,  Michael C. Brierley ,  Timothy J. Whitley

IPC: H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S5/00 ,  H01S3/30 ,  G02B6/26

CPC classification number: H01S3/094003 ,  H01S3/06754 ,  H01S3/094092 ,  H01S3/1608

Abstract: A laser has a resonant cavity defined by a pair of mirrors (6, 10) butted to respective ends of a 3 m fluorozirconate optical fibre (14). The fibre (14) has a .DELTA.n of 0.014 and a cut-off wavelength of around 790 nm and is doped to about 500 ppm (weight) with erbium ions. An optical pump source (12) provides a pump signal at 971 nm which excites the erbium ions into the .sup.4 S.sub.3/2 energy level to provide lasing at about 546 nm. The laser may alternatively be pumped by a pump signal in the band 791 nm to 812 nm, preferably 801 nm. The pump source is preferably a high power semiconductor laser (16).

Abstract translation: 激光器具有由一对反射镜（6,10）限定的谐振腔，对接到3μm氟锆酸盐光纤（14）的相应端。 光纤（14）具有0.014的DELTA n和约790nm的截止波长，并用铒离子掺杂到约500ppm（重量）。 光泵浦源（12）在971nm处提供泵浦信号，其将铒离子激发到4S3 / 2能级以在约546nm处提供激光。 可选地，激光器可以通过791nm至812nm，优选为801nm的波段的泵浦信号来泵浦。 泵浦源优选地是大功率半导体激光器（16）。

公开(公告)号：US4620789A

公开(公告)日：1986-11-04

申请号：US738711

申请日：1985-05-29

Applicant: Colin A. Millar

Inventor： Colin A. Millar

IPC: G01B11/26 ,  G01N21/84

CPC classification number: G01B11/26

Abstract: Features of the endface of a dielectric member are assessed by means of a reflected diffraction pattern.A plurality of light beams 6, 7 which intersect in a region containing the endface 8 can be used to generate a diffraction pattern 10 which subtends an angle of at least 180.degree. at the endface 8. Such a diffraction pattern 10 contains information about the endface 8 and may be used, in particular, to locate the plane in which the endface 8 lies.Embodiments of the invention find particular application in the measurement of endface angles of optical fibres.

Abstract translation: 通过反射衍射图来​​评估电介质构件端面的特征。 在包含端面8的区域中相交的多个光束6,7可以用于产生在端面8处对角至少180°的衍射图案10.这样的衍射图案10包含关于端面的信息 特别地，可以使用位于端面8所在的平面。 本发明的实施例在测量光纤的端面角度方面有特别的应用。

公开(公告)号：US5369523A

公开(公告)日：1994-11-29

申请号：US59412

申请日：1993-05-11

Applicant: Colin A. Millar ,  Michael C. Brierley ,  Timothy J. Whitley

Inventor： Colin A. Millar ,  Michael C. Brierley ,  Timothy J. Whitley

IPC: H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S5/00 ,  H01S3/30 ,  G02B6/26 ,  G03C13/04

CPC classification number: H01S3/094003 ,  H01S3/06754 ,  H01S3/094092 ,  H01S3/1608

Abstract: A laser has a resonant cavity defined by a pair of mirrors (6, 10) butted to respective ends of a 3 m fluorozirconate optical fibre (14). The fibre (14) has a .DELTA.n of 0.014 and a cut-off wavelength of around 790 nm and is doped to about 500 ppm (weight) with erbium ions. An optical pump source (12 ) provides a pump signal at 971 nm which excites the erbium ions into the .sup.4 S.sub.3/2 energy level to provide lasing at about 546 nm. The laser may alternatively be pumped by a pump signal in the band 791 nm to 812 nm, preferably 801 nm. The pump source is preferably a high power semiconductor laser (16).

Abstract translation: 激光器具有由一对反射镜（6,10）限定的谐振腔，对接到3μm氟锆酸盐光纤（14）的相应端。 光纤（14）具有0.014的DELTA n和约790nm的截止波长，并用铒离子掺杂到约500ppm（重量）。 光泵浦源（12）在971nm处提供泵浦信号，其将铒离子激发到4S3 / 2能级以在约546nm处提供激光。 可选地，激光器可以通过791nm至812nm，优选为801nm的波段的泵浦信号来泵浦。 泵浦源优选地是大功率半导体激光器（16）。

公开(公告)号：USRE33460E

公开(公告)日：1990-11-27

申请号：US359876

申请日：1989-05-31

Applicant: Colin A. Millar

Inventor： Colin A. Millar

IPC: G01B11/26

CPC classification number: G01B11/26

Abstract: Features of the endface of a dielectric member are assessed by means of a reflected diffraction pattern.A plurality of light beams 6, 7 which intersect in a region containing the endface 8 can be used to generate a diffraction pattern 10 which subtends an angle of at least 180.degree. at the endface 8. Such a diffraction pattern 10 contains information about the endface 8 and may be used, in particular, to locate the plane in which the endface 8 lies.Embodiments of the invention find particular application in the measurement of endface angles of optical fibres.

公开(公告)号：US5623565A

公开(公告)日：1997-04-22

申请号：US347299

申请日：1995-01-26

Applicant: Loudon T. Blair ,  Stephen A. Cassidy ,  Paul Urquhart ,  Colin A. Millar

Inventor： Loudon T. Blair ,  Stephen A. Cassidy ,  Paul Urquhart ,  Colin A. Millar

IPC: G01D5/26 ,  H04B10/272 ,  G02B6/28

CPC classification number: H04B10/272 ,  G01D5/268

Abstract: An optical communication system includes a head-end station, an optical fibre network and a number or sensors and actuators connected via the network to the head-end station. The head-end station includes one or more broadband sources and is arranged to output a broadband signal onto the network. The sensors modulate the broadband signal received from the head-end station and return narrowband components of the signal via the network to the head-end. There the different narrowband components are detected, for example using a demultiplexer and the resulting signals processed by control electronics. The head-end station also includes an optical circuit arranged to split a signal from a broadband source into different narrowband components. Electro-optic modulators (FOM) modulate the different narrowband components and the resulting narrowband signals are output onto the fibre network and transmitted to the actuators. The electro-optic modulators (FOM) are operated by the control electronics.

Abstract translation: PCT No.PCT / GB93 / 01130 Sec。 371日期1995年1月26日 102（e）日期1995年1月26日PCT提交1993年5月28日PCT公布。 公开号WO93 / 25020 PCT 日期1994年12月9日光通信系统包括头端站，光纤网络和经由网络连接到头端站的数字或传感器和致动器。 前端站包括一个或多个宽带源，并且被布置成将宽带信号输出到网络上。 传感器调制从头端站接收的宽带信号，并通过网络将信号的窄带分量返回到头端。 在那里检测不同的窄带分量，例如使用解复用器和由控制电子器件处理的结果信号。 前端站还包括光路，其被布置为将来自宽带源的信号分割成不同的窄带分量。 电光调制器（FOM）调制不同的窄带分量，并将所得的窄带信号输出到光纤网络上并传输到致动器。 电光调制器（FOM）由控制电子器件操作。

公开(公告)号：US4667862A

公开(公告)日：1987-05-26

申请号：US791141

申请日：1985-11-25

Applicant: Colin A. Millar ,  David Talbott ,  David J. Potter ,  Thomas D. S. Wood

Inventor： Colin A. Millar ,  David Talbott ,  David J. Potter ,  Thomas D. S. Wood

IPC: G02B6/00 ,  G02B6/25 ,  C03B37/16

CPC classification number: G02B6/25 ,  Y10T225/12 ,  Y10T225/321 ,  Y10T225/357 ,  Y10T83/8782 ,  Y10T83/8812

Abstract: Apparatus for cleaving an optical fibre (115) under axial tension, is provided with a cleaver blade (116) which is mounted as part of a rotatable cleaver assembly. The assembly is balanced about its axis of rotation and, as described, comprises a wheel (117) mounted on an axle (138). The cleaver blade (116) is attached to an arm which extends radially from the wheel (117). A hair spring (304) drives the assembly. The cleaving apparatus finds particular application in cleaving monomode fibres under normal working, rather than laboratory, conditions.

Abstract translation: PCT No.PCT / GB85 / 00053 Sec。 371日期：1985年11月25日 102（e）1985年11月25日日期PCT提交1985年2月8日PCT公布。 公开号WO85 / 03502 日期：1985年8月15日。用于在轴向张力下切割光纤（115）的装置设置有切割刀片（116），其被安装为可旋转切割器组件的一部分。 组件围绕其旋转轴线平衡，并且如所描述的，包括安装在轴（138）上的轮（117）。 切割刀片（116）附接到从轮（117）径向延伸的臂。 发条（304）驱动组件。 切割装置在正常工作而不是实验室条件下，特别适用于切割单模纤维。

公开(公告)号：US4497536A

公开(公告)日：1985-02-05

申请号：US497219

申请日：1983-05-27

Applicant: David B. Payne ,  Colin A. Millar

Inventor： David B. Payne ,  Colin A. Millar

IPC: G02B6/255 ,  G02B6/26 ,  G02B6/28 ,  G02B6/32 ,  G02B6/38 ,  G02B7/26

CPC classification number: G02B6/3841 ,  G02B6/2552 ,  G02B6/262 ,  G02B6/2817 ,  G02B6/32 ,  G02B6/3825 ,  G02B6/3874 ,  G02B6/3827 ,  G02B6/3829

Abstract: A technique for aligning and coupling dielectric optical waveguides comprises threading the end of a waveguide through the central opening of a triad ball connector and forming by fusion a generally spherical glass bead on the end of the waveguide using, for example, an electric arc. The waveguide is then drawn back so that the bead contacts the balls of the triad connector to accurately locate the waveguide. The bead acts as a locating element and also has beneficial focussing properties.

Abstract translation: 用于对准和耦合电介质光波导的技术包括将波导的端部穿过三联形球连接器的中心孔，并通过使用例如电弧在波导端部上的大致球形的玻璃珠熔合而形成。 然后将波导拉回，使得珠与三单元连接器的球接触以精确地定位波导。 珠作为定位元件，并且还具有有益的聚焦特性。

公开(公告)号：US4881791A

公开(公告)日：1989-11-21

申请号：US288036

申请日：1988-12-19

Applicant: Stephen R. Mallinson ,  Colin A. Millar

Inventor： Stephen R. Mallinson ,  Colin A. Millar

IPC: G02B6/293 ,  G02B6/34 ,  G02F1/01 ,  H01S3/067 ,  H01S5/125

CPC classification number: G02B6/02061 ,  G02F1/011 ,  H01S3/0675 ,  G02B6/29317 ,  H01S5/125

Abstract: 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.