专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO9834138A3 OPTICAL DEVICE 审中-公开
标题翻译：光学器件
公开(公告)号：WO9834138A3
公开(公告)日：1998-11-12
申请号：PCT/GB9800293
申请日：1998-01-30
申请人： UNIV SOUTHAMPTON , FARWELL SELINA GAIL , LAMING RICHARD IAN , ZERVAS MICHAEL NICKOLAOS , CULVERHOUSE DAVID
发明人： FARWELL SELINA GAIL , LAMING RICHARD IAN , ZERVAS MICHAEL NICKOLAOS , CULVERHOUSE DAVID
IPC分类号： G02B6/28 , G02F1/01 , G02B6/287 , G02F1/335
CPC分类号： G02B6/2835 , G02F1/0134
摘要： An optical fibre device comprising an optical fibre coupler formed of two or more optical fibres fused together at a coupling region, at least a part of the coupling region being asymmetrical across its cross section. In summary, at least preferred embodiments of the invention provide a method of manufacturing polarisation insensitive couplers is achieved in asymmetric couplers by precisely controlling the cross-sectional shape. The shape required will depend on the extent of the dissimilarity between the input waveguides and possibly the size of the waveguide. The four-fold symmetry in the present couplers is broken either by the two input waveguides having different outer dimension and/or any other fibre parameter. The fibre parameters differing in the two input waveguides could be any of (a) outer cladding dimension, (b) cladding refractive index, (c) numerical aperture and (d) code dimension. A method of manufacturing an asymmetric coupler by progressive stretching, wherein the birefringence in the coupler resulting from the progressive stretching is substantially removed by precise control of the waist cross-sectional shape. Particular attention must be paid to the temperature distribution along the stretched region of glass in order to fabricate couplers with a uniform degree of fusion along their length.
摘要翻译：一种光纤装置，包括由在耦合区域熔合在一起的两个或多个光纤形成的光纤耦合器，耦合区域的至少一部分在其横截面上是不对称的。总之，本发明的至少优选实施例提供了一种制造偏振不敏感耦合器的方法，其通过精确地控制横截面形状而在非对称耦合器中实现。所需的形状将取决于输入波导之间的不相似程度以及可能的波导尺寸。通过具有不同外部尺寸和/或任何其他光纤参数的两个输入波导来破坏本耦合器中的四重对称性。两个输入波导中不同的光纤参数可以是（a）外包层尺寸，（b）包层折射率，（c）数值孔径和（d）代码尺寸中的任何一个。一种通过渐进拉伸制造不对称耦合器的方法，其中由渐进拉伸产生的耦合器中的双折射基本上通过精确控制腰部横截面形状而消除。必须特别注意沿玻璃拉伸区域的温度分布，以便制造沿其长度具有均匀融合度的耦合器。

2. 发明申请

WO9811463A3 OPTICAL FIBRE DEVICE 审中-公开
标题翻译：光纤设备
公开(公告)号：WO9811463A3
公开(公告)日：1998-04-30
申请号：PCT/GB9702449
申请日：1997-09-10
申请人： UNIV SOUTHAMPTON , LAMING RICHARD IAN , RICHARDSON D J , CULVERHOUSE DAVID , YUN SEOK HYUN , FARWELL SELINA G , ZERVAS MICHAEL NICKOLOAS , BIRKS TIMOTHY ADAM
发明人： LAMING RICHARD IAN , RICHARDSON D J , CULVERHOUSE DAVID , YUN SEOK HYUN , FARWELL SELINA G , ZERVAS MICHAEL NICKOLOAS , BIRKS TIMOTHY ADAM
IPC分类号： G02F1/01 , G02F1/313 , G02B6/28 , G02F1/335
CPC分类号： G02F1/0134 , G02F1/3131
摘要： An optical fibre device comprises an optical fibre null coupler (10) formed of two or more optical fibres (20, 30) fused together at a coupling region, at least a part of the coupling region being mechanically twisted substantially about a longitudinal axis of the coupling region. The twisting can alleviate the polarisation dependance observed in untwisted null coupler devices. 00000
摘要翻译：一种光纤装置包括由在耦合区域处熔合在一起的两个或多个光纤（20,30）形成的光纤空接合器（10），所述耦合区域的至少一部分基本上围绕耦合区域。扭转可以减轻在未扭转零耦合器件中观察到的极化依赖性。 00000

3. 发明专利

CA2221167C OPTICAL WAVEGUIDE GRATING 未知
公开(公告)号：CA2221167C
公开(公告)日：2006-10-03
申请号：CA2221167
申请日：1996-05-14
申请人： UNIV SOUTHAMPTON
发明人： ZERVAS MICHAEL NICKOLAOS , COLE MARTIN , LOH WEI-HUNG , LAMING RICHARD IAN
IPC分类号： G02B5/18 , G02B6/136 , G02B5/26 , G02B6/02 , G02B6/10 , G02B6/34
摘要： A method of forming optical waveguide gratings, such as in-fibre gratings, is described. The gratings are formed optically, with a phase mask being scanned by a writing laser beam to generate the grating pattern. The waveguide and phase mask are moved with respect to one another during the writing process, to vary the grating properties along the length of the grating. Relative movement in a single direction provides a change of grating pitch, and so can be used to fabricate chirped or multi-wavelength gratings. Bi-directional dither alters the strength of the grating, and so can be used to fabricate apodised gratings.

4. 发明专利

AU725596B2 Optical coupler and/or multiplexer 未知
公开(公告)号：AU725596B2
公开(公告)日：2000-10-12
申请号：AU7064398
申请日：1998-04-20
申请人： UNIV SOUTHAMPTON
发明人： LAMING RICHARD IAN , DONG LIANG
IPC分类号： G02B6/293 , G02B6/28 , G02B6/34 , G02B6/287
摘要： An optical fiber coupler has at least an m-core optical fiber optically coupled to an n-core optical fiber, where m and n are positive integers and m is greater than 1. A channel add/drop multiplexer includes an optical fiber coupler and a Bragg grating disposed on the m-core fiber outside the coupling region.

5. 发明专利

CA2320769A1 OPTICAL DEVICE 未知
公开(公告)号：CA2320769A1
公开(公告)日：1999-08-26
申请号：CA2320769
申请日：1999-02-19
申请人： UNIV SOUTHAMPTON
发明人： LAMING RICHARD IAN , ZERVAS MICHAEL NICKOLAOS
IPC分类号： G02B6/02 , G02B6/255 , G02B6/28 , G02B6/287 , G02B6/293 , G02B6/34
摘要： An optical device comprises a multicore optical fibre having m circularly symmetric cores where m1, the multicore optical fibre having a region of steadily narrowing cross-sectional area. This invention also provides an optical coupler comprising a multicore optical fibre having m circularly symmetric cores optically coupled at a narrowed coupling region to another optical fibre having n cores, where m and n are positive integers and m is greater than 1, the multicore optical fibre having regions of steadily varying cross-sectional area linking the narrowed coupling region to non-narrowed regions of the multicore optical fibre.

6. 发明专利

GB2327130A Chirped apodised optical fibre grating 未知
公开(公告)号：GB2327130A
公开(公告)日：1999-01-13
申请号：GB9713939
申请日：1997-07-01
申请人： UNIV SOUTHAMPTON , PIRELLI CAVI E SISTEMI SPA
发明人： LAMING RICHARD IAN , DURKIN MICHAEL KEVAN , GUSMEROLI VALERIA
IPC分类号： G02B6/34 , G02B6/02
摘要： A method of fabricating a chirped optical fibre grating 5 so that the grating has a predetermined desired wavelength-dependent response across an operational bandwidth comprises apodising the grating so that a degree of apodisation at a longitudinal position along the grating corresponds to the desired response at the optical wavelength reflected at that longitudinal position along the grating. A method of fabricating a chirped optic fibre grating having a flat wavelength-dependent response across an operational bandwidth comprises apodising the grating so that a degree of apodisation at a longitudinal position along the grating provides a degree of loss complementary to that of the grating before apodisation. A chirped optic fibre grating has an asymmetric or monotonically varying profile.

7. 发明专利

NZ307598A OPTICAL WAVEGUIDE GRATING IS FORMED OPTICALLY WITH A PHASE MASK BEING SCANNED BY A WRITING LASER BEAM 未知
公开(公告)号：NZ307598A
公开(公告)日：1998-04-27
申请号：NZ30759896
申请日：1996-05-14
申请人： UNIV SOUTHAMPTON
发明人： COLE MARTIN , LOH WE-HUNG , LAMING RICHARD IAN , ZERVAS MICHAEL NICKOLAOS
IPC分类号： G02B5/18 , G02B5/26 , G02B6/02 , G02B6/10 , G02B6/136 , G02B6/34 , G02B6/16

8. 发明专利

GB2316761A Chirped optical fibre grating 未知
公开(公告)号：GB2316761A
公开(公告)日：1998-03-04
申请号：GB9617689
申请日：1996-08-23
申请人： UNIV SOUTHAMPTON
发明人： LAMING RICHARD IAN , LOH WEI-HUNG
IPC分类号： G02B6/02 , G02B6/024 , G02B6/34 , H04B10/02 , H04B10/18 , G02B6/00
摘要： A chirped optical fibre grating 100, 110 is formed by impressing a chirped substantially periodic refractive index variation on a polarisation-maintaining optical fibre. This grating may be used for at least partial dispersion compensation in an optical fibre transmission system

9. 发明专利

CA2230439A1 OPTICAL WAVEGUIDE, WAVEGUIDE AMPLIFIER AND LASER 未知
公开(公告)号：CA2230439A1
公开(公告)日：1997-03-06
申请号：CA2230439
申请日：1996-08-23
申请人： UNIV SOUTHAMPTON
发明人： BROCKLESBY WILLIAM SIMON , PAYNE DAVID NEIL , LAMING RICHARD IAN , SAMSON BRYCE NEILSON , HEWAK DANIEL WILLIAM
IPC分类号： H01S3/06 , C03C3/32 , C03C4/00 , C03C13/04 , H01S3/067 , H01S3/10 , H01S3/16
摘要： An optical fibre amplifier, laser or superluminescent source, consisting of a chalcogenide glass matrix hosting trivalent rare earth ions and which is doped with oxide in the form of a metallic oxide. The device utilizes the properties of the added oxide to improve the fabrication and efficiency of optical waveguide sources, in particular for applications around 1.3 .mu.m. Specifically, the oxide broadens the wavelenght range for pump absorption, broadens the wavelength range for light emission, increases the device efficiency through a change in lifetime of certain laser levels and modifies properties of the glass to prevent crystallization during fibre fabrication. The device exploits the intentional addition of oxide to improve amplifier, laser, glass and fibre properties.

10. 发明专利

CA2328925C OPTICAL FIBRE LASER 未知
公开(公告)号：CA2328925C
公开(公告)日：2008-09-30
申请号：CA2328925
申请日：1999-04-09
申请人： UNIV SOUTHAMPTON
发明人： YAMASHITA SHINJI , IBSEN MORTEN , SET SZE YUN , RONNEKLEIV ERLAND , LAMING RICHARD IAN , ZERVAS MICHAEL NICKOLAOS
IPC分类号： G02B6/02 , H01S3/06 , G02F1/35 , H01S3/067
摘要： A method of fabricating a distributed feedback optical fibre laser, comprise s the step of exposing an optical fibre (20) to a transverse light beam (30) to form a grating structure in a section of the optical fibr e, the writing light beam being polarised in a direction not parallel to the axis of the section (10) of optical fibre (20).

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式