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1. 发明申请

WO2003079065A3 TUNEABLE OPTICAL WAVEGUIDE GRATING TRANSMISSION FILTER 审中-公开
公开(公告)号：WO2003079065A3
公开(公告)日：2003-09-25
申请号：PCT/GB2003/001117
申请日：2003-03-14
申请人： ASTON PHOTONIC TECHNOLOGIES LTD , RHEAD, Philip, Mark , Shu, Xuewen , Lloyd Glynn David
发明人： RHEAD, Philip, Mark , Shu, Xuewen , Lloyd Glynn David
IPC分类号： G02B6/34
摘要： A tuneable fibre grating transmission filter (10) comprising an optical fibre (12) including a grating section (14) in which a fibre Bragg grating (16) having one or more phase-shifts within its periodic refractive index variation, is provided, and tuning means, in the form of mechanical tuning apparatus (18), to which the grating section (14) is coupled. The tuning apparatus (18) is operable to apply a variable axial strain to the grating section (14) to thereby tune the wavelength of the grating (16). The fibre (12) may be optically coupled to a second fibre, including a second grating section in which a broadband transmission filter inn the form of chirped fibre Bragg grating is provided. The chirped grating has a spectral profile including a pass band of substantially the same bandwidth and covering substantially the same wavelengths as the stop bands and the pass band of the phase-shifted grating (16).

2. 发明申请

WO2003079065A2 TUNEABLE OPTICAL WAVEGUIDE GRATING TRANSMISSION FILTER 审中-公开
标题翻译：可调式光波导传输滤波器
公开(公告)号：WO2003079065A2
公开(公告)日：2003-09-25
申请号：PCT/GB2003/001117
申请日：2003-03-14
申请人： ASTON PHOTONIC TECHNOLOGIES LTD , RHEAD, Philip, Mark , Shu, Xuewen , Lloyd Glynn David
发明人： RHEAD, Philip, Mark , Shu, Xuewen , Lloyd Glynn David
IPC分类号： G02B6/00
CPC分类号： G02B6/29317 , G02B6/022 , G02B6/29322 , G02B6/29395 , G02B6/29398
摘要： A tuneable fibre grating transmission filter (10) comprising an optical fibre (12) including a grating section (14) in which a fibre Bragg grating (16) having one or more phase-shifts within its periodic refractive index variation, is provided, and tuning means, in the form of mechanical tuning apparatus (18), to which the grating section (14) is coupled. The tuning apparatus (18) is operable to apply a variable axial strain to the grating section (14) to thereby tune the wavelength of the grating (16). The fibre (12) may be optically coupled to a second fibre, including a second grating section in which a broadband transmission filter inn the form of chirped fibre Bragg grating is provided. The chirped grating has a spectral profile including a pass band of substantially the same bandwidth and covering substantially the same wavelengths as the stop bands and the pass band of the phase-shifted grating (16).
摘要翻译：一种可调光纤光栅传输滤波器（10），包括光纤（12），其包括光栅部分（14），其中在其周期性折射率变化内具有一个或多个相移的光纤布拉格光栅（16），以及调谐装置，以机械调谐装置（18）的形式，光栅部分（14）耦合到该调谐装置。调谐装置（18）可操作以向光栅部分（14）施加可变轴向应变，从而调节光栅（16）的波长。光纤（12）可以光学耦合到第二光纤，包括第二光栅部分，其中提供有啁啾光纤布拉格光栅形式的宽带传输滤波器。啁啾光栅具有包括基本上相同带宽的通带并且覆盖与相移光栅（16）的阻带和通带基本相同的波长的光谱分布。

3. 发明申请

WO2003038493A1 DUAL-PARAMETER OPTICAL WAVEGUIDE GRATING SENSING DEVICE AND SENSOR 审中-公开
标题翻译：双参数光波导光栅感应器和传感器
公开(公告)号：WO2003038493A1
公开(公告)日：2003-05-08
申请号：PCT/GB2002/004413
申请日：2002-09-27
申请人： ASTON PHOTONIC TECHNOLOGIES LTD. , SHU, Xuewen , LIU, Yu , ZHAO, Donghui , ZHANG, Lin , BENNION, Ian , GWANDU, Bashir, Aliyu, Labbo , FLOREANI, Filip
发明人： SHU, Xuewen , LIU, Yu , ZHAO, Donghui , ZHANG, Lin , BENNION, Ian , GWANDU, Bashir, Aliyu, Labbo , FLOREANI, Filip
IPC分类号： G02B6/16
CPC分类号： G01L1/246 , G01B11/165 , G01K11/32 , G01K11/3206 , G02B6/022 , G02B6/02204
摘要： In the present invention an optical waveguide grating sensing device for a dual-parameter optical waveguide grating sensor includes a first optical waveguide grating of a first resonant wavelength provided in a first section of an optical waveguide and a second optical waveguide grating of a second resonant wavelength provided in a second of an optical wavelguide. The first and second gratings have different coefficients of rate of change of wavelength as a function of temperature and have substantially the same coefficient of rate of change of wavelength as a function of stain.
摘要翻译：在本发明中，用于双参数光波导光栅传感器的光波导光栅感测装置包括设置在光波导的第一部分中的第一谐振波长的第一光波导光栅和第二谐振波长的第二光波导光栅设置在光学波片的第二个中。第一和第二光栅具有不同的波长变化系数作为温度的函数，并且具有与污点函数基本上相同的波长变化系数。

4. 发明申请

WO2008129253A2 DISPERSION COMPENSATION 审中-公开
标题翻译：分散补偿
公开(公告)号：WO2008129253A2
公开(公告)日：2008-10-30
申请号：PCT/GB2008/001353
申请日：2008-04-16
申请人： ASTON UNIVERSITY , SUGDEN, Catherine, Anne , SHU, Xuewen , TURITSYNA, Elena
发明人： SUGDEN, Catherine, Anne , SHU, Xuewen , TURITSYNA, Elena
IPC分类号： H04B10/18
CPC分类号： H04B10/2519
摘要： Tuneable dispersion slope compensation by employing two waveguide gratings (2, 3) which, within their respective operating spectra, display substantially oppositely varying group delay or dispersion profiles (21, 22), and adjusting, translating or tuning the relative wavelength positions of those profiles to produce the desired dispersion slope and dispersion characteristics for the grating pair. This enables that substantially only the dispersion slope is tuned as a result of the relative wavelength adjustment, and substantially no additional undesired dispersion is introduced. Also, the tuning methodology is simple, requiring no complex tuning methodology or mechanisms.
摘要翻译：通过使用两个波导光栅（2,3）来调节，平移或调谐这些轮廓的相对波长位置（2,3），该波导光栅在它们各自的工作频谱内显示出基本上相反变化的组延迟或色散曲线（21,22）以产生用于光栅对的期望的色散斜率和色散特性。这使得基本上只有色散斜率作为相对波长调整的结果被调谐，并且基本上没有引入附加的不需要的色散。此外，调优方法很简单，不需要复杂的调优方法或机制。

5. 发明申请

WO2006072759A3 ACOUSTICALLY TUNED BRAGG GRATINGS FOR DISPERSION COMPENSATION 审中-公开
标题翻译：用于分散补偿的有声调谐布拉格曲线
公开(公告)号：WO2006072759A3
公开(公告)日：2006-09-14
申请号：PCT/GB2005004838
申请日：2005-12-15
申请人： UNIV ASTON , SHU XUEWEN , SUGDEN CATHERINE ANNE , BENNION IAN
发明人： SHU XUEWEN , SUGDEN CATHERINE ANNE , BENNION IAN
IPC分类号： G02B6/293 , G02B6/02 , G02B6/34 , G02F1/125
CPC分类号： G02B6/29356 , G02B6/02195 , G02B6/2932 , G02B6/29394 , G02B6/29395 , G02F1/125 , G02F2201/307
摘要： A Gires-Tournois etalon (GTE) (10) comprising an optical fibre (12) in which a primary chirped fibre Bragg grating (FBG) (16) is provided, an RF signal generator (20), a piezoelectric transducer (22), and a glass horn (24), for coupling an acoustic wave (26) into the fibre (12). The acoustic wave (26) causes a periodic compression within the fibre (12), which induces a low frequency periodic refractive index modulation within the grating section (14) of the fibre (12). This causes two side frequency components to be generated for each high-frequency component of the FBG (16). Two secondary grating are thus excited, having the same spectral bandwidth as the FBG (16), but a lower reflectivity and different central wavelengths. The free spectral range of the GTE (10) can be adjusted by varying the frequency of the acoustic wave (26). The reflectivity of the excited secondary gratings can be adjusted by adjusting the amplitude of the acoustic wave (26).
摘要翻译：一种包括提供初级啁啾光纤布拉格光栅（FBG）（16）的光纤（12）的Gires-Tournois标准具（GTE）（10），RF信号发生器（20），压电换能器（22）以及用于将声波（26）耦合到所述光纤（12）中的玻璃喇叭（24）。声波（26）引起光纤（12）内的周期性压缩，其在光纤（12）的光栅部分（14）内引起低频周期性折射率调制。这导致为FBG（16）的每个高频分量产生两个侧频分量。因此，两个次级光栅被激发，具有与FBG（16）相同的光谱带宽，但是较低的反射率和不同的中心波长。可以通过改变声波的频率来调节GTE（10）的自由光谱范围（26）。激发的次级光栅的反射率可以通过调节声波的振幅来调节（26）。

6. 发明申请

WO2003096082A3 GIRES-TOURNOIS ETALONS AND DISPERSION COMPENSATION 审中-公开
公开(公告)号：WO2003096082A3
公开(公告)日：2003-11-20
申请号：PCT/GB2003/002046
申请日：2003-05-13
申请人： ASTON PHOTONIC TECHNOLOGIES LTD , SHU, Xuewen , BYRON, Kevin, Christopher , KENNEDY, Lee, Ann , SUGDEN, Catherine, Anne
发明人： SHU, Xuewen , BYRON, Kevin, Christopher , KENNEDY, Lee, Ann , SUGDEN, Catherine, Anne
IPC分类号： G02B6/12
摘要： A first embodiment of the invention provides a Gires-Tournois etalon (DGTE) (20) comprising a cladding mode suppressed optical fibre (22), including an etalon section (24) in which a weakly reflective optical waveguide grating (26) and a strongly reflective optical waveguide grating (28) are provided. The two gratings (26, 28) are chirped fibre Bragg gratings (FBGs). The chirped FBGs (26, 28) are arranged to together define an etalon cavity. Another aspect of the invention provides a dispersion compensator (60) comprising two DGTEs (62, 64) according to the first embodiment of the invention. The DGTEs (62, 64) have a linearly varying dispersion over a selected optical bandwidth. The first DGTE (62) has a positive dispersion slope and the second DGTE (64) has a negative dispersion slope. The magnitudes of the dispersion slopes of the two DGTEs (62, 64) are substantially equal, so that the dispersion compensator (60) has a constant dispersion across the selected bandwidth. The DGTEs (62, 64) are optically coupled to one another via a four-port optical circulator (66).

7. 发明申请

WO2008129253A3 DISPERSION COMPENSATION 审中-公开
标题翻译：分散补偿
公开(公告)号：WO2008129253A3
公开(公告)日：2008-12-11
申请号：PCT/GB2008001353
申请日：2008-04-16
申请人： UNIV ASTON , SUGDEN CATHERINE ANNE , SHU XUEWEN , TURITSYNA ELENA
发明人： SUGDEN CATHERINE ANNE , SHU XUEWEN , TURITSYNA ELENA
IPC分类号： H04B10/2519
CPC分类号： H04B10/2519
摘要： Tuneable dispersion slope compensation by employing two waveguide gratings (2, 3) which, within their' respective operating spectra, display substantially oppositely varying group delay or dispersion profiles (21, 22), and adjusting, translating or tuning the relative wavelength positions of those profiles to produce the desired dispersion slope and dispersion characteristics for the grating pair. This enables that substantially only the dispersion slope is tuned as a result of the relative wavelength adjustment, and substantially no additional undesired dispersion is introduced. Also, the tuning methodology is simple, requiring no complex tuning methodology or mechanisms. The gratings have a third order group delay characteristic.
摘要翻译：通过使用两个波导光栅（2,3），其在其各自的工作光谱内显示基本相反的变化的组延迟或色散曲线（21,22），以及调整，平移或调谐这些波长位置的相对波长位置以产生所需的色散斜率和光栅对的色散特性。这使得基本上只有色散斜率作为相对波长调整的结果被调谐，并且基本上没有引入附加的不需要的色散。此外，调优方法很简单，不需要复杂的调优方法或机制。光栅具有三阶组延迟特性。

8. 发明申请

WO2006072759A2 GIRES-TOURNOIS ETALONS AND DISPERSION COMPENSATORS 审中-公开
标题翻译： GIRES-TOURNOIS ETALONS和DISPERSION COMPENSATORS
公开(公告)号：WO2006072759A2
公开(公告)日：2006-07-13
申请号：PCT/GB2005/004838
申请日：2005-12-15
申请人： ASTON UNIVERSITY , SHU, Xuewen , SUGDEN, Catherine, Anne , BENNION, Ian
发明人： SHU, Xuewen , SUGDEN, Catherine, Anne , BENNION, Ian
IPC分类号： G02B6/293 , G02B6/02 , G02F1/125
CPC分类号： G02B6/29356 , G02B6/02195 , G02B6/2932 , G02B6/29394 , G02B6/29395 , G02F1/125 , G02F2201/307
摘要： A Gires-Tournois etalon (GTE) (10) comprising an optical fibre (12) in which a primary chirped fibre Bragg grating (FBG) (16) is provided, an RF signal generator (20), a piezoelectric transducer (22), and a glass horn (24), for coupling an acoustic wave (26) into the fibre (12). The acoustic wave (26) causes a periodic compression within the fibre (12), which induces a low frequency periodic refractive index modulation within the grating section (14) of the fibre (12). This causes two side frequency components to be generated for each high-frequency component of the FBG (16). Two secondary grating are thus excited, having the same spectral bandwidth as the FBG (16), but a lower reflectivity and different central wavelengths. The free spectral range of the GTE (10) can be adjusted by varying the frequency of the acoustic wave (26). The reflectivity of the excited secondary gratings can be adjusted by adjusting the amplitude of the acoustic wave (26).
摘要翻译：包括其中设置有主啁啾光纤布拉格光栅（FBG）（16））的光纤（12）的Gires-Tournois标准具（GTE）（10），RF信号发生器（20），压电换能器（22）和用于将声波（26）耦合到光纤（12）中的玻璃喇叭（24）。声波（26）引起光纤（12）内的周期性压缩，其在光纤（12）的光栅部分（14）内引起低频周期性折射率调制。这导致为FBG（16）的每个高频分量产生两个侧频分量。因此，两个次级光栅被激发，具有与FBG（16）相同的光谱带宽，但是较低的反射率和不同的中心波长。 GTE（10）的自由光谱范围可以通过改变声波的频率来调节（26）。激发的二次光栅的反射率可以通过调节声波的振幅来调节（26）。

9. 发明申请

WO2003096082A2 GIRES-TOURNOIS ETALONS AND DISPERSION COMPENSATION 审中-公开
标题翻译：女童巡回赛和散打补偿
公开(公告)号：WO2003096082A2
公开(公告)日：2003-11-20
申请号：PCT/GB2003/002046
申请日：2003-05-13
申请人： ASTON PHOTONIC TECHNOLOGIES LTD , SHU, Xuewen , BYRON, Kevin, Christopher , KENNEDY, Lee, Ann , SUGDEN, Catherine, Anne
发明人： SHU, Xuewen , BYRON, Kevin, Christopher , KENNEDY, Lee, Ann , SUGDEN, Catherine, Anne
IPC分类号： G02B6/00
CPC分类号： G02B6/29358 , G02B6/02085 , G02B6/12007 , H04B10/2519
摘要： A first embodiment of the invention provides a Gires-Tournois etalon (DGTE) (20) comprising a cladding mode suppressed optical fibre (22), including an etalon section (24) in which a weakly reflective optical waveguide grating (26) and a strongly reflective optical waveguide grating (28) are provided. The two gratings (26, 28) are chirped fibre Bragg gratings (FBGs). The chirped FBGs (26, 28) are arranged to together define an etalon cavity. Another aspect of the invention provides a dispersion compensator (60) comprising two DGTEs (62, 64) according to the first embodiment of the invention. The DGTEs (62, 64) have a linearly varying dispersion over a selected optical bandwidth. The first DGTE (62) has a positive dispersion slope and the second DGTE (64) has a negative dispersion slope. The magnitudes of the dispersion slopes of the two DGTEs (62, 64) are substantially equal, so that the dispersion compensator (60) has a constant dispersion across the selected bandwidth. The DGTEs (62, 64) are optically coupled to one another via a four-port optical circulator (66).
摘要翻译：本发明的第一实施例提供了一种包括包层模式抑制光纤（22）的Gires-Tournois标准具（20），其包括标准具部分（24），其中弱反射光波导光栅（26）和强反射光波导光栅反射光波导光栅（28）。两个光栅（26,28）是啁啾光纤布拉格光栅（FBG）。啁啾的FBG（26,28）被布置成一起限定标准具腔。本发明的另一方面提供一种包括根据本发明的第一实施例的两个DGTE（62,64）的色散补偿器（60）。 DGTE（62,64）在选定的光学带宽上具有线性变化的色散。第一DGTE（62）具有正色散斜率，第二DGTE（64）具有负色散斜率。两个DGTE（62,64）的色散斜率的大小基本相等，使得色散补偿器（60）在所选择的带宽上具有恒定色散。 DGTE（62,64）通过四端口光循环器（66）彼此光耦合。

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