公开(公告)号：US09379821B2

公开(公告)日：2016-06-28

申请号：US13627522

申请日：2012-09-26

申请人： Wei-Hua Guo ,  John F. Donegan ,  Qiaoyin Lu

发明人： Wei-Hua Guo ,  John F. Donegan ,  Qiaoyin Lu

IPC分类号： H04B10/61 ,  G02B27/28 ,  G02F1/01

CPC分类号： H04B10/61 ,  G02B27/283 ,  G02F2001/0144 ,  H04B10/614

摘要： The invention provides a solution for the full integration of a coherent receiver on Indium Phosphide (InP) or other material that has a number of advantages over current coherent receiver design. PIN waveguides can be reverse biased and forward biased to modify the mode effective index so as to realize an integrated polarization beam splitting function and the 90 degree optical hybrid. The fabrication tolerance is therefore greatly increased; resulting in much reduced complexity and cost for the final receiver.

摘要翻译： 本发明提供了一种用于将磷灰石（InP）或其他材料的相干接收器完全集成在一起的解决方案，其具有超过电流相干接收器设计的许多优点。 PIN波导可以被反向偏置并且被正向偏置以修改模式有效指数，以便实现集成偏振分束功能和90度光学混合。 因此，制造公差大大增加; 导致最终接收机的复杂性和成本大大降低。

公开(公告)号：US20130077980A1

公开(公告)日：2013-03-28

申请号：US13627522

申请日：2012-09-26

申请人： Wei-Hua Guo ,  John F. Donegan ,  Qiaoyin Lu

发明人： Wei-Hua Guo ,  John F. Donegan ,  Qiaoyin Lu

IPC分类号： H04B10/61

CPC分类号： H04B10/61 ,  G02B27/283 ,  G02F2001/0144 ,  H04B10/614

摘要： The invention provides a solution for the full integration of a coherent receiver on Indium Phosphide (InP) or other material that has a number of advantages over current coherent receiver design. PIN waveguides can be reverse biased and forward biased to modify the mode effective index so as to realize an integrated polarization beam splitting function and the 90 degree optical hybrid. The fabrication tolerance is therefore greatly increased; resulting in much reduced complexity and cost for the final receiver.

摘要翻译： 本发明提供了一种用于将磷灰石（InP）或其他材料的相干接收器完全集成在一起的解决方案，其具有超过电流相干接收器设计的许多优点。 PIN波导可以被反向偏置并且被正向偏置以修改模式有效指数，以便实现集成偏振分束功能和90度光学混合。 因此，制造公差大大增加; 导致最终接收机的复杂性和成本大大降低。

公开(公告)号：US08238388B2

公开(公告)日：2012-08-07

申请号：US12442244

申请日：2007-09-20

申请人： John F. Donegan ,  Richard Phelan ,  Wei-Hua Guo ,  Qiao-Yin Lu ,  Brian Corbett ,  Paul Martin Lambkin ,  Brendan John Roycroft

发明人： John F. Donegan ,  Richard Phelan ,  Wei-Hua Guo ,  Qiao-Yin Lu ,  Brian Corbett ,  Paul Martin Lambkin ,  Brendan John Roycroft

IPC分类号： H01S3/098 ,  H01S3/10

CPC分类号： H01S5/1021 ,  H01S5/026 ,  H01S5/0265 ,  H01S5/06255 ,  H01S5/0654 ,  H01S5/1017 ,  H01S5/1039 ,  H01S5/1237 ,  H01S5/125

摘要： A tunable laser device (1) comprises integrally formed first and second ridge waveguides (5, 6). A longitudinally extending ridge (12) defines first and second light guiding regions (19, 20) of the first and second waveguides (5, 6) A plurality of first and second slots (27, 28) extending laterally in the ridge (12) adjacent the first and second waveguides (5, 6), produce first and second mirror loss spectra of the respective first and second waveguides (5, 6) with minimum peak values at respective first and second wavelength values. The spacing between the second slots (28) is different to that between the first slots (27) so that with one exception the minimum peak values of the first and second mirror loss spectrum occur at different wavelength values. The first and second waveguides (5, 6) are independently pumped with variable currents to selectively vary the common wavelength at which the minimum peak values of the first and second mirror loss spectra occur to produce Vernier tuning of the device.

摘要翻译： 可调谐激光装置（1）包括一体形成的第一和第二脊状波导（5,6）。 纵向延伸的脊（12）限定第一和第二波导（5,6）的第一和第二导光区域（19,20）。在脊部（12）中横向延伸的多个第一和第二狭槽（27,28） 邻近第一和第二波导（5,6），在相应的第一和第二波长值处产生具有最小峰值的相应的第一和第二波导（5,6）的第一和第二镜损耗谱。 第二时隙（28）之间的间隔与第一时隙（27）之间的间隔不同，因此除了第一和第二镜损耗光谱的最小峰值出现在不同的波长值之外。 第一和第二波导（5,6）独立地用可变电流泵送，以选择性地改变第一和第二镜损耗光谱的最小峰值出现以产生器件的游标调谐的共同波长。

公开(公告)号：US20120293804A1

公开(公告)日：2012-11-22

申请号：US13500796

申请日：2010-10-11

申请人： Wei-Hua Guo ,  Edward Flood ,  John F. Donegan

发明人： Wei-Hua Guo ,  Edward Flood ,  John F. Donegan

IPC分类号： G01B9/02

CPC分类号： H04B10/07953

摘要： The invention provides a system and method for measuring optical signal-to-noise-ratio (OSNR) in an optical communication system. A channel filter is adapted to select one specific optical communication channel from a wavelength-division-multiplexing (WDM) optical communication system, wherein the channel comprises an optical signal carrying digital bit information and noise from associated optical power amplifiers in the system. At least one optical delay interferometer is adapted to measure at least two interferograms of the noisy signal. The invention provides a mechanism for calculating the in-band OSNR from extinctions of the interferograms measured at different optical delays by referring to each other, wherein said optical delays are selected to be substantially less than a bit period of the optical channel. Because of the selection of the optical delays and/or the self-reference between the two measurements, the system can follow any changes happening to the signal such as additional filtering, self (cross)-phase modulation, the bias and drive signal change of the modulator used to generate the optical signal.

摘要翻译： 本发明提供了一种用于在光通信系统中测量光信噪比（OSNR）的系统和方法。 信道滤波器适于从波分复用（WDM）光通信系统中选择一个特定的光通信信道，其中信道包括承载数字比特信息的光信号和系统中相关联的光功率放大器的噪声。 至少一个光学延迟干涉仪适于测量噪声信号的至少两个干涉图。 本发明提供了一种用于通过参照彼此在不同光学延迟测量的干涉图的消逝来计算带内OSNR的机制，其中所述光学延迟被选择为基本上小于光学通道的位周期。 由于两个测量之间的光学延迟和/或自参考的选择，系统可以跟随信号发生的任何变化，例如附加滤波，自相位（交叉）相位调制，偏置和驱动信号变化 用于产生光信号的调制器。

公开(公告)号：US20100290495A1

公开(公告)日：2010-11-18

申请号：US12442337

申请日：2007-09-20

申请人： John F. Donegan ,  Wei-Hua Guo ,  Qiao-Yin Lu ,  Diarmuid Byrne ,  Brian Corbett ,  Paul Martin Lambkin ,  Brendan John Roycroft ,  Jan-Peter Engelstaedter ,  Frank Peters

发明人： John F. Donegan ,  Wei-Hua Guo ,  Qiao-Yin Lu ,  Diarmuid Byrne ,  Brian Corbett ,  Paul Martin Lambkin ,  Brendan John Roycroft ,  Jan-Peter Engelstaedter ,  Frank Peters

IPC分类号： H01S5/0625 ,  H01S5/026 ,  H01S5/10 ,  G02B6/26

CPC分类号： H01S5/1021 ,  H01S5/026 ,  H01S5/0265 ,  H01S5/06255 ,  H01S5/0654 ,  H01S5/1017 ,  H01S5/1039 ,  H01S5/1237 ,  H01S5/125

摘要： A laser device (1) comprises a ridge waveguide (2) comprising an upper cladding layer (5) and a lower cladding layer (6), between which is located an active layer (7). A ridge (8) formed in the upper cladding layer (5) defines the lateral width of a light guiding region (9) in the active layer (7). The ridge (8) is formed so that a portion (13) of the light guiding region (9) extends above the active layer (7) into the ridge (8). A plurality of lateral reflecting slots (15) extend laterally across the ridge (8) and extend into the ridge (8) to a depth sufficient to extend into the portion (13) of the light guiding region (9) which extends into the ridge (8) in order that the reflectivity of each lateral slot (15) is in the order of 2%. The combined reflectivity of the lateral slots (15) is such that the slots (15) intersect more than 20% of the total mode energy in the light guiding region (9), and this in combination with the gain of the active layer (7) is such as to facilitate lasing within the light guiding region (9) independently of the reflectivity of end facets (18,19) of the waveguide (2). Accordingly, the laser device (1) is particularly suitable for integrally forming with other optical components, for example, an optical modulator or an optical detector on a single semiconductor chip, whereby the laser device and the other optical components are formed in series on the same light guiding region (9).

摘要翻译： 激光装置（1）包括脊形波导（2），其包括上包层（5）和下包层（6），其间位于有源层（7）之间。 形成在上包层（5）中的脊（8）限定有源层（7）中的导光区域（9）的横向宽度。 脊（8）形成为使得导光区域（9）的部分（13）在有源层（7）上方延伸到脊（8）中。 多个横向反射槽（15）横向延伸穿过脊部（8）并且延伸到脊部（8）中至足以延伸到延伸到脊部的导光区域（9）的部分（13）的深度 （8），以便每个横向槽（15）的反射率大约为2％。 横向狭槽（15）的组合反射率使得狭槽（15）在导光区域（9）中相交超过总模式能量的20％，并且与活性层（7）的增益相结合 ）能够独立于波导（2）的端面（18,19）的反射率来促进光导区域（9）内的激光。 因此，激光装置（1）特别适合于与单个半导体芯片上的其他光学部件（例如光调制器或光检测器）一体地形成，由此激光装置和其它光学部件在 相同的光导区域（9）。

公开(公告)号：US08666245B2

公开(公告)日：2014-03-04

申请号：US13500796

申请日：2010-10-11

申请人： Wei-Hua Guo ,  Edward Flood ,  John F. Donegan

发明人： Wei-Hua Guo ,  Edward Flood ,  John F. Donegan

IPC分类号： H04B17/00

CPC分类号： H04B10/07953

摘要： The invention provides a system and method for measuring optical signal-to-noise-ratio (OSNR) in an optical communication system. A channel filter is adapted to select one specific optical communication channel from a wavelength-division-multiplexing (WDM) optical communication system, wherein the channel comprises an optical signal carrying digital bit information and noise from associated optical power amplifiers in the system. At least one optical delay interferometer is adapted to measure at least two interferograms of the noisy signal. The invention provides a mechanism for calculating the in-band OSNR from extinctions of the interferograms measured at different optical delays by referring to each other, wherein said optical delays are selected to be substantially less than a bit period of the optical channel. Because of the selection of the optical delays and/or the self-reference between the two measurements, the system can follow any changes happening to the signal such as additional filtering, self (cross)-phase modulation, the bias and drive signal change of the modulator used to generate the optical signal.

摘要翻译： 本发明提供了一种用于在光通信系统中测量光信噪比（OSNR）的系统和方法。 信道滤波器适于从波分复用（WDM）光通信系统中选择一个特定的光通信信道，其中信道包括承载数字比特信息的光信号和系统中相关联的光功率放大器的噪声。 至少一个光学延迟干涉仪适于测量噪声信号的至少两个干涉图。 本发明提供了一种用于通过参考彼此在不同光学延迟测量的干涉图的消逝来计算带内OSNR的机制，其中所述光学延迟被选择为基本上小于光学通道的位周期。 由于两个测量之间的光学延迟和/或自参考的选择，系统可以跟随信号发生的任何变化，例如附加滤波，自相位（交叉）相位调制，偏置和驱动信号变化 用于产生光信号的调制器。

公开(公告)号：US20100046562A1

公开(公告)日：2010-02-25

申请号：US12442244

申请日：2007-09-20

申请人： John F. Donegan ,  Richard Phelan ,  Wel-Hua Guo ,  Qiao-Yin Lu ,  Brian Corbett ,  Paul Martin Lambkin ,  Brendan John Roycroft

发明人： John F. Donegan ,  Richard Phelan ,  Wel-Hua Guo ,  Qiao-Yin Lu ,  Brian Corbett ,  Paul Martin Lambkin ,  Brendan John Roycroft

IPC分类号： H01S3/10

CPC分类号： H01S5/1021 ,  H01S5/026 ,  H01S5/0265 ,  H01S5/06255 ,  H01S5/0654 ,  H01S5/1017 ,  H01S5/1039 ,  H01S5/1237 ,  H01S5/125

摘要： A tunable laser device (1) comprises integrally formed first and second ridge waveguides (5, 6). A longitudinally extending ridge (12) defines first and second light guiding regions (19, 20) of the first and second waveguides (5, 6) which communicate with each other. A plurality of first slots (27) extending laterally in the ridge (12) adjacent the first waveguide (5), and a plurality of second slots (28) extending laterally in the ridge (12) adjacent the second waveguide (6) produce first and second mirror loss spectra of the respective first and second waveguides (5, 6) with minimum peak values at respective first and second wavelength values. The first slots are equi-spaced apart to produce the first mirror loss spectrum, and the second slots (28) are also equi-spaced apart, but the spacing between the second slots (28) is different to the spacing between the first slots (27) so that the minimum peak values of the second mirror loss spectrum occur at different wavelength values to the wavelength values at which the minimum peak values of the first mirror loss spectrum occur, with the exception of one minimum peak value of each of the first and second mirror loss spectra, which coincide at a common wavelength value. The tunable laser device (1) produces light of that common wavelength value. In order to vary the wavelength value at which the minimum peak value of each of the first and second mirror loss spectra occur, currents with which the first and second waveguides (5, 6) are pumped are independently varied for varying the wavelengths at which the minimum peak values of the respective first and second mirror loss spectra occur, thereby providing Vernier tuning of the tunable laser device for producing light of selectable wavelengths.

摘要翻译： 可调谐激光装置（1）包括一体形成的第一和第二脊状波导（5,6）。 纵向延伸的脊（12）限定彼此连通的第一和第二波导（5,6）的第一和第二导光区域（19,20）。 在邻近第一波导（5）的脊（12）中横向延伸的多个第一槽（27）以及邻近第二波导（6）在脊（12）中横向延伸的多个第二槽（28）产生第一 以及在相应的第一和第二波长值处具有最小峰值的相应的第一和第二波导（5,6）的第二镜损耗谱。 第一槽间隔开以产生第一反射镜损耗光谱，而第二槽（28）也是等间隔开的，但是第二槽（28）之间的间距与第一槽之间的间距不同 27），使得第二镜损耗光谱的最小峰值出现在与第一镜损耗光谱的最小峰值出现的波长值不同的波长值上，除了第一镜损耗光谱中的每一个的最小峰值 和第二镜损耗光谱，其在共同的波长值上重合。 可调激光器件（1）产生该共同波长值的光。 为了改变发生第一和第二镜损耗光谱中的每一个的最小峰值的波长值，泵浦第一和第二波导（5,6）的电流被独立地变化，以改变波长 发生相应的第一和第二反射镜损耗光谱的最小峰值，由此提供可调激光器件的游标调谐，用于产生可选波长的光。