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公开(公告)号：US07796656B2
公开(公告)日：2010-09-14
申请号：US11979510
申请日：2007-11-05
申请人： Chris Watson , Kirill Pimenov , Valery Tolstikhin , Greg Letal , Ron Moore
发明人： Chris Watson , Kirill Pimenov , Valery Tolstikhin , Greg Letal , Ron Moore
CPC分类号： H01S5/12 , H01S5/0655 , H01S5/1014 , H01S5/1221 , H01S5/1237 , H01S5/22
摘要： The invention describes the method and apparatus for enhanced efficiency in a laterally-coupled distributed feedback (LC-DFB) laser. In a device featuring the effective ridge design, lateral confinement of the guided optical modes is provided by a surface etched grating, which also serves as a DFB element of the laser. Coupling and quantum efficiency of such a LC-DFB laser both improve with an increase of the lateral mode order. In accordance with this invention, a dramatic enhancement of the laser efficiency is achievable by designing it to operate in one of the higher order modes, notably the first order mode, while all the other lateral modes, including the zero order mode, are suppressed through gain-loss discrimination. In the exemplary embodiment of the invention, this enhanced efficiency technique is applied to the design of a single-mode LC-DFB laser suitable for a monolithic integration with other active and passive functional elements of photonic integrated circuits fabricated by using one-step epitaxial growth.
摘要翻译： 本发明描述了用于增强侧向耦合分布反馈（LC-DFB）激光器的效率的方法和装置。 在具有有效脊设计的装置中，引导光学模式的横向限制由表面蚀刻光栅提供，其也用作激光的DFB元件。 这种LC-DFB激光器的耦合和量子效率随着横向模式顺序的增加而改善。 根据本发明，激光效率的显着提高可以通过将其设计成以较高阶模式（特别是一阶模式）中的一种工作来实现，而包括零级模式的所有其它横向模式通过 损益歧视。 在本发明的示例性实施例中，该增强效率技术被应用于单模LC-DFB激光器的设计，其适用于通过使用一步外延生长制造的光子集成电路的其它有源和无源功能元件的单片集成 。
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12.发明授权公开(公告)号：US07471378B2
公开(公告)日：2008-12-30
申请号：US11427985
申请日：2006-06-30
申请人： Eric Desfonds , Kirill Pimenov
发明人： Eric Desfonds , Kirill Pimenov
CPC分类号： G01J4/04 , G01M11/337 , H04Q2213/1301
摘要： The present invention relates to a method for determining a polarization dependent characteristic of an optical or opto-electronic device. Using the Mueller matrix data, a matrix M corresponding to a difference between a first and a second transmission spectrum is determined. The first and the second transmission spectrum correspond to a first Stokes vector and a second Stokes vector, respectively, with the second Stokes vector being opposite to the first Stokes vector. Eigenvalues of the matrix M are then determined and the first Stokes vector is determined by selecting the largest eigenvalue of the matrix M and determining a corresponding eigenvector. The second Stokes vector is then determined as a vector opposite to the first Stokes vector. Finally, the data indicative of the polarization dependent characteristic of the device are determined using the first and the second Stokes vector and the Mueller matrix data. This method is highly beneficial by providing highly accurate data related to polarization dependent parameters while simultaneously providing a nearly instantaneous result with minimum computational effort.
摘要翻译： 本发明涉及一种用于确定光学或光电子器件的偏振相关特性的方法。 使用Mueller矩阵数据，确定与第一和第二透射光谱之间的差对应的矩阵M. 第一和第二透射光谱分别对应于第一斯托克斯矢量和第二斯托克斯矢量，第二斯托克斯矢量与第一斯托克斯矢量相反。 然后确定矩阵M的特征值，并且通过选择矩阵M的最大特征值并确定对应的特征向量来确定第一斯托克斯向量。 然后将第二斯托克斯矢量确定为与第一斯托克斯矢量相反的向量。 最后，使用第一和第二斯托克斯矢量和米勒矩阵数据确定指示设备的偏振相关特性的数据。 该方法通过提供与偏振相关参数相关的高精度数据而非常有益，同时以最小的计算量提供几乎瞬时的结果。
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公开(公告)号：US20080069496A1
公开(公告)日：2008-03-20
申请号：US11898398
申请日：2007-09-12
申请人： Valery Tolstikhin , Kirill Pimenov
发明人： Valery Tolstikhin , Kirill Pimenov
IPC分类号： G02B6/34
CPC分类号： G02B6/124
摘要： The invention describes the method and apparatus for enhancement of coupling efficiency in effective-ridge laterally-coupled surface-etched grating waveguide structures, where a slab waveguide has a sequence of the periodic parallel segmented trenches etched from its top surface, such that the segments of intact material having higher refractive index than that in the surrounding segments of periodic trenches form the effective ridges which confine the optical field in and around these ridges, on one hand, and provide bidirectional coupling for the confined modes experiencing Bragg reflection from the segments of the periodic trenches, on the other. The invention discloses the designs of the multiple effective ridge laterally coupled surface-etched grating waveguide structures, which enhances the coupling efficiency as compared to a conventional single effective ridge grating design because of an intended dilution of the lateral confinement caused by the multiple effective ridges, resulting in an increase of the optical mode's overlap with the surface etched grating formed everywhere outside the effective ridges.
摘要翻译： 本发明描述了用于增强有效脊横向耦合表面蚀刻光栅波导结构中的耦合效率的方法和装置，其中平板波导具有从其顶表面蚀刻的周期性平行分段沟槽的序列，使得 具有比周期性沟槽的周围段中的折射率高的折射率的完整材料一方面形成将光场限制在这些脊内和周围的有效脊，一方面，为经受来自该段的段的布拉格反射提供双向耦合 周期性的沟渠，另一方面。 本发明公开了多个有效脊侧向耦合表面蚀刻光栅波导结构的设计，与传统的单一有效脊格栅设计相比，由于由多个有效脊引起的横向约束的预期稀释，增强了耦合效率， 导致光学模式与在有效脊之外形成的表面蚀刻光栅的重叠的增加。
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公开(公告)号：US07609919B2
公开(公告)日：2009-10-27
申请号：US11898398
申请日：2007-09-12
申请人： Valery Tolstikhin , Kirill Pimenov
发明人： Valery Tolstikhin , Kirill Pimenov
CPC分类号： G02B6/124
摘要： The invention describes the method and apparatus for enhancement of coupling efficiency in effective-ridge laterally-coupled surface-etched grating waveguide structures, where a slab waveguide has a sequence of the periodic parallel segmented trenches etched from its top surface, such that the segments of intact material having higher refractive index than that in the surrounding segments of periodic trenches form the effective ridges which confine the optical field in and around these ridges, on one hand, and provide bidirectional coupling for the confined modes experiencing Bragg reflection from the segments of the periodic trenches, on the other. The invention discloses the designs of the multiple effective ridge laterally coupled surface-etched grating waveguide structures, which enhances the coupling efficiency as compared to a conventional single effective ridge grating design because of an intended dilution of the lateral confinement caused by the multiple effective ridges, resulting in an increase of the optical mode's overlap with the surface etched grating formed everywhere outside the effective ridges.
摘要翻译： 本发明描述了用于增强有效脊横向耦合表面蚀刻光栅波导结构中的耦合效率的方法和装置，其中平板波导具有从其顶表面蚀刻的周期性平行分段沟槽的序列，使得 具有比周期性沟槽的周围段中的折射率高的折射率的完整材料一方面形成将光场限制在这些脊内和周围的有效脊，一方面，为经受来自该段的段的布拉格反射提供双向耦合 周期性的沟渠，另一方面。 本发明公开了多个有效脊侧向耦合表面蚀刻光栅波导结构的设计，与传统的单一有效脊格栅设计相比，由于由多个有效脊引起的侧向约束的预期稀释，增强了耦合效率， 导致光学模式与在有效脊之外形成的表面蚀刻光栅的重叠的增加。
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公开(公告)号：US20090116522A1
公开(公告)日：2009-05-07
申请号：US11979510
申请日：2007-11-05
申请人： Chris Watson , Kirill Pimenov , Valery Tolstikhin , Greg Letal , Ron Moore
发明人： Chris Watson , Kirill Pimenov , Valery Tolstikhin , Greg Letal , Ron Moore
CPC分类号： H01S5/12 , H01S5/0655 , H01S5/1014 , H01S5/1221 , H01S5/1237 , H01S5/22
摘要： The invention describes the method and apparatus for enhanced efficiency in a laterally-coupled distributed feedback (LC-DFB) laser. In a device featuring the effective ridge design, lateral confinement of the guided optical modes is provided by a surface etched grating, which also serves as a DFB element of the laser. Coupling and quantum efficiency of such a LC-DFB laser both improve with an increase of the lateral mode order. In accordance with this invention, a dramatic enhancement of the laser efficiency is achievable by designing it to operate in one of the higher order modes, notably the first order mode, while all the other lateral modes, including the zero order mode, are suppressed through gain-loss discrimination. In the exemplary embodiment of the invention, this enhanced efficiency technique is applied to the design of a single-mode LC-DFB laser suitable for a monolithic integration with other active and passive functional elements of photonic integrated circuits fabricated by using one-step epitaxial growth.
摘要翻译： 本发明描述了用于增强侧向耦合分布反馈（LC-DFB）激光器的效率的方法和装置。 在具有有效脊设计的装置中，引导光学模式的横向限制由表面蚀刻光栅提供，其也用作激光的DFB元件。 这种LC-DFB激光器的耦合和量子效率随着横向模式顺序的增加而改善。 根据本发明，激光效率的显着提高可以通过将其设计成以较高阶模式（特别是一阶模式）中的一种工作来实现，而包括零级模式的所有其它横向模式通过 损益歧视。 在本发明的示例性实施例中，该增强效率技术被应用于单模LC-DFB激光器的设计，其适用于通过使用一步外延生长制造的光子集成电路的其它有源和无源功能元件的单片集成 。
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