公开(公告)号：US5780843A

公开(公告)日：1998-07-14

申请号：US680870

申请日：1996-07-16

Applicant: Jean-Fran.cedilla.ois Cliche ,  Michel Tetu ,  Christine Latrasse

Inventor： Jean-Fran.cedilla.ois Cliche ,  Michel Tetu ,  Christine Latrasse

IPC: G01J3/10 ,  G01J3/28 ,  G01J9/00 ,  G01J3/51

CPC classification number: G01J3/10 ,  G01J9/00 ,  G01J2003/2866

Abstract: Calibration of a variable frequency light source is performed by a control unit which has a knowledge of the known transmission pattern of an optical filter, such as gas cell or a calibrated interferometer, having a number of known frequency dependent transmission characteristics in the tuning range of the optical source. This unit scans the frequency of the optical source via a frequency control signal over a frequency range and measures the optical intensity of the optical source output light after it has passed through the optical filter The measured transmission and frequency control signal values are processed and stored in memory and constitute a measured absorption pattern. Once acquired for a frequency range, this pattern is compared to the theoretical transmission pattern of the optical filter. Correspondences are made to identify the transmission features against their known counterparts. A relationship between the frequency control signal and actual frequency of the optical source is established. The frequency calibration of the optical source over many frequency points is achieved. The invention is especially suited to the frequency calibration of tunable laser sources, such as semiconductor lasers and external cavity lasers.

Abstract translation: 可变频率光源的校准由控制单元执行，该控制单元具有已知的诸如气体单元或校准干涉仪的滤光器的传输模式的知识，该滤波器在校准范围内具有已知的频率相关传输特性 光源。 该单元通过频率范围上的频率控制信号扫描光源的频率，并测量光源输出光通过滤光器后的光强度。测量的传输和频率控制信号值被处理并存储在 记忆并构成测量吸收模式。 一旦获取了频率范围，将该模式与光学滤波器的理论传输模式进行比较。 进行相应的对应来识别传输特征。 建立频率控制信号与光源的实际频率之间的关系。 实现了许多频点上光源的频率校准。 本发明特别适用于可调激光源的频率校准，例如半导体激光器和外腔激光器。

公开(公告)号：US08619824B2

公开(公告)日：2013-12-31

申请号：US13225155

申请日：2011-09-02

Applicant: Simon Ayotte ,  Michel Morin ,  Michel Poulin ,  Christine Latrasse ,  Yves Painchaud

Inventor： Simon Ayotte ,  Michel Morin ,  Michel Poulin ,  Christine Latrasse ,  Yves Painchaud

IPC: H01S3/10

CPC classification number: H01S5/0687 ,  H01S5/0078 ,  H01S5/0261 ,  H01S5/06256 ,  H01S5/0683 ,  H01S5/12 ,  H01S5/1215 ,  H01S5/4006

Abstract: A low white frequency noise tunable semiconductor laser source is presented. The laser source includes a single-mode semiconductor laser assembly which generates a laser beam having a tunable frequency over a spectral range of interest. An optical filter is provided in the path of the laser beam. The optical filter has multiple spectral features distributed over the entire spectral range of interest. Each spectral feature has a narrow spectral range. A locking mechanism is further provided and is controllable for locking a spectral alignment between the frequency of the laser beam and any selected one of the spectral features of the optical filter.

Abstract translation: 提出了一种低白噪声可调谐半导体激光源。 激光源包括单模半导体激光器组件，其在感兴趣的光谱范围上产生具有可调谐频率的激光束。 在激光束的路径中设置滤光器。 光学滤波器具有分布在感兴趣的整个光谱范围上的多个光谱特征。 每个光谱特征具有窄的光谱范围。 进一步提供锁定机构并且可控制该锁定机构，用于锁定激光束的频率与光学滤波器的光谱特征中的任何选定的一个之间的光谱对准。

公开(公告)号：US20180224605A1

公开(公告)日：2018-08-09

申请号：US15943165

申请日：2018-04-02

Applicant: Yves Painchaud ,  Marie-Josée Picard ,  Ian Betty ,  Christine Latrasse ,  Michel Poulin

Inventor： Yves Painchaud ,  Marie-Josée Picard ,  Ian Betty ,  Christine Latrasse ,  Michel Poulin

IPC: G02B6/14 ,  G02B6/124

CPC classification number: G02B6/14 ,  G02B6/00 ,  G02B6/1228 ,  G02B6/124 ,  G02B6/125 ,  G02B6/305 ,  G02B2006/12152

Abstract: A spot-size converter having a waveguiding structure. The first part of the waveguiding structure receives light from or transmits light to a first waveguide in a first propagation mode. The first part of the waveguiding structure has a longitudinally varying effective refractive index that decreases away from the first waveguide. The second part of the waveguiding structure transmits light to or receives light from a second waveguide in a second propagation mode. The second part of the waveguiding structure has a number of high-index elements arranged in a single plane, extending along a longitudinal waveguiding axis and at least partially overlapping the first part of the waveguiding structure. The first propagation mode of the first waveguide progressively transforms into the second propagation mode of the second waveguide along the longitudinal waveguiding axis through an overlap region between the first part and the second part of the waveguiding structure.

公开(公告)号：US20120063474A1

公开(公告)日：2012-03-15

申请号：US13225155

申请日：2011-09-02

Applicant: Simon Ayotte ,  Michel Morin ,  Michel Poulin ,  Christine Latrasse ,  Yves Painchaud

Inventor： Simon Ayotte ,  Michel Morin ,  Michel Poulin ,  Christine Latrasse ,  Yves Painchaud

IPC: H01S3/10

CPC classification number: H01S5/0687 ,  H01S5/0078 ,  H01S5/0261 ,  H01S5/06256 ,  H01S5/0683 ,  H01S5/12 ,  H01S5/1215 ,  H01S5/4006

Abstract: A low white frequency noise tunable semiconductor laser source is presented. The laser source includes a single-mode semiconductor laser assembly which generates a laser beam having a tunable frequency over a spectral range of interest. An optical filter is provided in the path of the laser beam. The optical filter has multiple spectral features distributed over the entire spectral range of interest. Each spectral feature has a narrow spectral range. A locking mechanism is further provided and is controllable for locking a spectral alignment between the frequency of the laser beam and any selected one of the spectral features of the optical filter.

Abstract translation: 提出了一种低白噪声可调谐半导体激光源。 激光源包括单模半导体激光器组件，其在感兴趣的光谱范围上产生具有可调谐频率的激光束。 在激光束的路径中设置滤光器。 光学滤波器具有分布在感兴趣的整个光谱范围上的多个光谱特征。 每个光谱特征具有窄的光谱范围。 进一步提供锁定机构并且可控制该锁定机构，用于锁定激光束的频率与光学滤波器的光谱特征中的任何选定的一个之间的光谱对准。

公开(公告)号：US09823419B1

公开(公告)日：2017-11-21

申请号：US15279684

申请日：2016-09-29

Applicant: Francois Pelletier ,  Michel Poulin ,  Marie-Josée Picard ,  Christine Latrasse

Inventor： Francois Pelletier ,  Michel Poulin ,  Marie-Josée Picard ,  Christine Latrasse

IPC: G02B6/122 ,  G02B6/136 ,  G02B6/30 ,  G02B6/12

CPC classification number: G02B6/30 ,  G02B6/122 ,  G02B6/136 ,  G02B2006/12176

Abstract: An optical system may include a substrate that includes an etched region and a laser-induced breakage region. The optical system may further include an optical waveguide disposed on the substrate. The optical system may further include an optical device coupled to the optical waveguide within the etched region. The laser-induced breakage region may produce a predetermined coupling gap between the optical waveguide and the optical device.

公开(公告)号：US06865007B2

公开(公告)日：2005-03-08

申请号：US10391483

申请日：2003-03-18

Applicant: Jean-François Cliche ,  Michel Têtu ,  Christine Latrasse ,  Alain Zarka

Inventor： Jean-François Cliche ,  Michel Têtu ,  Christine Latrasse ,  Alain Zarka

IPC: G01N21/03 ,  G01N21/27 ,  G02B5/20 ,  G02B5/28 ,  G02B6/34 ,  G02F1/07

CPC classification number: G02B5/284 ,  G01N21/03 ,  G01N21/0303 ,  G01N21/278 ,  G02B5/202 ,  G02B6/29358 ,  Y10T29/49002 ,  Y10T29/4911

Abstract: There is provided a complex frequency response filter providing a frequency response having a desired shape. A first complex frequency response filter includes a first and a second reflecting surfaces defining a resonant cavity therebetween. Each of the reflecting surfaces respectively has a predetermined surface finish providing a given reflectivity, therefore providing resonances with a predetermined shaped frequency response of a predetermined amplitude and of a predetermined periodicity. Those frequency responses can then be summed to generate an arbitrarily complex spectral response. In another embodiment, the complex frequency response filter includes a transmission medium and a first and a second reflecting surfaces defining a resonant cavity therebetween. The transmission medium has a predetermined transmission pattern distributed therein therefore providing resonances having a predetermined shaped frequency response of a predetermined amplitude and of a predetermined periodicity, which can be combined to generate arbitrary frequency responses. A method for manufacturing such devices is also disclosed.

Abstract translation: 提供了一种提供具有期望形状的频率响应的复频率响应滤波器。 第一复频率响应滤波器包括在它们之间限定谐振腔的第一和第二反射表面。 每个反射表面分别具有提供给定反射率的预定表面光洁度，因此提供具有预定振幅和预定周期性的预定形状频率响应的谐振。 然后可以将那些频率响应相加以产生任意复杂的光谱响应。 在另一个实施例中，复频率响应滤波器包括传输介质和在它们之间限定谐振腔的第一和第二反射表面。 传输介质具有分布在其中的预定传输模式，从而提供具有预定振幅和预定周期的预定形状频率响应的谐振，其可被组合以产生任意频率响应。 还公开了一种制造这种装置的方法。

公开(公告)号：US06717967B2

公开(公告)日：2004-04-06

申请号：US10293004

申请日：2002-11-13

Applicant: Jean-François Cliche ,  Michel Têtu ,  Christine Latrasse ,  Alain Zarka

Inventor： Jean-François Cliche ,  Michel Têtu ,  Christine Latrasse ,  Alain Zarka

IPC: H01S313

CPC classification number: H04B10/504 ,  G01J3/26 ,  G01J2003/2866 ,  G02B6/4202 ,  G02B2006/1215 ,  H04B10/572

Abstract: A method and a system for filtering a user light beam using a periodic filter having a frequency response stabilized at an absolutely calibrated value are provided. A primary light beam is generated by a tunable laser source and portions thereof are filtered by an absolute reference filter and the periodic filter. First the frequency of the laser source is automatically locked on the absolute reference filter, and then the frequency response of the periodic filter is locked relative to the frequency of the laser source. The frequency response of the periodic filter is therefore continuously maintained at the proper calibration. User input and output are provided to pass the user light beam through the stabilized periodic filter independently of the filter stabilization process. A broadband absolutely calibrated optical source and a method for absolutely calibrating an optical spectrum analysis device are also provided.

Abstract translation: 提供了一种使用具有稳定在绝对校准值的频率响应的周期滤波器对用户光束进行滤波的方法和系统。 初级光束由可调谐激光源产生，其一部分由绝对参考滤波器和周期滤波器滤波。 首先，激光源的频率自动锁定在绝对参考滤波器上，然后周期滤波器的频率响应相对于激光源的频率被锁定。 因此，周期滤波器的频率响应被连续地保持在适当的校准。 提供用户输入和输出，以独立于滤波器稳定过程，将用户光束通过稳定的周期滤波器。 还提供了宽带绝对校准的光源和用于绝对校准光谱分析装置的方法。