公开(公告)号：US07145716B2

公开(公告)日：2006-12-05

申请号：US10538846

申请日：2002-12-19

申请人： Marco De Donno ,  Alain Repingon

发明人： Marco De Donno ,  Alain Repingon

IPC分类号： H01S3/00

CPC分类号： H01S3/06758 ,  H01S3/005 ,  H01S3/0064 ,  H01S3/06766 ,  H01S3/0677 ,  H01S3/094096 ,  H01S3/09415 ,  H01S3/1301 ,  H01S3/1305 ,  H01S3/302 ,  H01S2301/04 ,  H04B10/2916 ,  H04B2210/003

摘要： A multiple stage Raman amplifier includes an interstage wavelength-selective pump combiner. Wavelength-selection characteristics are such that the pump combiner substantially blocks the passage of the pump signal of the first stage to the second stage and/or vice versa while allowing the passage of the transmission signal from the first stage to the second stage. The pump combiner substantially blocks different portions of the wavelength spectrum of the pump radiation which is fed into the pump combiner from different ports. The pump combiner preferably includes thin-film filters. The pump combiner has the multiple function of coupling the pump signal of the first (or second) pump source and of isolating from one another the pump signals of the two amplification stages. This allows the reduction of the number of passive components present in a multistage optical amplifier, which in turn leads to a decrease of the overall insertion loss in the amplifier and to shorter assembly processing.

摘要翻译： 多级拉曼放大器包括级间波长选择泵组合器。 波长选择特性使得泵组合器基本上阻止第一级的泵浦信号到第二级的传递，和/或反之亦然，同时允许传输信号从第一级通过到第二级。 泵组合器基本上阻挡从不同端口进入泵组合器的泵浦辐射的波长谱的不同部分。 泵组合器优选地包括薄膜过滤器。 泵组合器具有耦合第一（或第二）泵浦源的泵浦信号并且彼此隔离两个放大级的泵浦信号的多重功能。 这允许减少存在于多级光放大器中的无源部件的数量，这又导致放大器中的整体插入损耗的降低以及更短的组装处理。

公开(公告)号：US20060158717A1

公开(公告)日：2006-07-20

申请号：US10538846

申请日：2002-12-19

申请人： Marco De Donno ,  Alain Repingon

发明人： Marco De Donno ,  Alain Repingon

IPC分类号： H01S3/00

CPC分类号： H01S3/06758 ,  H01S3/005 ,  H01S3/0064 ,  H01S3/06766 ,  H01S3/0677 ,  H01S3/094096 ,  H01S3/09415 ,  H01S3/1301 ,  H01S3/1305 ,  H01S3/302 ,  H01S2301/04 ,  H04B10/2916 ,  H04B2210/003

摘要： A multiple stage Raman amplifier includes an interstage wavelength-selective pump combiner. Wavelength-selection characteristics are such that the pump combiner substantially blocks the passage of the pump signal of the first stage to the second stage and/or vice versa while allowing the passage of the transmission signal from the first stage to the second stage. The pump combiner substantially blocks different portions of the wavelength spectrum of the pump radiation which is fed into the pump combiner from different ports. The pump combiner preferably includes thin-film filters. The pump combiner has the multiple function of coupling the pump signal of the first (or second) pump source and of isolating from one another the pump signals of the two amplification stages. This allows the reduction of the number of passive components present in a multistage optical amplifier, which in turn leads to a decrease of the overall insertion loss in the amplifier and to shorter assembly processing.

摘要翻译： 多级拉曼放大器包括级间波长选择泵组合器。 波长选择特性使得泵组合器基本上阻止第一级的泵浦信号到第二级的传递，和/或反之亦然，同时允许传输信号从第一级通过到第二级。 泵组合器基本上阻挡从不同端口进入泵组合器的泵浦辐射的波长谱的不同部分。 泵组合器优选地包括薄膜过滤器。 泵组合器具有耦合第一（或第二）泵浦源的泵浦信号并且彼此隔离两个放大级的泵浦信号的多重功能。 这允许减少存在于多级光放大器中的无源部件的数量，这又导致放大器中的整体插入损耗的降低以及更短的组装处理。

公开(公告)号：US08520709B2

公开(公告)日：2013-08-27

申请号：US12936723

申请日：2008-04-11

申请人： Paolo Baroni ,  Marco De Donno ,  Anna Ronchi

发明人： Paolo Baroni ,  Marco De Donno ,  Anna Ronchi

IPC分类号： H01S3/136

CPC分类号： H01S3/10038 ,  H01S3/1055 ,  H01S5/02216 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/02415 ,  H01S5/02476 ,  H01S5/02492 ,  H01S5/062 ,  H01S5/06213 ,  H01S5/06246 ,  H01S5/06251 ,  H01S5/0653 ,  H01S5/0683 ,  H01S5/10 ,  H01S5/101 ,  H01S5/141

摘要： A laser apparatus includes an external cavity laser (ECL) where the optical signal is modulated by an electrical modulation signal for modulating in frequency the laser output signal. The modulation in frequency produces a modulation of intensity (power) of the laser output signal, also denoted amplitude modulation (AM). A method of controlling the AM amplitude of a signal emitted by an ECL includes a gain medium, a phase element with variable transmissivity induced by the modulation, and a spectrally selective optical filter that selects and keeps the AM amplitude below a certain desired value or minimizes such value. A control method and a laser apparatus are also described in which the reduction of the AM component of the output power is achieved by acting on the gain of the gain medium of the ECL.

公开(公告)号：US07505490B2

公开(公告)日：2009-03-17

申请号：US10573892

申请日：2003-09-30

申请人： Andrea Romano ,  Marco De Donno ,  Aurelio Pianciola

发明人： Andrea Romano ,  Marco De Donno ,  Aurelio Pianciola

IPC分类号： H01S3/10

CPC分类号： H01S5/141 ,  G02F2203/055 ,  H01S3/105 ,  H01S3/1065 ,  H01S3/1398 ,  H01S5/02216 ,  H01S5/02284 ,  H01S5/0617 ,  H01S5/0622 ,  H01S5/0683 ,  H01S5/101

摘要： A single-mode external-cavity tuneable laser includes a gain medium, a tuneable element and a channel allocation grid element. The channel allocation grid element is preferably an FP etalon which is structured and configured to define a plurality of equally spaced transmission peaks corresponding to the ITU channel grid, e.g., 200, 100, 50 or 25 GHz. The tuneable element, preferably a tuneable mirror, serves as the coarse tuning element that discriminates between the peaks of the grid etalon. The tuneable laser of the invention has a relatively short cavity length of not more than 15 mm, preferably not larger than 12 mm. It has been found that the FP etalon introduces a phase non-linearity in the external cavity, which induces a compression of the cavity modes, i.e., a reduction in the cavity mode spacing, in correspondence to the etalon transmission peaks. Mode compression increases with the decrease of the FWHM bandwidth of the grid FP etalon, hereafter referred to as (FWHM)FP. (FWHM)FP should be about 2 GHz to about 8 GHz. Preferably, (FWHM)FP is approximately 3 to 6 GHz.

摘要翻译： 单模外部可调谐激光器包括增益介质，可调谐元件和信道分配网格元件。 信道分配网格单元优选地是FP标准具，其被构造和配置为定义对应于ITU信道网格的多个相等间隔的传输峰值，例如200,100,50或25GHz。 可调谐元件，优选可调谐镜，用作鉴别网格标准具的峰值的粗调谐元件。 本发明的可调激光器具有不大于15mm，优选不大于12mm的较短的腔体长度。 已经发现，FP标准具在外部空腔中引入了相位非线性，其引起空腔模式的压缩，即腔模模式间隔的减小，这对应于标准具的传输峰值。 模式压缩随着网格FP标准具的FWHM带宽的减小而增加，下文称为（FWHM）FP。 （FWHM）FP应为约2 GHz至约8 GHz。 （FWHM）FP优选为约3〜6GHz。

公开(公告)号：US08259765B2

公开(公告)日：2012-09-04

申请号：US12084318

申请日：2005-12-06

申请人： Giacomo Antonio Rossi ,  Marco De Donno ,  Paolo Zago

发明人： Giacomo Antonio Rossi ,  Marco De Donno ,  Paolo Zago

IPC分类号： H01S3/04

CPC分类号： H01S5/141 ,  H01L2224/40245 ,  H01L2924/00014 ,  H01S3/105 ,  H01S3/1062 ,  H01S5/02216 ,  H01S5/02236 ,  H01S5/02248 ,  H01S5/02276 ,  H01S5/02284 ,  H01S5/02415 ,  H01S5/02438 ,  H01L2224/37099

摘要： An external-cavity laser module includes a package defining an enclosure, the package including a base having a surface internal to the enclosure, a thermoelectric cooler within the enclosure, the thermoelectric cooler including an upper carrier plate and a lower carrier plate, the lower carrier plate being placed on the internal surface of the base and the thermoelectric cooler (TEC) being configured to stabilize the temperature of the upper carrier plate at a substantially constant temperature. The laser module further includes a laser assembly housed within the enclosure, including a gain medium for emitting an optical beam into the external cavity and an end mirror. Variations of the environmental temperature with respect to the thermally stabilized temperature cause mechanical deformations of the TEC upper carrier plate that is in thermal coupling with the laser assembly. The mechanical deformations in turn induce variations in the optical path length of the laser cavity. Thermal bridge of the gain medium to the environmental temperature is achieved by the use of a thermal bridge element for conducting heat either from or to the gain medium.

摘要翻译： 外腔激光器模块包括限定外壳的封装，该封装包括具有外壳内部表面的底座，外壳内的热电冷却器，该热电冷却器包括上承载板和下承载板，下载架 板被放置在基座的内表面上，并且热电冷却器（TEC）被配置为使上载体板的温度在基本上恒定的温度下稳定。 激光模块还包括容纳在外壳内的激光组件，包括用于将光束发射到外腔中的增益介质和端镜。 环境温度相对于热稳定温度的变化导致与激光组件热耦合的TEC上承载板的机械变形。 机械变形又导致激光腔的光程长度的变化。 增益介质对环境温度的热桥是通过使用用于从增益介质传导或传递到增益介质的热桥元件实现的。

公开(公告)号：US20100177793A1

公开(公告)日：2010-07-15

申请号：US12084318

申请日：2006-12-06

申请人： Giacomo Antonio Rossi ,  Marco De Donno ,  Paolo Zago

发明人： Giacomo Antonio Rossi ,  Marco De Donno ,  Paolo Zago

IPC分类号： H01S3/10 ,  H01S5/14 ,  H01S5/024

CPC分类号： H01S5/141 ,  H01L2224/40245 ,  H01L2924/00014 ,  H01S3/105 ,  H01S3/1062 ,  H01S5/02216 ,  H01S5/02236 ,  H01S5/02248 ,  H01S5/02276 ,  H01S5/02284 ,  H01S5/02415 ,  H01S5/02438 ,  H01L2224/37099

摘要： An external-cavity laser module includes a package defining an enclosure, the package including a base having a surface internal to the enclosure, a thermoelectric cooler within the enclosure, the thermoelectric cooler including an upper carrier plate and a lower carrier plate, the lower carrier plate being placed on the internal surface of the base and the thermoelectric cooler (TEC) being configured to stabilise the temperature of the upper carrier plate at a substantially constant temperature. The laser module further includes a laser assembly housed within the enclosure, including a gain medium for emitting an optical beam into the external cavity and an end mirror. Variations of the environmental temperature with respect to the thermally stabilised temperature cause mechanical deformations of the TEC upper carrier plate that is in thermal coupling with the laser assembly. The mechanical deformations in turn induce variations in the optical path length of the laser cavity. Thermal bridge of the gain medium to the environmental temperature is achieved by the use of a thermal bridge element for conducting heat either from or to the gain medium.

摘要翻译： 外腔激光器模块包括限定外壳的封装，所述封装包括具有外壳内部表面的基座，所述外壳内的热电冷却器，所述热电冷却器包括上承载板和下承载板，所述下载体 板被放置在基座的内表面上，并且热电冷却器（TEC）被配置为使上载体板的温度在基本上恒定的温度下稳定。 激光模块还包括容纳在外壳内的激光组件，包括用于将光束发射到外腔中的增益介质和端镜。 环境温度相对于热稳定温度的变化导致与激光组件热耦合的TEC上承载板的机械变形。 机械变形又导致激光腔的光程长度的变化。 增益介质对环境温度的热桥是通过使用用于从增益介质传导或传递到增益介质的热桥元件实现的。

公开(公告)号：US20070211772A1

公开(公告)日：2007-09-13

申请号：US10573892

申请日：2003-09-30

申请人： Andrea Romano ,  Marco De Donno ,  Aurelio Pianciola

发明人： Andrea Romano ,  Marco De Donno ,  Aurelio Pianciola

IPC分类号： H01S3/10

CPC分类号： H01S5/141 ,  G02F2203/055 ,  H01S3/105 ,  H01S3/1065 ,  H01S3/1398 ,  H01S5/02216 ,  H01S5/02284 ,  H01S5/0617 ,  H01S5/0622 ,  H01S5/0683 ,  H01S5/101

摘要： A single-mode external-cavity tuneable laser includes a gain medium, a tuneable element and a channel allocation grid element. The channel allocation grid element is preferably an FP etalon which is structured and configured to define a plurality of equally spaced transmission peaks corresponding to the ITU channel grid, e.g., 200, 100, 50 or 25 GHz. The tuneable element, preferably a tuneable mirror, serves as the coarse tuning element that discriminates between the peaks of the grid etalon. The tuneable laser of the invention has a relatively short cavity length of not more than 15 mm, preferably not larger than 12 mm. It has been found that the FP etalon introduces a phase non-linearity in the external cavity, which induces a compression of the cavity modes, i.e., a reduction in the cavity mode spacing, in correspondence to the etalon transmission peaks. Mode compression increases with the decrease of the FWHM bandwidth of the grid FP etalon, hereafter referred to as (FWHM)FP. (FWHM)FP should be about 2 GHz to about 8 GHz. Preferably, (FWHM)FP is approximately 3 to 6 GHz.

摘要翻译： 单模外部可调谐激光器包括增益介质，可调谐元件和信道分配网格元件。 信道分配网格单元优选地是FP标准具，其被构造和配置为定义对应于ITU信道网格的多个相等间隔的传输峰值，例如200,100,50或25GHz。 可调谐元件，优选可调谐镜，用作鉴别网格标准具的峰值的粗调谐元件。 本发明的可调激光器具有不大于15mm，优选不大于12mm的较短的腔体长度。 已经发现，FP标准具在外部空腔中引入了相位非线性，其引起空腔模式的压缩，即腔模模式间隔的减小，这对应于标准具的传输峰值。 模式压缩随着网格FP标准具的FWHM带宽的减小而增加，以下称为（FWHM）fp。 （FWHM）fp应为约2 GHz至约8 GHz。 （FWHM）fp优选为约3〜6GHz。

公开(公告)号：US07095554B2

公开(公告)日：2006-08-22

申请号：US10643493

申请日：2003-08-19

申请人： Aurelio Pianciola ,  Marco De Donno ,  Paolo Milanese

发明人： Aurelio Pianciola ,  Marco De Donno ,  Paolo Milanese

IPC分类号： H01S3/91

CPC分类号： H01S3/094003 ,  H01S3/0637 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094096

摘要： Optical pumping unit comprising a first pump source adapted to emit a first pump radiation at wavelength λp1; a second pump source adapted to emit a second pump radiation at wavelength λp2, with wavelength λp2 different from wavelength λp1; and a common coupling section comprising a first and a second port connected to the first and second pump source for respectively receiving the first and the second pump radiation; a third port for a signal radiation at wavelength λs; a fourth port, wherein the coupling section is adapted to combine, in the fourth port, the signal radiation and the first and second pump radiation through a reversal of the direction of propagation of the first pump radiation from the first port to the fourth port.

摘要翻译： 光泵单元包括适于在波长lambdap 1处发射第一泵浦辐射的第一泵浦源; 第二泵浦源，其适于在波长兰波特2处发射具有不同于波长兰波特1的波长兰波特2的第二泵浦辐射; 以及公共耦合部分，包括连接到第一和第二泵浦源的第一和第二端口，用于分别接收第一和第二泵浦辐射; 在波兰兰德斯的信号辐射的第三个端口; 第四端口，其中所述耦合部分适于在所述第四端口中通过所述第一泵浦辐射从所述第一端口到所述第四端口的传播方向的反转来组合所述信号辐射和所述第一和第二泵浦辐射。

公开(公告)号：US20110110388A1

公开(公告)日：2011-05-12

申请号：US12936723

申请日：2008-04-11

申请人： Paolo Baroni ,  Marco De Donno ,  Anna Ronchi

发明人： Paolo Baroni ,  Marco De Donno ,  Anna Ronchi

IPC分类号： H01S3/10

CPC分类号： H01S3/10038 ,  H01S3/1055 ,  H01S5/02216 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/02415 ,  H01S5/02476 ,  H01S5/02492 ,  H01S5/062 ,  H01S5/06213 ,  H01S5/06246 ,  H01S5/06251 ,  H01S5/0653 ,  H01S5/0683 ,  H01S5/10 ,  H01S5/101 ,  H01S5/141

摘要： The present invention concerns a laser apparatus (200) comprising an external cavity laser (ECL) in which the optical signal is modulated by an electrical modulation signal with the purpose of modulating in frequency the laser output signal. The modulation in frequency produces in turn a modulation of intensity (power) of the laser output signal, also denoted amplitude modulation (AM). A method is described of control of the AM amplitude of a signal emitted by an ECL that comprises a gain medium (205), a phase element (206) with variable transmissivity induced by the modulation and a spectrally selective optical filter (209) and that selects and keeps the AM amplitude below a certain desired value or minimizes such value. A control method and a laser apparatus (200) are also described in which the reduction of the AM component of the output power is achieved by acting on the gain of the gain medium of the ECL in such way that the variation of transmissivity caused by the modulation applied to a phase element (206) is at least partially compensated by a corresponding variation of the gain current of the gain medium so as to reduce or to minimize the variation of the loop gain of the laser cavity induced by the modulation.

摘要翻译： 本发明涉及一种包括外腔激光器（ECL）的激光装置（200），其中光信号由电调制信号调制，目的是在频率上调制激光输出信号。 频率调制又产生激光输出信号的强度（功率）的调制，也称为振幅调制（AM）。 描述了一种控制由ECL发射的信号的AM幅度的控制，其包括增益介质（205），由调制引起的具有可变透射率的相位元件（206）和光谱选择性滤光器（209），并且 选择并保持AM振幅低于一定的期望值或使这个值最小化。 还描述了一种控制方法和激光装置（200），其中通过以ECL的增益介质的增益作用于输出功率的AM分量的减小，使得由 至少部分地通过增益介质的增益电流的相应变化补偿施加到相位元件（206）的调制，以便减少或最小化由调制引起的激光腔的环路增益的变化。

公开(公告)号：US20050286118A1

公开(公告)日：2005-12-29

申请号：US10643493

申请日：2003-08-19

申请人： Aurelio Pianciola ,  Marco De Donno ,  Paolo Milanese

发明人： Aurelio Pianciola ,  Marco De Donno ,  Paolo Milanese

IPC分类号： H01S3/067 ,  H01S3/094 ,  H01S3/00

CPC分类号： H01S3/094003 ,  H01S3/0637 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094096

摘要： Optical pumping unit comprising a first pump source adapted to emit a first pump radiation at wavelength λp1; a second pump source adapted to emit a second pump radiation at wavelength λp2, with wavelength λp2 different from wavelength λp1; and a common coupling section comprising a first and a second port connected to the first and second pump source for respectively receiving the first and the second pump radiation; a third port for a signal radiation at wavelength λs; a fourth port, wherein the coupling section is adapted to combine, in the fourth port, the signal radiation and the first and second pump radiation through a reversal of the direction of propagation of the first pump radiation from the first port to the fourth port.

摘要翻译： 光泵单元包括适于在波长lambdap 1处发射第一泵浦辐射的第一泵浦源; 第二泵浦源，其适于在波长兰波特2处发射具有不同于波长兰波特1的波长兰波特2的第二泵浦辐射; 以及公共耦合部分，包括连接到第一和第二泵浦源的第一和第二端口，用于分别接收第一和第二泵浦辐射; 在波兰兰德斯的信号辐射的第三个端口; 第四端口，其中所述耦合部分适于在所述第四端口中通过所述第一泵浦辐射从所述第一端口到所述第四端口的传播方向的反转来组合所述信号辐射和所述第一和第二泵浦辐射。