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1. 发明授权

US06215809B1 Stabilization of laser sources with closely-coupled optical reflectors using an internal dither circuit 有权
标题翻译：使用内部抖动电路使紧密耦合的光反射器稳定激光源
公开(公告)号：US06215809B1
公开(公告)日：2001-04-10
申请号：US09197062
申请日：1998-11-20
申请人： Mehrdad Ziari , Robert G. Waarts , Robert J. Lang , John DeAndrea , Michael L. Bortz , Brian F. Ventrudo
发明人： Mehrdad Ziari , Robert G. Waarts , Robert J. Lang , John DeAndrea , Michael L. Bortz , Brian F. Ventrudo
IPC分类号： H01S308
CPC分类号： H01S3/094003 , H01S5/0652 , H01S5/146
摘要： Apparatus for providing a laser source optically coupled to an optical waveguide, such as an optical fiber, having a reflective grating positioned from the output facet of the laser source a distance equal to or greater than the coherence length of the laser source providing a portion of reflective feedback into the laser source optical cavity to maintain wavelength operation of the laser source in spite of changes in the laser operating temperature or drive current based upon coherence collapse in the laser operation. In cases where the fiber grating is positioned in the fiber within the coherence length of the laser source, intermittent coherence collapse, as opposed to continuous coherence collapse, is unavoidable. In cases where such a laser source is a pumping source for a solid state gain medium, such as an optical amplifier or laser having an active gain element, e.g., an Er doped amplifier, undesirable perturbations in the laser source output are present which have a deleterious effect on the operation of the solid state gain medium. The effect of these undesirable perturbations are substantially removed by a small, continuous variation or dither in the driving current of the laser source having a rate of variation that exceeds the active gain element excited state lifetime thereby controlling the switching of the laser source operation between states of coherency and coherence collapse. As a result, the effects of laser source perturbations are avoided so as not to have an effect on the operation of the coupled solid state gain medium so that its gain stability is improved. Various embodiments of dither circuits are disclosed. In addition, polarization-maintaining behavior is induced in optical waveguides to further improve laser source stability.
摘要翻译：用于提供光学耦合到诸如光纤的光波导的激光源的设备，其具有从激光源的输出小面定位的反射光栅，距离等于或大于激光源的相干长度，该距离提供一部分反射反射到激光源光学腔中以保持激光源的波长操作，尽管激光器工作温度或驱动电流基于激光器操作中的相干性崩溃而发生变化。在光纤光栅位于激光源的相干长度内的纤维光纤的情况下，与连续相干塌陷相反，间歇性相干塌陷是不可避免的。在这种激光源是用于固态增益介质的泵浦源的情况下，例如具有有源增益元件（例如，Er掺杂放大器）的光放大器或激光器，存在激光源输出中的不期望的扰动，其具有对固态增益介质的操作有害的影响。这些不期望的扰动的效果通过在激光源的驱动电流中的小的连续变化或抖动基本上消除，其具有超过有源增益元件激发态寿命的变化率，从而控制状态之间的激光源操作的切换的一致性和一致性崩溃。结果，避免了激光源扰动的影响，从而不会对耦合的固态增益介质的操作产生影响，从而提高了其增益稳定性。公开了抖动电路的各种实施例。此外，在光波导中引起偏振保持行为以进一步提高激光源的稳定性。

2. 发明授权

US5715263A Fibre-grating-stabilized diode laser 失效
标题翻译：光纤光栅稳定二极管激光器
公开(公告)号：US5715263A
公开(公告)日：1998-02-03
申请号：US575705
申请日：1995-12-19
申请人： Brian F. Ventrudo , Grant Rogers
发明人： Brian F. Ventrudo , Grant Rogers
IPC分类号： H01S3/067 , H01S3/082 , H01S3/091 , H01S5/026 , H01S5/065 , H01S5/0683 , H01S5/14 , H01S5/40 , H01S3/10
CPC分类号： H01S5/146 , G02B6/02076 , H01S5/4025 , G02B6/02057 , H01S2301/02 , H01S3/0826 , H01S5/065 , H01S5/0656 , H01S5/0657 , H01S5/141 , H01S5/4062
摘要： A fibre Bragg grating is used to stabilize the intensity and frequency fluctuations of a diode laser. The diode laser is connected with an opto-mechanical apparatus to the fibre which contains the grating. The grating is formed in the guided-mode region of the optical fibre. The wavelength of maximum grating reflectivity is selected to lie near the maximum of the diode laser gain bandwidth. The magnitude and bandwidth of the grating reflectivity stabilizes the diode laser output without appreciably reducing the optical output power from the end of the fibre. The bandwidth of the optical spectrum of the diode laser is selected depending on the distance of the grating from the diode laser.
摘要翻译：光纤布拉格光栅用于稳定二极管激光器的强度和频率波动。二极管激光器与光机械设备连接到包含光栅的光纤。光栅形成在光纤的导模区域中。选择最大光栅反射率的波长接近二极管激光器增益带宽的最大值。光栅反射率的幅度和带宽稳定了二极管激光输出，而不会明显地降低光纤末端的光输出功率。二极管激光器的光谱的带宽根据光栅与二极管激光器的距离来选择。

3. 发明授权

US06661819B1 Fiber grating stabilized diode laser 失效
标题翻译：光纤光栅稳定二极管激光器
公开(公告)号：US06661819B1
公开(公告)日：2003-12-09
申请号：US09839465
申请日：2001-04-20
申请人： Brian F. Ventrudo , Grant Rogers
发明人： Brian F. Ventrudo , Grant Rogers
IPC分类号： H01S330
CPC分类号： H01S5/146 , G02B6/02057 , G02B6/02076 , H01S3/0826 , H01S5/065 , H01S5/0656 , H01S5/0657 , H01S5/141 , H01S5/4025 , H01S5/4062 , H01S2301/02
摘要： A fiber Bragg grating is used to stabilize the intensity and frequency fluctuations of a diode laser. The diode laser is connected with an opto-mechanical apparatus to the fiber which contains the grating. The grating is formed in the guided-mode region of the optical fiber. The wavelength of maximum grating reflectivity is selected to lie near the maximum of the diode laser gain bandwidth. The magnitude and bandwidth of the grating reflectivity stabilizes the diode laser output without appreciably reducing the optical output power from the end of the fiber. The bandwidth of the optical spectrum of the diode laser is selected depending on the distance of the grating from the diode laser.
摘要翻译：光纤布拉格光栅用于稳定二极管激光器的强度和频率波动。二极管激光器与光机械设备连接到包含光栅的光纤。光栅形成在光纤的导模区域中。选择最大光栅反射率的波长接近二极管激光器增益带宽的最大值。光栅反射率的幅度和带宽稳定了二极管激光输出，而不会明显地降低光纤末端的光输出功率。二极管激光器的光谱的带宽根据光栅与二极管激光器的距离来选择。

4. 发明授权

US5659559A Apparatus for generating a stabilized laser source 失效
标题翻译：用于产生稳定的激光源的装置
公开(公告)号：US5659559A
公开(公告)日：1997-08-19
申请号：US408002
申请日：1995-03-21
申请人： Brian F. Ventrudo , Grant Rogers
发明人： Brian F. Ventrudo , Grant Rogers
IPC分类号： G02B6/42 , G02B6/02 , H01S3/07 , H01S3/082 , H01S5/00 , H01S5/065 , H01S5/14 , H01S5/40 , H01S3/10
CPC分类号： G02B6/02076 , H01S5/146 , G02B6/02057 , H01S2301/02 , H01S3/0826 , H01S5/065 , H01S5/0656 , H01S5/0657 , H01S5/141 , H01S5/4025
摘要： A fibre Bragg grating is used to stabilize the intensity and frequency fluctuations of a diode laser. The diode laser is connected with an opto-mechanical apparatus to the fibre which contains the grating. A polarization maintaining fibre is used. The grating is formed in the guided-mode region of the optical fibre using photorefractive techniques. The wavelength of maximum grating reflectivity is selected to lie near the maximum of the diode laser gain bandwidth. The magnitude and bandwidth of the grating reflectivity is sufficient to stabilize the diode laser output without appreciably reducing the optical output power from the end of the fibre. The bandwidth of the optical spectrum of the diode laser is increased or decreased relative to the solitary diode laser operating characteristics depending on the distance of the grating from the diode laser.
摘要翻译：光纤布拉格光栅用于稳定二极管激光器的强度和频率波动。二极管激光器与光机械设备连接到包含光栅的光纤。使用偏振保持光纤。使用光折射技术在光纤的导模区域中形成光栅。选择最大光栅反射率的波长接近二极管激光器增益带宽的最大值。光栅反射率的幅度和带宽足以稳定二极管激光器输出，而不会明显地降低光纤端部的光输出功率。根据光栅与二极管激光器的距离，二极管激光器的光谱带宽相对于孤立二极管激光器工作特性而增加或减小。

5. 发明授权

US5589684A Multiple diode lasers stabilized with a fiber grating 失效
标题翻译：多个二极管激光器用光纤光栅稳定
公开(公告)号：US5589684A
公开(公告)日：1996-12-31
申请号：US415129
申请日：1995-03-30
申请人： Brian F. Ventrudo , Peter G. Berrang
发明人： Brian F. Ventrudo , Peter G. Berrang
IPC分类号： H01S3/082 , H01S5/065 , H01S5/14 , H01S5/40 , G02F1/01
CPC分类号： H01S5/146 , G02B6/02076 , H01S5/4025 , G02B6/02057 , H01S2301/02 , H01S3/0826 , H01S5/065 , H01S5/0656 , H01S5/0657 , H01S5/141 , H01S5/4062
摘要： A fibre Bragg grating is used to stabilize the intensity and frequency fluctuations of two diode lasers simultaneously. The polarized optical output from the diode lasers is collimated and directed through a beam combiner device which combines the separate beams into a single beam, thus summing the optical power. The combined beam is directed into an optical fibre containing a fibre Bragg grating which reflects a fraction of the light back into each diode laser to cause low-coherence, stable operation of each laser.
摘要翻译：纤维布拉格光栅用于同时稳定两个二极管激光器的强度和频率波动。来自二极管激光器的偏振光学输出被准直并引导通过将单独光束组合成单个光束的光束组合器装置，从而对光功率求和。组合的光束被引导到包含光纤布拉格光栅的光纤中，光纤布拉格光栅将光的一部分反射回每个二极管激光器以引起每个激光器的低相干性，稳定的操作。

6. 发明授权

US5485481A Fibre-grating-stabilized diode laser 失效
标题翻译：光纤光栅稳定二极管激光器
公开(公告)号：US5485481A
公开(公告)日：1996-01-16
申请号：US267785
申请日：1994-06-28
申请人： Brian F. Ventrudo , Grant Rogers
发明人： Brian F. Ventrudo , Grant Rogers
IPC分类号： H01S3/067 , H01S3/082 , H01S3/091 , H01S5/026 , H01S5/065 , H01S5/0683 , H01S5/14 , H01S5/40 , H01S3/10
CPC分类号： H01S5/146 , G02B6/02076 , H01S5/4025 , G02B6/02057 , H01S2301/02 , H01S3/0826 , H01S5/065 , H01S5/0656 , H01S5/0657 , H01S5/141 , H01S5/4062
摘要： A fibre Bragg grating is used to stabilize the intensity and frequency fluctuations of a diode laser. The diode laser is connected with an opto-mechanical apparatus to the fibre which contains the grating. The grating is formed in the guided-mode region of the optical fibre using photorefractive techniques. The wavelength of maximum grating reflectivity is selected to lie near the maximum of the diode laser gain bandwidth. The magnitude and bandwidth of the grating reflectivity is sufficient to stabilize the diode laser output without appreciably reducing the optical output power from the end of the fibre. The bandwidth of the optical spectrum of the diode laser is increased or decreased relative to the solitary diode laser operating characteristics depending on the distance of the grating from the diode laser.
摘要翻译：光纤布拉格光栅用于稳定二极管激光器的强度和频率波动。二极管激光器与光机械设备连接到包含光栅的光纤。使用光折射技术在光纤的导模区域中形成光栅。选择最大光栅反射率的波长接近二极管激光器增益带宽的最大值。光栅反射率的幅度和带宽足以稳定二极管激光器输出，而不会明显地降低光纤端部的光输出功率。根据光栅与二极管激光器的距离，二极管激光器的光谱带宽相对于孤立二极管激光器工作特性而增加或减小。

7. 发明授权

US06240119B1 Apparatus for providing a stabilized laser source 有权
标题翻译：用于提供稳定的激光源的装置
公开(公告)号：US06240119B1
公开(公告)日：2001-05-29
申请号：US09464797
申请日：1999-12-16
申请人： Brian F. Ventrudo
发明人： Brian F. Ventrudo
IPC分类号： H01S3067
CPC分类号： H01S5/146 , H01S3/094003 , H01S5/0652
摘要： Apparatus is provided for an improved stabilized laser source comprising a laser source having a light beam output and an electrical input. An optical waveguide, such as an optical fiber, having an input end is optically coupled to the laser source to receive the light beam. A reflector in the optical fiber, such as a fiber grating, reflects a portion of the light beam output back into the laser source. The reflector is provided at a distance from the laser source permitting the laser source to switch between states of coherence and coherence collapse of operation. The electrical input of a drive signal for the laser source includes a modulated signal with variations in amplitude to the electrical input to control the variation in switching between the states of coherence and coherence collapse of the laser source so that continuous laser operation remains kink-free. The optical waveguide provides the laser source light beam output to an optical gain medium having an excited state of operation of duration equal to a relaxation time wherein intervals between the variations of drive current amplitude modulation are less than the relaxation time of the excited state of the optical gain medium.
摘要翻译：提供了一种用于改进的稳定激光源的装置，其包括具有光束输出和电输入的激光源。具有输入端的诸如光纤的光波导光学耦合到激光源以接收光束。诸如光纤光栅的光纤中的反射器将输出的光束的一部分反射回激光源。反射器设置在距离激光源一定距离处，允许激光源在相干状态和相干性操作崩溃之间切换。用于激光源的驱动信号的电输入包括具有与电输入的幅度变化的调制信号，以控制激光源的相干状态和相干性崩溃状态之间切换的变化，使得连续的激光操作保持无扭结。光波导将激光源光束输出到具有等于弛豫时间的持续时间的激发状态的光学增益介质，其中驱动电流幅度调制的变化之间的间隔小于激发状态的弛豫时间光增益介质。

8. 发明授权

US06058128A Apparatus for providing a stabilized laser source 失效
标题翻译：用于提供稳定的激光源的装置
公开(公告)号：US06058128A
公开(公告)日：2000-05-02
申请号：US621555
申请日：1996-03-25
申请人： Brian F. Ventrudo
发明人： Brian F. Ventrudo
IPC分类号： H01S3/094 , H01S5/14 , H01S3/13
CPC分类号： H01S5/146 , H01S3/094003 , H01S5/0652
摘要： Apparatus is provided for an improved stabilized laser source comprising a laser source having a light beam output and an electrical input. An optical waveguide, such as an optical fiber, having an input end is optically coupled to the laser source to receive the light beam. A reflector in the optical fiber, such as fiber grating, reflects a portion of the light beam output back into the laser source. The reflector is provided at a distance from the laser source permitting the laser source to switch between states of coherence and coherence collapse of operation. The electrical input of a drive signal for the laser source includes a modulated signal with variations in amplitude to the electrical input to control the variation in switching between the states of coherence and coherence collapse of the laser source so that continuous laser operation remains kink-free. The optical waveguide provides the laser source light beam output to an optical gain medium having an excited state of operation of duration equal to a relaxation time wherein intervals between the variations of drive current amplitude modulation are less than the relaxation time of the excited state of the optical gain medium.
摘要翻译：提供了一种用于改进的稳定激光源的装置，其包括具有光束输出和电输入的激光源。具有输入端的诸如光纤的光波导光学耦合到激光源以接收光束。诸如光纤光栅的光纤中的反射器反射出一部分输出到激光源中的光束。反射器设置在距离激光源一定距离处，允许激光源在相干状态和相干性操作崩溃之间切换。用于激光源的驱动信号的电输入包括具有与电输入的幅度变化的调制信号，以控制激光源的相干状态和相干性崩溃状态之间切换的变化，使得连续的激光操作保持无扭结。光波导将激光源光束输出到具有等于弛豫时间的持续时间的激发状态的光学增益介质，其中驱动电流幅度调制的变化之间的间隔小于激发状态的弛豫时间光增益介质。

9. 发明授权

US6044093A Fibre-grating-stabilized diode laser 失效
标题翻译：光纤光栅稳定二极管激光器
公开(公告)号：US6044093A
公开(公告)日：2000-03-28
申请号：US991665
申请日：1997-12-16
申请人： Brian F. Ventrudo , Grant Rogers
发明人： Brian F. Ventrudo , Grant Rogers
IPC分类号： H01S3/067 , H01S3/082 , H01S3/091 , H01S5/026 , H01S5/065 , H01S5/0683 , H01S5/14 , H01S5/40 , H01S3/10
CPC分类号： H01S5/146 , G02B6/02076 , H01S5/4025 , G02B6/02057 , H01S2301/02 , H01S3/0826 , H01S5/065 , H01S5/0656 , H01S5/0657 , H01S5/141 , H01S5/4062
摘要： A fiber Bragg grating is used to stabilize the intensity and frequency fluctuations of a diode laser. The diode laser is connected with an opto-mechanical apparatus to the fiber which contains the grating. The grating is formed in the guided-mode region of the optical fiber. The wavelength of maximum grating reflectivity is selected to lie near the maximum of the diode laser gain bandwidth. The magnitude and bandwidth of the grating reflectivity stabilizes the diode laser output without appreciably reducing the optical output power from the end of the fiber. The bandwidth of the optical spectrum of the diode laser is selected depending on the distance of the grating from the diode laser.
摘要翻译：光纤布拉格光栅用于稳定二极管激光器的强度和频率波动。二极管激光器与光机械设备连接到包含光栅的光纤。光栅形成在光纤的导模区域中。选择最大光栅反射率的波长接近二极管激光器增益带宽的最大值。光栅反射率的幅度和带宽稳定了二极管激光输出，而不会明显地降低光纤末端的光输出功率。二极管激光器的光谱的带宽根据光栅与二极管激光器的距离来选择。

10. 发明授权

US06233259B1 Fiber grating stabilized diode laser 有权
标题翻译：光纤光栅稳定二极管激光器
公开(公告)号：US06233259B1
公开(公告)日：2001-05-15
申请号：US09300143
申请日：1999-04-27
申请人： Brian F. Ventrudo , Grant Rogers
发明人： Brian F. Ventrudo , Grant Rogers
IPC分类号： H01S330
CPC分类号： H01S5/146 , G02B6/02057 , G02B6/02076 , H01S3/0826 , H01S5/065 , H01S5/0656 , H01S5/0657 , H01S5/141 , H01S5/4025 , H01S5/4062 , H01S2301/02
摘要： A fiber Bragg grating is used to stabilize the intensity and frequency fluctuations of a diode laser. The diode laser is connected with an opto-mechanical apparatus to the fiber which contains the grating. The grating is formed in the guided-mode region of the optical fiber. The wavelength of maximum grating reflectivity is selected to lie near the maximum of the diode laser gain bandwidth. The magnitude and bandwidth of the grating reflectivity stabilizes the diode laser output without appreciably reducing the optical output power from the end of the fiber. The bandwidth of the optical spectrum of the diode laser is selected depending on the distance of the grating from the diode laser.
摘要翻译：光纤布拉格光栅用于稳定二极管激光器的强度和频率波动。二极管激光器与光机械设备连接到包含光栅的光纤。光栅形成在光纤的导模区域中。选择最大光栅反射率的波长接近二极管激光器增益带宽的最大值。光栅反射率的幅度和带宽稳定了二极管激光输出，而不会明显地降低光纤末端的光输出功率。二极管激光器的光谱的带宽根据光栅与二极管激光器的距离来选择。

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