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    Filtered ASE swept source for OCT medical imaging
    11.
    发明授权
    Filtered ASE swept source for OCT medical imaging 有权

    公开(公告)号：US09696471B2

    公开(公告)日：2017-07-04

    申请号：US13847616

    申请日：2013-03-20

    Applicant: Axsun Technologies, Inc.

    Inventor： Dale C. Flanders ,  Walid A. Atia ,  Mark E. Kuznetsov

    IPC: G01B9/02 ,  G02B5/22 ,  G01J3/10 ,  G01J3/26 ,  G01N21/47 ,  G01J3/433

    CPC classification number: G02B5/22 ,  G01B9/02004 ,  G01B9/02091 ,  G01J3/10 ,  G01J3/26 ,  G01J3/4338 ,  G01N21/4795

    Abstract: An integrated swept wavelength optical source uses a filtered ASE signal with an optical amplifier and tracking filter. This source comprises a micro optical bench, a source for generating broadband light, a first tunable Fabry Perot filter, installed on the bench, for spectrally filtering the broadband light from the broadband source to generate a narrowband tunable signal, an amplifier, installed on the bench, for amplifying the tunable signal, and a second tunable Fabry Perot filter, installed on the bench, for spectrally filtering the amplified tunable signal from the amplifier. A self-tracking arrangement is also possible where a single tunable filter both generates the narrowband signal and spectrally filters the amplified signal. In some examples, two-stage amplification is provided. The use of a single bench implementation yields a low cost high performance system. For example, polarization control between components is no longer necessary.

    OCT Medical Imaging System Using Gain Waveguide Array Swept Source
    12.
    发明申请
    OCT Medical Imaging System Using Gain Waveguide Array Swept Source 有权
    OCT医疗成像系统使用增益波导阵列扫描源

    公开(公告)号：US20140268166A1

    公开(公告)日：2014-09-18

    申请号：US13837425

    申请日：2013-03-15

    Applicant: AXSUN TECHNOLOGIES, INC.

    Inventor： Dale C. Flanders

    IPC: G01B9/02

    CPC classification number: G01B9/02 ,  G01B9/02004 ,  G01B9/02044 ,  G01B9/02091

    Abstract: An optical coherence tomography system uses an optical source that comprises a series of gain waveguides that generate light at the frequencies at which the interference signal is to be sampled. In this way, the optical source generates a discretely tuned optical signal. This has the advantage that the tuning can be directly controlled by a controller that is also used to synchronize the sampling of the interference signal. This avoids the need for separate frequency clock synchronization. In embodiments, the gain waveguides are fabricated from one or more semiconductor edge emitting bars. In some implementations, the gain waveguides comprise periodic structures that define the frequency of operation of the waveguide. However in other implementations, the combiner comprises a dispersive element, such as a diffractive grating, that provides frequency specific feedback to each waveguide.

    Abstract translation: 光学相干断层摄影系统使用包括一系列增益波导的光源，该增益波导在干扰信号被采样的频率处产生光。 以这种方式，光源产生离散调谐的光信号。 这具有的优点是调谐可以由也用于同步干扰信号的采样的控制器直接控制。 这避免了单独的频率时钟同步的需要。 在实施例中，增益波导由一个或多个半导体边缘发射棒制成。 在一些实施方案中，增益波导包括限定波导的操作频率的周期性结构。 然而，在其他实现中，组合器包括向每个波导提供频率特定反馈的色散元件，例如衍射光栅。

    OCT Swept Laser with Cavity Length Compensation
    13.
    发明申请
    OCT Swept Laser with Cavity Length Compensation 审中-公开
    OCT扫描激光器具有腔长度补偿

    公开(公告)号：US20140218741A1

    公开(公告)日：2014-08-07

    申请号：US14144636

    申请日：2013-12-31

    Applicant: Axsun Technologies, Inc.

    Inventor： Bartley C. Johnson ,  Dale C. Flanders

    IPC: H01S5/10 ,  G01B9/02

    CPC classification number: G01B9/02091 ,  H01S3/08009 ,  H01S3/08013 ,  H01S3/083 ,  H01S3/105 ,  H01S3/1062 ,  H01S5/02284 ,  H01S5/141 ,  H01S5/146

    Abstract: An optical coherence tomography system utilizes an optical swept laser that has cavity length compensator that changes an optical length of the laser cavity for different optical frequencies to increase the length of the laser cavity for lower optical frequencies. Specifically, a spectral separation between longitudinal cavity modes of the laser cavity is shortened or alternatively lengthened as a passband of a cavity tuning element sweeps through a scanband of the swept optical signal. In some examples, the compensator is implemented as two gratings. In others, it is implemented as a chirped grating device.

    Abstract translation: 光学相干断层扫描系统利用具有腔长补偿器的光扫描激光器，其改变不同光频率的激光腔的光学长度，以增加用于较低光频率的激光腔的长度。 具体地说，当空腔调谐元件的通带扫过扫描光信号的扫描带时，激光腔的纵向腔模之间的光谱间隔被缩短或者可选地延长。 在一些示例中，补偿器被实现为两个光栅。 在其他方面，它被实现为啁啾光栅装置。

    Sheath with Optically Interrogatable Sensors
    14.
    发明申请
    Sheath with Optically Interrogatable Sensors 有权
    带光学可询问传感器的护套

    公开(公告)号：US20140163392A1

    公开(公告)日：2014-06-12

    申请号：US13712368

    申请日：2012-12-12

    Applicant: AXSUN TECHNOLOGIES, INC.

    Inventor： Dale C. Flanders

    IPC: A61B5/0215 ,  A61B5/01

    CPC classification number: A61B5/02154 ,  A61B1/04 ,  A61B5/0002 ,  A61B5/0066 ,  A61B5/0084 ,  A61B5/01 ,  A61B5/02156 ,  A61B5/02158 ,  A61B5/6852 ,  A61B2562/0247 ,  A61B2562/0271 ,  A61B2562/043 ,  A61B2562/12 ,  A61B2562/164

    Abstract: An intravascular sensor system including an array of pressure and/or temperature sensors for detecting pressure and/temperature. In one example, the sensors are interrogated with an optical catheter. In this example, the swept source is able to acquire both image and pressure/temperature data of a patient's vessel or artery. In another example, the intravascular pressure sensor system has a sheath embedded with pressure sensors in the sheath wall. Other examples include the process of making and using the intravascular pressure sensor system.

    Abstract translation: 包括用于检测压力和/温度的压力和/或温度传感器阵列的血管内传感器系统。 在一个示例中，用光学导管询问传感器。 在该示例中，扫掠源能够获取患者的血管或动脉的图像和压力/温度数据。 在另一个实例中，血管内压力传感器系统具有在护壁内嵌有压力传感器的护套。 其他实例包括制造和使用血管内压力传感器系统的过程。

    Multi-speed OCT swept source with optimized k-clock
    15.
    发明申请
    Multi-speed OCT swept source with optimized k-clock 有权
    具有优化k时钟的多速OCT扫频源

    公开(公告)号：US20130271772A1

    公开(公告)日：2013-10-17

    申请号：US13650665

    申请日：2012-10-12

    Applicant: AXSUN TECHNOLOGIES, INC.

    Inventor： Bartley C. Johnson ,  Brian Goldberg ,  Dale C. Flanders

    IPC: G01B9/02

    CPC classification number: G01B9/02004 ,  G01B9/02007 ,  G01B9/02069 ,  G01B9/02091

    Abstract: An optical coherence tomography system utilizes an optical swept source that frequency scans at least two different sweep rates. In this way, the system can perform large depth scans of the sample and then the same system can perform shorter depth high precision scans, in one specific example. In order to optimally use the analog to digital converter that samples the interference signal, the system further samples the interference signals at different optical frequency sampling intervals depending upon the selected sweep rates of the optical swept source. This allows the system to adapt to different sweep rates in an optimal fashion.

    Abstract translation: 光学相干断层摄影系统利用光扫描源，其频率扫描至少两个不同的扫描速率。 这样，在一个具体的例子中，系统可以对样本执行大的深度扫描，然后相同的系统可以执行较短的深度高精度扫描。 为了最佳地使用对干扰信号进行采样的模数转换器，系统进一步根据所选择的扫频源的扫描速率，以不同的光频采样间隔采样干扰信号。 这允许系统以最佳方式适应不同的扫描速率。

    OCT swept laser with high coherence signal extraction
    19.
    发明申请
    OCT swept laser with high coherence signal extraction 有权
    OCT扫描激光具有高相干信号提取

    公开(公告)号：US20150184994A1

    公开(公告)日：2015-07-02

    申请号：US14144634

    申请日：2013-12-31

    Applicant: Axsun Technologies, Inc.

    Inventor： Dale C. Flanders

    IPC: G01B9/02 ,  H01S5/10 ,  H01S5/183 ,  H01S3/08 ,  H01S5/30

    CPC classification number: G01B9/02004 ,  G01B9/02091 ,  H01S3/08054 ,  H01S3/0816 ,  H01S3/083 ,  H01S3/1062 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/101 ,  H01S5/141

    Abstract: An optical coherence tomography system utilizes an optical swept laser that has improved coherence length in the swept optical signal. This is accomplished using an intra-cavity element that extracts the tunable optical signal at the optimal location within the laser's resonant cavity. Generally this location is between the intracavity tuning element and the cavity's gain element so that light coming from the tuning element is extracted. In general in lasers, the gain element adds noise and chirp and this degrades the tunable optical signal's coherence length.

    Abstract translation: 光学相干断层摄影系统利用在扫描光信号中具有改善的相干长度的光扫描激光器。 这是使用在激光器的谐振腔内的最佳位置处提取可调谐光信号的腔内元件来实现的。 通常，该位置在腔内调谐元件和空腔增益元件之间，使得来自调谐元件的光被提取。 通常在激光器中，增益元件增加了噪声和啁啾声，这降低了可调光信号的相干长度。

    ASE Swept Source with Self-Tracking Filter for OCT Medical Imaging
    20.
    发明申请
    ASE Swept Source with Self-Tracking Filter for OCT Medical Imaging 有权
    ASE扫描源与自动跟踪滤波器用于OCT医疗成像

    公开(公告)号：US20130321820A1

    公开(公告)日：2013-12-05

    申请号：US13960027

    申请日：2013-08-06

    Applicant: Axsun Technologies, Inc.

    Inventor： Dale C. Flanders ,  Walid A. Atia ,  Mark E. Kuznetsov

    IPC: F21V9/00 ,  G01B9/02

    CPC classification number: F21V9/00 ,  G01B9/02004 ,  G01B9/02091 ,  H01S5/005 ,  H01S5/0064 ,  H01S5/0078 ,  H01S5/02216 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/5018 ,  H01S5/5036 ,  H01S5/5063 ,  H01S2301/02

    Abstract: An integrated swept wavelength tunable optical source uses a narrowband filtered broadband signal with an optical amplifier and self-tracking filter. This source comprises a micro optical bench, a source for generating broadband light, a tunable Fabry Perot filter, installed on the bench, for spectrally filtering the broadband light from the broadband source to generate a narrowband tunable signal, an amplifier, installed on the bench, for amplifying the tunable signal. The self-tracking arrangement is used where a single tunable filter both generates the narrowband signal and spectrally filters the amplified signal. In some examples, two-stage amplification is provided. The use of a single bench implementation yields a low cost high performance system. For example, polarization control between components is no longer necessary.

    Abstract translation: 集成扫描波长可调光源使用窄带滤波宽带信号与光放大器和自跟踪滤波器。 该源包括安装在工作台上的用于产生宽带光源的微型光学平台，可调谐法布里珀罗滤波器，用于对来自宽带源的宽带光进行频谱滤波以产生窄带可调信号，安装在台架上的放大器 ，用于放大可调信号。 自我跟踪装置用于单个可调谐滤波器都产生窄带信号并对放大的信号进行频谱滤波。 在一些实例中，提供了两级放大。 使用单台实现产生低成本的高性能系统。 例如，不再需要组件之间的极化控制。

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