公开(公告)号：US20180051978A1

公开(公告)日：2018-02-22

申请号：US15785142

申请日：2017-10-16

Applicant: Axsun Technologies, Inc.

Inventor： Dale C. Flanders ,  Walid A. Atia ,  Bartley C. Johnson ,  Mark E. Kuznetsov ,  Carlos R. Melendez

IPC: G01B9/02 ,  H01S5/14 ,  H01S5/068 ,  H01S3/08 ,  H01S3/106 ,  H01S5/022 ,  H01S5/024

CPC classification number: G01B9/02091 ,  G01B9/02004 ,  G01B9/02044 ,  G01B9/02059 ,  G01B9/02069 ,  G01B2290/25 ,  H01S3/08013 ,  H01S3/08054 ,  H01S3/1067 ,  H01S5/02248 ,  H01S5/02415 ,  H01S5/068 ,  H01S5/141 ,  H01S5/146

Abstract: A frequency swept laser source for TEFD-OCT imaging includes an integrated clock subsystem on the optical bench with the laser source. The clock subsystem generates frequency clock signals as the optical signal is tuned over the scan band. Preferably the laser source further includes a cavity extender in its optical cavity between a tunable filter and gain medium to increase an optical distance between the tunable filter and the gain medium in order to control the location of laser intensity pattern noise. The laser also includes a fiber stub that allows for control over the cavity length while also controlling birefringence in the cavity.

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。

公开(公告)号：US08994954B2

公开(公告)日：2015-03-31

申请号：US13729587

申请日：2012-12-28

Applicant: Axsun Technologies, Inc.

Inventor： Walid A. Atia ,  Randal A. Murdza ,  Peter S. Whitney

IPC: G01B9/02 ,  H01S5/14 ,  H01S3/105

CPC classification number: H01S5/0657 ,  G01B9/02004 ,  G01B9/02067 ,  G01B9/02069 ,  G01B9/02091 ,  H01S3/105 ,  H01S5/1039 ,  H01S5/141 ,  H01S5/146 ,  H01S5/3013

Abstract: An optical coherence analysis system uses a laser swept source that is constrained to operate in a stable mode locked condition by modulating a drive current to the semiconductor optical amplifier as function of wavelength or synchronously with the drive voltage of the laser's tunable element based on stability map for the laser.

Abstract translation: 光学相干分析系统使用激光扫描源，其被限制为在稳定模式锁定状态下操作，通过调制作为波长的函数的半导体光放大器的驱动电流或与激光器的可调元件的驱动电压基于稳定性图同步 为激光。

公开(公告)号：US08836953B2

公开(公告)日：2014-09-16

申请号：US13670938

申请日：2012-11-07

Applicant: Axsun Technologies, Inc.

Inventor： Bartley C. Johnson

IPC: G01B11/02 ,  G01B9/02

CPC classification number: G01B9/02 ,  G01B9/02004 ,  G01B9/02069 ,  G01B9/02091

Abstract: An OCT system and particularly its clock system generates a k-clock signal but also generates an optical frequency reference sweep signal that, for example, indicates the start of the sweep or an absolute frequency reference associated with the sweep at least for the purposes of sampling of the interference signal and/or processing of that interference signal into the OCT images. This optical frequency reference sweep signal is generated at exactly the same frequency of the swept optical signal from sweep to sweep of that signal. This ensures that the sampling of the interference signal occurs at the same frequencies, sweep to sweep. Such a system is relevant to a number of applications in which it is important that successive sweeps of the swept optical signal be very stable with respect to each other.

Abstract translation: OCT系统，特别是其时钟系统产生k时钟信号，但是还产生光频参考扫描信号，其例如指示扫描的开始或与扫描相关联的绝对频率参考至少为了采样的目的 的干扰信号和/或将该干扰信号处理到OCT图像中。 这个光频参考扫描信号在扫描光信号的扫描到扫描的完全相同的频率上产生。 这确保干扰信号的采样以相同的频率发生，扫掠扫描。 这样的系统与许多应用相关，其中重要的是扫描光信号的连续扫描相对于彼此非常稳定。

公开(公告)号：US20140125991A1

公开(公告)日：2014-05-08

申请号：US13670938

申请日：2012-11-07

Applicant: Axsun Technologies, Inc

Inventor： Bartley C. Johnson

IPC: G01B9/02

CPC classification number: G01B9/02 ,  G01B9/02004 ,  G01B9/02069 ,  G01B9/02091

Abstract: An OCT system and particularly its clock system generates a k-clock signal but also generates an optical frequency reference sweep signal that, for example, indicates the start of the sweep or an absolute frequency reference associated with the sweep at least for the purposes of sampling of the interference signal and/or processing of that interference signal into the OCT images. This optical frequency reference sweep signal is generated at exactly the same frequency of the swept optical signal from sweep to sweep of that signal. This ensures that the sampling of the interference signal occurs at the same frequencies, sweep to sweep. Such a system is relevant to a number of applications in which it is important that successive sweeps of the swept optical signal be very stable with respect to each other. One specific example is phase sensitive OCT. This requires that the sampling of the interference signal occurs at exactly the same frequency/wavelength on every axial line (A-line). Such phase sensitive OCT has particular applications in Doppler OCT, synthetic aperture imaging, and in the subtraction of background noise sources from the OCT image.

Abstract translation: OCT系统，特别是其时钟系统产生k时钟信号，但是还产生光频参考扫描信号，其例如指示扫描的开始或与扫描相关联的绝对频率参考至少为了采样的目的 的干扰信号和/或将该干扰信号处理到OCT图像中。 这个光频参考扫描信号在扫描光信号的扫描到扫描的完全相同的频率上产生。 这确保干扰信号的采样以相同的频率发生，扫掠扫描。 这样的系统与许多应用相关，其中重要的是扫描光信号的连续扫描相对于彼此非常稳定。 一个具体的例子是相位敏感OCT。 这要求干扰信号的采样在每个轴线（A线）上以完全相同的频率/波长发生。 这种相位敏感OCT在多普勒OCT，合成孔径成像以及从OCT图像中减去背景噪声源方面具有特殊应用。

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。

公开(公告)号：US20130305513A1

公开(公告)日：2013-11-21

申请号：US13946214

申请日：2013-07-19

Applicant: Axsun Technologies, Inc.

Inventor： Dale C. Flanders ,  James W. Getz ,  Walid A. Atia ,  Peter S. Whitney ,  Mark E. Kuznetsov

IPC: G01Q60/22

CPC classification number: G01Q60/22 ,  A61B5/0066 ,  A61B5/0084 ,  A61B5/02007 ,  A61B2562/12 ,  G02B23/2469

Abstract: An optical probe for emitting and/or receiving light within a body comprises an optical fiber that transmits and/or receives an optical signal, a silicon optical bench including a fiber groove running longitudinally that holds an optical fiber termination of the optical fiber and a reflecting surface that optically couples an endface of the optical fiber termination to a lateral side of the optical bench. The fiber groove is fabricated using silicon anisotropic etching techniques. Some examples use a housing around the optical bench that is fabricated using LIGA or other electroforming technology. A method for forming lens structure is also described that comprises forming a refractive lens in a first layer of a composite wafer material, such as SOI (silicon on insulator) wafers and forming an optical port through a backside of the composite wafer material along an optical axis of the refractive lens. The refractive lens is preferably formed using grey-scale lithography and dry etching the first layer.

Abstract translation: 用于在体内发射和/或接收光的光学探针包括传输和/或接收光信号的光纤，包括纵向延伸的光纤槽的硅光学台，其保持光纤的光纤端接和反射 表面，其将光纤端接件的端面光学耦合到光学平台的侧面。 使用硅各向异性蚀刻技术制造纤维槽。 一些例子使用使用LIGA或其他电铸技术制造的光学平台周围的外壳。 还描述了一种用于形成透镜结构的方法，其包括在诸如SOI（绝缘体上硅）晶片的复合晶片材料的第一层中形成折射透镜，并沿着光学器件通过复合晶片材料的背面形成光学端口 折射透镜的轴线。 折射透镜优选使用灰度光刻形成并且对第一层进行干蚀刻。

公开(公告)号：US20040136433A1

公开(公告)日：2004-07-15

申请号：US10683979

申请日：2003-10-10

Applicant: AXSUN Technologies, Inc.

Inventor： Mark E. Kuznetsov

IPC: H01S003/08

CPC classification number: H01S5/18388 ,  H01S3/08045 ,  H01S3/08059 ,  H01S3/08072 ,  H01S5/141 ,  H01S2301/166

Abstract: An optical resonator including is designed is to degrade the ability of the resonator to support suppress higher order transverse spatial modes. The inventive optical resonator forces Higher higher order transverse modes to be fundamentally unstable in the inventive optical resonator, ultimately achieving ultimately to achieving single transverse mode resonator operation. Specifically, the bounded phase deflection mirror shape or intracavity lens profile is tailored to confine the fundamental mode while rendering the higher order modes unstable. This has application in MEMS/MOEMS optical resonator devices by suppressing the side modes and increasing the side mode suppression ratio (SMSR), as well as improving SMSR tolerance to device external alignment, for example. This also has application to achieving single transverse mode operation in laser resonators, such as in semiconductor vertical-cavity surface-emitting lasers (VCSEL).

Abstract translation: 包括设计的光谐振器是降低谐振器支持抑制高阶横向空间模式的能力。 本发明的光学谐振器迫使更高阶的横向模式在本发明的光学谐振器中基本上不稳定，最终最终实现实现单一横模谐振器操作。 具体来说，限定相位偏转镜形状或腔内透镜轮廓被定制以限制基本模式，同时使较高阶模态不稳定。 例如，通过抑制侧模式和增加侧模抑制比（SMSR）以及改善对设备外部对准的SMSR容限，可以在MEMS / MOEMS光谐振器中应用。 这也适用于在半导体垂直腔表面发射激光器（VCSEL）中实现激光谐振器中的单横模操作。

公开(公告)号：US20040100686A1

公开(公告)日：2004-05-27

申请号：US10392353

申请日：2003-03-19

Applicant: AXSUN Technologies, Inc.

Inventor： Dale C. Flanders ,  Walid Atia ,  Eric E. Fitch ,  Minh Van Le ,  Randal A. Murdza ,  Robert L. Payer ,  Jeffrey A. Korn ,  Xiaomei Wang ,  Walter R. Buchwald ,  L. James Newman III

IPC: H01S003/00

CPC classification number: H01S5/02216 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/0683

Abstract: A detector system for a fiber optic component is insensitive to stray light. Specifically, the invention comprises a detector chip, which converts received light into an electric signal. A baffle substrate is positioned over the detector chip. This baffle substrate has a transmission port through which an optical signal is transmitted to the detector chip. As a result, light that is not directed to be transmitted through the port is blocked by the baffle substrate. In this way, it rejects stray light that may be present in the hermetic package. A detector substrate is provided on which the detector chip is mounted. This detector substrate preferably comprises electrical traces to which the detector chip is electrically connected. The detector substrate can further comprise bond pads for wire bonding to make electrical connections to the electrical traces.

Abstract translation: 用于光纤部件的检测器系统对杂散光不敏感。 具体地，本发明包括将接收的光转换成电信号的检测器芯片。 挡板基板位于检测器芯片上。 该挡板基板具有传输端口，通过该传输端口将光信号传输到检测器芯片。 结果，不被透射通过端口的光被挡板衬底阻挡。 以这种方式，它拒绝可能存在于密封包装中的杂散光。 设置有检测器芯片安装在其上的检测器基板。 该检测器基板优选地包括检测器芯片电连接到的电迹线。 检测器基板还可以包括用于引线键合的接合焊盘以与电迹线进行电连接。

公开(公告)号：US20030210847A1

公开(公告)日：2003-11-13

申请号：US09934664

申请日：2001-08-22

Applicant: AXSUN Technologies, Inc.

Inventor： Jeffrey A. Korn

IPC: G02B006/26 ,  G02B006/42

CPC classification number: G02B6/4246 ,  G01J3/26 ,  G02B6/29358 ,  G02B6/29395 ,  G02B6/4215 ,  G02B6/4251 ,  G02B6/4257 ,  G02B6/4265 ,  G02B6/4271

Abstract: A tunable optical filter system 10 has a reference source system 24 that is integrated with the tunable filter 22 on bench 14 and within hermetic package 12. The reference source system 24 is temporally modulated to decrease interference or crosstalk into the scan of the optical signal 64 of interest. Specifically, a system controller 100 energizes the reference source during a reference scan in which the tunable filter 22 is scanned across a spectrum of the optical reference 66. The controller 100, however, lowers, such as simply decreasing or entirely cutting, power to the reference source system 24 during a signal scan, in which the tunable filter 22 is scanned across the optical signal's spectrum. In this way, interference during the signal scan from the reference source system is reduced.

Abstract translation: 可调谐光学滤波器系统10具有参考源系统24，该参考源系统24与台架14上的可调谐滤波器22和密封封装12中的集成。参考源系统24被时间调制以减小光信号64的扫描中的干扰或串扰 出于兴趣。 具体来说，系统控制器100在参考扫描期间激励参考源，其中可调谐滤波器22跨越光学参考66的光谱进行扫描。然而，控制器100降低，例如简单地减小或完全切割到 参考源系统24在信号扫描期间，其中可调谐滤波器22跨越光信号的频谱被扫描。 以这种方式，减少了来自参考源系统的信号扫描期间的干扰。