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11. 发明授权

US06445851B1 Tapered fiber gratings and applications 失效
标题翻译：锥形光纤光栅和应用
公开(公告)号：US06445851B1
公开(公告)日：2002-09-03
申请号：US09461013
申请日：1999-12-15
申请人： George A. Rakuljic , Anthony S. Kewitsch
发明人： George A. Rakuljic , Anthony S. Kewitsch
IPC分类号： G02B634
CPC分类号： G02B6/29317 , G02B6/021 , G02B6/02119 , G02B6/2932 , G02B6/29328 , G02B6/29334 , G02B6/29383
摘要： Optical filter devices in accordance with the invention are based on tapered optical fibers having transversely distributed refractive index variations in a small diameter waist region where waves are propagated in combined cladding/air-guided modes. The grating has a periodicity selected for reflection of a selected center wavelength and the waist diameter and grating pattern split the wavelengths of the lossy cladding modes from the backreflected signals by more than 10 nm. Such wavelength selective optical fiber devices have a variety of applications. In one application, a tapered fiber grating with optical circulators is used to add or drop optical signals for communication via a common transmission path. In another application, the tapered fiber grating is used with grating assisted mode couplers and circulators to form an add/drop multiplexer. In another application, these components are used with optical switches to produce programmable add/drop filters and crossconnects.
摘要翻译：根据本发明的光学滤波器装置基于在组合的包层/空气引导模式中传播波的小直径腰部区域中具有横向分布的折射率变化的锥形光纤。光栅具有选择用于反射所选择的中心波长的周期性，并且腰部直径和光栅图案将有损包层模式的波长与背反射信号分开大于10nm。这种波长选择性光纤器件具有多种应用。在一个应用中，使用具有光循环器的锥形光纤光栅来添加或分离用于通过公共传输路径进行通信的光信号。在另一个应用中，锥形光纤光栅与光栅辅助模式耦合器和循环器一起使用以形成分插复用器。在另一个应用中，这些组件与光学开关一起使用以产生可编程的分插式滤波器和交叉连接。

12. 发明授权

US5805751A Wavelength selective optical couplers 失效
标题翻译：波长选择光耦合器
公开(公告)号：US5805751A
公开(公告)日：1998-09-08
申请号：US703357
申请日：1996-08-26
申请人： Anthony S. Kewitsch , George A. Rakuljic , Amnon Yariv
发明人： Anthony S. Kewitsch , George A. Rakuljic , Amnon Yariv
IPC分类号： G02B6/293 , G02B6/12 , G02B6/28 , G02B6/34 , H04J14/02 , G02B6/26
CPC分类号： G02B6/29334 , G02B6/02114 , G02B6/02133 , G02B6/02138 , G02B6/022 , G02B6/02204 , G02B6/12007 , G02B6/29383 , G02B6/02085 , G02B6/021 , G02B6/02109 , G02B6/02152 , G02B6/2835 , H04J14/0201 , H04J14/0206 , H04J14/0209 , H04J14/0213 , H04J14/0219
摘要： A wavelength selective optical fiber coupler having various applications in the field of optical communications is disclosed. The coupler is composed of dissimilar waveguides in close proximity. A light induced, permanent index of refraction grating is recorded in the coupler waist. The grating filters and transfers energy within a particular range of wavelengths from a first waveguide to a second waveguide. Transversely asymmetric gratings provide an efficient means of energy transfer. The coupler can be used to combine or multiplex a plurality of lasers operating at slightly different wavelengths into a single fiber. Other embodiments such as a dispersion compensator and gain flattening filter are disclosed.
摘要翻译：公开了一种在光通信领域具有各种应用的波长选择性光纤耦合器。耦合器由相邻的不同波导组成。光诱导的永久折射光栅被记录在耦合器的腰部。光栅在从第一波导到第二波导的特定波长范围内对能量进行滤波和传递。横向不对称光栅提供了有效的能量传递手段。耦合器可用于将以稍微不同的波长工作的多个激光器组合或多路复用到单个光纤中。公开了诸如色散补偿器和增益平坦化滤光器的其它实施例。

13. 发明授权

US5440669A Photorefractive systems and methods 失效
$Photorefractive systems and methods$
标题翻译：光折射系统和方法
公开(公告)号：US5440669A
公开(公告)日：1995-08-08
申请号：US908298
申请日：1992-07-02
申请人： George A. Rakuljic , Amnon Yariv
发明人： George A. Rakuljic , Amnon Yariv
IPC分类号： G02B5/18 , G02B5/20 , G02B5/32 , G02B6/02 , G02B6/34 , G03H1/02 , G03H1/04 , G03H1/26 , G03H1/28 , G06K9/76 , G11B7/0065 , G11C13/04 , H01S3/06 , H01S3/08 , H01S3/109 , H01S3/16 , G03H1/18
CPC分类号： H01S3/16 , G02B5/1857 , G02B5/203 , G02B5/32 , G02B6/12007 , G02B6/29308 , G02B6/2931 , G02B6/29311 , G02B6/4215 , G03H1/02 , G03H1/0248 , G03H1/28 , G06K9/76 , G11B7/0065 , G11C13/044 , H01S3/08009 , H01S3/109 , G02B6/2706 , G02B6/29314 , G02B6/29395 , G03H2001/026 , G03H2001/0268 , G03H2001/0415 , G03H2001/0439 , G03H2001/2231 , G03H2001/266
摘要： A new type of holographic recording in photorefractive crystals is disclosed, termed orthogonal data storage, in which counterpropagating, reflection mode holograms are wavelength multiplexed to form gratings lying along a common axis. It is shown that this configuration provides substantial improvements in data storage capacity in comparison to prior art systems and that higher coupling coefficients are achieved. In consequence, not only storage of data but a wide range of other devices including wavelength selective filters, lenses and optical correlation systems are disclosed. Further, methods of writing and processing metastable images are disclosed which substantially improve the strength of the gratings that are permanently developed in the medium. These methods include advantageous use of electrical potentials and photovoltaic properties, together with different interrelationships during processing.
摘要翻译：公开了一种新型的光折变晶体中的全息记录，称为正交数据存储，其中反向传播的反射模式全息图被波长多路复用以形成沿着公共轴的光栅。显示出与现有技术系统相比，该配置提供了数据存储容量的实质性改进，并且实现了更高的耦合系数。因此，不仅公开了数据的存储，而且公开了包括波长选择滤光器，透镜和光学相关系统在内的宽范围的其它器件。此外，公开了写入和处理亚稳态图像的方法，其基本上改善了在介质中永久显影的光栅的强度。这些方法包括在处理期间有利地使用电势和光伏特性以及不同的相互关系。

14. 发明授权

US07995630B2 High performance tunable lasers utilizing optical phase-locked loops 有权
标题翻译：采用光锁相环的高性能可调激光器
公开(公告)号：US07995630B2
公开(公告)日：2011-08-09
申请号：US12416150
申请日：2009-04-01
申请人： George A. Rakuljic
发明人： George A. Rakuljic
IPC分类号： H01S3/13 , H01S3/00
CPC分类号： H01S5/4006 , H01S5/0085 , H01S5/06246 , H01S5/0687 , H01S5/4012 , H01S2301/02
摘要： This invention relates to opto-electronic systems using semiconductor lasers driven by optical phase-locked loops that control the laser's optical phase and frequency. Feedback control provides a means for precise control of optical frequency and phase, including the ability for broadband electronic tunability of optical signals and the cascading of multiple lasers for enhanced tunability and coherent combining for increased output power.
摘要翻译：本发明涉及使用由控制激光器的光学相位和频率的光学锁相环驱动的半导体激光器的光电子系统。反馈控制提供了一种用于精确控制光频率和相位的手段，包括光信号的宽带电子可调谐能力和多个激光器的级联，以增强可调谐性和相干组合，以提高输出功率。

15. 发明申请

US20090296751A1 ELECTRONICALLY PHASE-LOCKED LASER SYSTEMS 有权
标题翻译：电子锁相激光系统
公开(公告)号：US20090296751A1
公开(公告)日：2009-12-03
申请号：US12020424
申请日：2008-01-25
申请人： ANTHONY S. KEWITSCH , GEORGE A. RAKULJIC
发明人： ANTHONY S. KEWITSCH , GEORGE A. RAKULJIC
IPC分类号： H01S3/098 , H01S3/00 , H01S5/065
CPC分类号： H01S3/2383 , H01S3/06754 , H01S3/10053 , H01S3/1618 , H01S3/2308 , H01S5/042 , H01S5/06821 , H01S5/4025
摘要： Semiconductor diode lasers are phase-locked by direct current injection and combined to form a single coherent output beam. The optical power is amplified by use of fiber amplifiers. Electronically control of the optical phases of each emitter enables power efficient combining of output beams to be maintained under dynamic conditions.
摘要翻译：半导体二极管激光器通过直流注入锁相并组合形成单个相干输出光束。光功率通过使用光纤放大器放大。电子控制每个发射器的光学相位使能够有效地组合输出光束以在动态条件下保持。

16. 发明申请

US20090245306A1 High Performance Tunable Lasers Utilizing Optical Phase-Locked Loops 有权
标题翻译：高性能可调谐激光器利用光锁相环
公开(公告)号：US20090245306A1
公开(公告)日：2009-10-01
申请号：US12416150
申请日：2009-04-01
申请人： George A. Rakuljic
发明人： George A. Rakuljic
IPC分类号： H01S3/13
CPC分类号： H01S5/4006 , H01S5/0085 , H01S5/06246 , H01S5/0687 , H01S5/4012 , H01S2301/02
摘要： This invention relates to opto-electronic systems using semiconductor lasers driven by optical phase-locked loops that control the laser's optical phase and frequency. Feedback control provides a means for precise control of optical frequency and phase, including the ability for broadband electronic tunability of optical signals and the cascading of multiple lasers for enhanced tunability and coherent combining for increased output power.
摘要翻译：本发明涉及使用由控制激光器的光学相位和频率的光学锁相环驱动的半导体激光器的光电子系统。反馈控制提供了一种用于精确控制光频率和相位的手段，包括光信号的宽带电子可调谐能力和多个激光器的级联，以增强可调谐性和相干组合，以提高输出功率。

17. 发明授权

US06459487B1 System and method for fabricating components of precise optical path length 失效
公开(公告)号：US06459487B1
公开(公告)日：2002-10-01
申请号：US09944126
申请日：2001-09-04
申请人： Gang Paul Chen , Avishay Eyal , Anthony S. Kewitsch , Victor Leyva , George A. Rakuljic
发明人： Gang Paul Chen , Avishay Eyal , Anthony S. Kewitsch , Victor Leyva , George A. Rakuljic
IPC分类号： G01B902
CPC分类号： G02B6/29302 , G02B6/272 , G02B6/2766 , G02B6/2773 , G02B6/29358
摘要： Optical components, particularly microoptic glass components used in synthesizing birefringence in filter systems based on polarization interferometer techniques, are fabricated using systems and methods which provide accurate frequency periodicity measurements. These measurements are derived from differential delays induced by in-process glass elements between beam components in a polarization interferometer unit and from progressive wavelength scanning across a wavelength band of interest. The consequent sinusoidal output variation has peak to peak spacings which are measured to provide frequency periodicity values from which precise length corrections for the optical elements can be calculated.

18. 发明授权

US5875272A Wavelength selective optical devices 失效
标题翻译：波长选择光学器件
公开(公告)号：US5875272A
公开(公告)日：1999-02-23
申请号：US738068
申请日：1996-10-25
申请人： Anthony S. Kewitsch , George A. Rakuljic , Amnon Yariv
发明人： Anthony S. Kewitsch , George A. Rakuljic , Amnon Yariv
IPC分类号： G02B26/00 , G02B6/12 , G02B6/28 , G02B6/287 , G02B6/293 , G02B6/34 , G02F1/01 , G02F1/313 , H01S3/06
CPC分类号： G02F1/3132 , G02B6/02114 , G02B6/02133 , G02B6/02138 , G02B6/022 , G02B6/02204 , G02B6/12007 , G02B6/29334 , G02B6/29383 , G02B6/29395 , G02B6/02085 , G02B6/02109 , G02B6/02152 , G02B6/2835 , G02B6/29322 , G02F2203/585
摘要： Wavelength selective devices and subsystems having various applications in the field of optical communications are disclosed. These devices and subsystems are composed of bi-directional grating assisted mode couplers. The high add/drop efficiency and low loss of this coupler enable low loss wavelength selective elements such as optical switches, amplifiers, routers, and sources to be fabricated. The grating assisted mode coupler can be wavelength tuned by modifying the optical properties of the coupler interaction region. A programmable, wavelength selective router composed of multiple grating assisted mode couplers is also disclosed.
摘要翻译：公开了在光通信领域具有各种应用的波长选择装置和子系统。这些设备和子系统由双向光栅辅助模式耦合器组成。该耦合器的高加/减效率和低损耗使低损耗波长选择元件（如光开关，放大器，路由器和待制造的源）成为可能。光栅辅助模耦合器可以通过改变耦合器相互作用区域的光学特性进行波长调谐。还公开了由多个光栅辅助模式耦合器组成的可编程波长选择性路由器。

19. 发明授权

US5491570A Methods and devices for using photorefractive materials at infrared wavelengths 失效
$Methods and devices for using photorefractive materials at infrared wavelengths$
标题翻译：在红外波段使用光折射材料的方法和装置
公开(公告)号：US5491570A
公开(公告)日：1996-02-13
申请号：US991571
申请日：1992-12-16
申请人： George A. Rakuljic , Victor Leyva
发明人： George A. Rakuljic , Victor Leyva
IPC分类号： G02B5/18 , G02B5/32 , G03H1/02 , G03H1/04 , G03H1/28 , G06K9/76 , G11B7/0065 , G11C13/04 , H01S3/06 , H01S3/08 , H01S3/109 , H01S3/16 , G03H1/18 , G03H1/26
CPC分类号： G03H1/28 , G02B5/1857 , G03H1/02 , G03H1/04 , G06K9/76 , G11B7/0065 , G11C13/044 , H01S3/06 , H01S3/08009 , H01S3/109 , H01S3/16 , G02B5/32 , G03H2001/026 , G03H2001/0268 , G03H2001/0413 , G03H2001/2231 , G03H2001/2289 , G03H2222/16 , G03H2250/32
摘要： A method of writing plane holographic gratings Bragg-matched for reflection in the infrared in a photorefractive material using shorter wavelength light through a face perpendicular to the grating planes. The writing beam wavelength is selected to be within the photorefractive sensitivity range of the crystal and the angles are chosen relative to the wavelength to define a reflection grating with a period such that counter-propagating reflection occurs at the desired IR wavelength. For reflection gratings at different wavelengths, either the transmission or the reflection mode geometry may be used. In the transmission mode, the writing beams are incident on the same side face while in the reflection made the writing is on opposite faces in an off-axis (non-counter-propagating) configuration. Anti-reflection coatings of the appropriate wavelengths are used on the crystal surfaces to reduce reflection losses and improve the diffraction efficiency of the grating.
摘要翻译：一种写入平面全息光栅的方法，使用较短波长的光通过垂直于光栅平面的面，在光折射材料中的红外中反射布拉格匹配。写入光束波长选择在晶体的光折射灵敏度范围内，并且相对于波长选择角度以限定具有使得在所需IR波长处发生反向传播反射的周期的反射光栅。对于不同波长的反射光栅，可以使用透射或反射模式几何形状。在透射模式中，写入光束入射在相同的侧面上，而在反射中使写入在离轴（非反向传播）结构中位于相对面上。在晶体表面上使用适当波长的抗反射涂层，以减少反射损耗并提高光栅的衍射效率。

20. 发明授权

US5335098A Fixing method for narrow bandwidth volume holograms in photorefractive materials 失效
$Fixing method for narrow bandwidth volume holograms in photorefractive materials$
标题翻译：光折射材料中窄带宽全息图的固定方法
公开(公告)号：US5335098A
公开(公告)日：1994-08-02
申请号：US965746
申请日：1992-10-23
申请人： Victor Leyva , George A. Rakuljic
发明人： Victor Leyva , George A. Rakuljic
IPC分类号： G02B5/18 , G02B5/20 , G02B5/32 , G02B6/02 , G02B6/34 , G03H1/02 , G03H1/04 , G03H1/26 , G03H1/28 , G06K9/76 , G11B7/0065 , G11C13/04 , H01S3/06 , H01S3/08 , H01S3/109 , H01S3/16 , G03H1/18
CPC分类号： G02B5/1857 , G02B5/203 , G02B5/32 , G02B6/12007 , G02B6/29308 , G02B6/2931 , G02B6/29311 , G02B6/4215 , G03H1/02 , G03H1/0248 , G03H1/28 , G06K9/76 , G11B7/0065 , G11C13/044 , H01S3/08009 , H01S3/109 , H01S3/16 , G02B6/2706 , G02B6/29314 , G02B6/29395 , G03H2001/026 , G03H2001/0268 , G03H2001/0439
摘要： An improved method for storing permanent holographic gratings in photorefractive materials for use in narrow band filters such as the H.sub.60 filter, as well as the filters themselves. The invention also provides an improved method of controlling the electric field and the nature of the photorefraction to minimize wavelength shifts and band broadening at a minimal reduction of diffraction efficiency.
摘要翻译：用于在诸如H60滤光器的窄带滤光器中使用的光折射材料中的永久全息光栅的改进方法以及滤光片本身。本发明还提供了一种改进的控制电场的方法和光折射的性质，以最小化衍射效率降低波长偏移和带宽。

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