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1. 发明授权

US4955028A Wavelength tunable composite cavity laser 失效
标题翻译：波长可调谐复合腔激光器
公开(公告)号：US4955028A
公开(公告)日：1990-09-04
申请号：US173488
申请日：1988-03-25
申请人： Rodney C. Alferness , Gadi Eisenstein , Uziel Koren , Ping K. Tien , Rodney S. Tucker , Matthew S. Whalen
发明人： Rodney C. Alferness , Gadi Eisenstein , Uziel Koren , Ping K. Tien , Rodney S. Tucker , Matthew S. Whalen
IPC分类号： G02B6/34 , H01S3/08 , H01S3/1055 , H01S5/14
CPC分类号： G02B6/022 , G02B6/02061 , G02B6/02066 , G02B6/02195 , H01S3/08009 , H01S3/1055 , H01S5/141 , H01S5/146
摘要： Wavelength tunability and single frequency output are achieved in a coherent light source employing an adjustably controllable reflector. The light source includes a gain medium coupled to a single-mode fiber having a partially reduced cladding region at a predetermined distance from the gain medium. A Bragg reflector is either formed on the reduced cladding region of the single-mode fiber or formed on an external element in close proximity to the reduced cladding region. A single resonant optical cavity is formed by placing another reflector on the side of the gain medium opposite the gain medium-to-fiber coupling. Wavelength tuning of the light source is accomplished by controllably adjusting the period or the Bragg reflector element.
摘要翻译：波长可调性和单频输出在采用可调节可控反射器的相干光源中实现。光源包括耦合到单模光纤的增益介质，其具有距离增益介质预定距离的部分减小的包层区域。布拉格反射器或者形成在单模光纤的还原包层区域上，或者形成在紧邻还原包层区域的外部元件上。通过在增益介质的相对于增益介质到光纤耦合的一侧放置另一个反射器来形成单个谐振光学腔。通过可控地调节周期或布拉格反射器元件来实现光源的波长调谐。

2. 发明授权

US4991975A Division multiplexing and demultiplexing means lightwave communication system comprising optical time 失效
标题翻译：分路复用和解复用是指包括光时间的光波通信系统
公开(公告)号：US4991975A
公开(公告)日：1991-02-12
申请号：US275454
申请日：1988-11-22
申请人： Rodney C. Alferness , Gadi Eisenstein , Steven K. Korotky , Rodney S. Tucker
发明人： Rodney C. Alferness , Gadi Eisenstein , Steven K. Korotky , Rodney S. Tucker
IPC分类号： H04J14/08 , H04L7/033
CPC分类号： H04J14/08 , H04L7/0337
摘要： Disclosed is a time division multiplexed optical communication system that is capable of operation at relatively high bit rates and that is relatively stable and immune to crosstalk and noise. The system comprises receiver means wherein the timing signal for demultiplexing is derived from the fully multiplexed optical pulse stream by means that comprise a narrow band receiver and timing means that produce a lower-frequency timing signal from the output of the narrow band receiver. The timing signal is used to drive one or more optical switches. In one embodiment of the invention the receiver means have a binary-tree architecture and the timing signals are substantially sinusoidal. In another embodiment the receiver means have a linear-bus architecture and the timing signals are pulse-like.
摘要翻译：公开了一种时分复用光通信系统，其能够以相对高的比特率操作并且相对稳定并且不受串扰和噪声的影响。该系统包括接收机装置，其中用于解复用的定时信号通过包括窄带接收机和从窄带接收机的输出产生较低频定时信号的定时装置从全复用光脉冲流导出。定时信号用于驱动一个或多个光开关。在本发明的一个实施例中，接收机装置具有二进制树结构，并且定时信号基本上是正弦的。在另一个实施例中，接收器装置具有线性总线架构，并且定时信号是类似脉冲的。

3. 发明授权

US4667331A Composite cavity laser utilizing an intra-cavity electrooptic waveguide device 失效
公开(公告)号：US4667331A
公开(公告)日：1987-05-19
申请号：US572634
申请日：1984-01-20
申请人： Rodney C. Alferness , Gadi Eisenstein , Steven K. Korotky
发明人： Rodney C. Alferness , Gadi Eisenstein , Steven K. Korotky
IPC分类号： H01S3/106 , H01S3/098 , H01S3/107 , H01S3/11 , H01S3/115 , H01S5/14 , H01L3/10
CPC分类号： H01S3/1109 , H01S3/083 , H01S3/107 , H01S5/146 , H01S3/1127
摘要： Optical functions such as Q-switching, mode locking, cavity dumping, and modulation are generated by a simple laser arrangement which includes a gain medium and an electrically controllable, optical waveguide device optically coupled to the gain medium. The gain medium and waveguide device are either interposed between two reflective surfaces or coupled by a waveguide in order to form a single composite cavity laser structure. -

4. 发明授权

US4728168A Composite cavity laser utilizing an intra-cavity electrooptic waveguide device 失效
标题翻译：使用腔内电光波导器件的复合腔激光器
公开(公告)号：US4728168A
公开(公告)日：1988-03-01
申请号：US935028
申请日：1986-11-26
申请人： Rodney C. Alferness , Gadi Eisenstein , Steven K. Korotky
发明人： Rodney C. Alferness , Gadi Eisenstein , Steven K. Korotky
IPC分类号： G02F1/035 , G02F1/313 , H01S3/098 , H01S3/107 , H01S3/11 , H01S3/115 , H01S5/14 , H01S3/10
CPC分类号： H01S3/1109 , G02F1/035 , G02F1/3132 , H01S3/107 , H01S3/115 , H01S5/146 , H01S3/083 , H01S3/1127
摘要： Optical functions such as Q-switching, mode locking, cavity dumping, and modulation are generated by a simple laser arrangement which includes a gain medium and an electrically controllable, optical waveguide device optically coupled to the gain medium. The gain medium and waveguide device are either interposed between two reflective surfaces or coupled by a waveguide in order to form a single composite cavity laser structure.
摘要翻译：通过简单的激光装置产生诸如Q开关，模式锁定，腔体倾倒和调制之类的光学功能，其包括光学耦合到增益介质的增益介质和电可控的光波导器件。增益介质和波导器件被插入在两个反射表面之间或由波导耦合以形成单个复合腔激光器结构。

5. 发明授权

US4904045A Grating coupler with monolithically integrated quantum well index modulator 失效
标题翻译：具有单片集成量子阱索引调制器的光栅耦合器
公开(公告)号：US4904045A
公开(公告)日：1990-02-27
申请号：US173503
申请日：1988-03-25
申请人： Rodney C. Alferness , Thomas L. Koch , Uziel Koren , Jane E. Zucker
发明人： Rodney C. Alferness , Thomas L. Koch , Uziel Koren , Jane E. Zucker
IPC分类号： G02F1/015 , G02F1/017 , G02F1/313 , H01S5/00 , H01S5/0625 , H01S5/10 , H01S5/343 , H01S5/50
CPC分类号： B82Y20/00 , G02F1/01708 , G02F1/3133 , H01S5/1032 , H01S5/34313 , G02F2001/0151 , G02F2001/3135 , G02F2201/302 , G02F2202/101 , G02F2202/102 , G02F2203/055 , H01S5/06256 , H01S5/06258 , H01S5/1028 , H01S5/1035 , H01S5/34306 , H01S5/5045
摘要： A grating coupler is combined with a quantum well index modulator and an optical waveguide to alter the reverse or forward coupling characteristics between two different propagation modes of the system.

6. 发明授权

US5253314A Tunable optical waveguide coupler 失效
标题翻译：可调光波导耦合器
公开(公告)号：US5253314A
公开(公告)日：1993-10-12
申请号：US830092
申请日：1992-01-31
申请人： Rodney C. Alferness , Lawrence L. Buhl , Thomas L. Koch , Uziel Koren
发明人： Rodney C. Alferness , Lawrence L. Buhl , Thomas L. Koch , Uziel Koren
IPC分类号： H01L31/12 , G02B6/12 , G02B6/122 , G02F1/313 , H01S5/00 , H01S5/026 , H01S5/0625 , H01S5/10 , H01S5/34 , G02B6/26
CPC分类号： H01S5/06256 , G02B6/12004 , G02B6/12007 , G02F1/3133 , G02F2001/3135 , G02F2203/055 , H01S5/1032 , H01S5/1035 , H01S5/3428
摘要： Various optical functions are generated in accordance with the present invention of a novel broadly tunable monolithic wavelength selective coupler which can be integrated with a gain medium to form a broadly tunable laser. The tunable wavelength selective coupler supports a pair of asynchronous waveguides, an upper waveguide and a lower waveguide, in combination with a phase match course grating for coupling optical energy between said waveguides. One end of the lower waveguide terminates at an output facet. The corresponding end of the upper waveguide terminates in an optical signal absorbing medium. The other end of the lower waveguide is terminated to prevent optical energy from entering the waveguide; and, the corresponding end of the upper waveguide terminates at an input facet. The combination of a gain section and the monolithically tunable wavelength selective coupler forms a broadly tunable laser which is an important source of optical energy for a number of applications such as wavelength division multiplexed networks and switching systems. The laser frequency is determined by that wavelength .lambda.o which satisifies the forward coupling phase match condition, .lambda.g=.LAMBDA..vertline.N.sub.2 -N.sub.1 .vertline. of the coupler where .LAMBDA. is the coarse grating period and N.sub.1, N.sub.2 are the effective indices of the two waveguides. Wavelengths which are not coupled from the upper waveguide to the lower waveguide are attenuated in the optical signal absorbing means. Tuning of the laser wavelength is achieved by either injecting current into or applying a reverse bias voltage to the upper waveguide to decrease or increase its index respectively and change the coupled wavelength.

7. 发明授权

US4737007A Narrow-band wavelength selective optical coupler 失效
标题翻译：窄带波长选择光耦合器
公开(公告)号：US4737007A
公开(公告)日：1988-04-12
申请号：US832740
申请日：1986-02-24
申请人： Rodney C. Alferness , Matthew S. Whalen
发明人： Rodney C. Alferness , Matthew S. Whalen
IPC分类号： G02B6/293 , G02B6/34
CPC分类号： G02B6/29334
摘要： Narrow band, wavelength selective optical coupling is achieved in a device including first and second optical transmission media and a filter. The first and second optical transmission media are in substantially close proximity of each other in a predetermined interaction region to provide evanescent coupling therebetween. The filter is positioned on the first optical transmission medium in the predetermined region for causing the coupling to be wavelength selective and contradirectional from the first optical transmission means to the second optical transmission means. One exemplary embodiment of the coupler includes optical fibers as the transmission media and a Bragg reflection grating integrally formed on the first transmission medium as the filter. Other embodiments include the use of semiconductor waveguides as the optical transmission media.
摘要翻译：在包括第一和第二光传输介质和滤波器的装置中实现窄带，波长选择性光耦合。第一和第二光学传输介质在预定的相互作用区域中基本上彼此靠近，以在其间提供渐逝耦合。滤波器位于预定区域中的第一光传输介质上，用于使耦合波长选择并且从第一光传输装置到第二光传输装置是相反的。耦合器的一个示例性实施例包括作为传输介质的光纤和作为滤波器整体形成在第一传输介质上的布拉格反射光栅。其他实施例包括使用半导体波导作为光传输介质。

8. 发明授权

US5495543A Polarization-independent optical wavelength selective coupler 失效
标题翻译：偏振无关光波长选择耦合器
公开(公告)号：US5495543A
公开(公告)日：1996-02-27
申请号：US372253
申请日：1995-01-13
申请人： Rodney C. Alferness , Fred L. Heismann
发明人： Rodney C. Alferness , Fred L. Heismann
IPC分类号： G02B5/18 , G02B6/124 , G02B6/34 , G02B6/36
CPC分类号： G02B6/12007 , G02B6/124 , G02B6/29317 , G02B6/29397
摘要： A double-periodic grating is described for obtaining polarization-independent filtering and coupling. The grating may be viewed as a combination of two gratings with slightly different grating periods. The two periods are carefully chosen to match the difference in propagation constants of the TE and TM polarization modes such that both modes are coupled at the same wavelength.A novel method of obtaining a double-periodic grating is described.
摘要翻译：描述了用于获得偏振无关滤波和耦合的双周期光栅。光栅可以被视为具有稍微不同的光栅周期的两个光栅的组合。仔细选择两个周期以匹配TE和TM偏振模式的传播常数的差异，使得两种模式在相同波长下耦合。描述了一种获得双周期光栅的新方法。

9. 发明授权

US4750801A Optical waveguide resonator filters 失效
标题翻译：光波导谐振滤波器
公开(公告)号：US4750801A
公开(公告)日：1988-06-14
申请号：US782133
申请日：1985-09-30
申请人： Rodney C. Alferness
发明人： Rodney C. Alferness
IPC分类号： G02B6/122 , G02B6/12 , G02B6/124 , G02F1/225 , H01S5/0625 , H01S5/10 , H01S5/12 , G02B6/10
CPC分类号： H01S5/1028 , G02B6/124 , G02F1/225 , H01S5/1032 , G02B2006/12107 , G02B2006/12109 , H01S5/06256 , H01S5/06258 , H01S5/12 , H01S5/1228 , Y10S359/90
摘要： An optical filter using first and second grating sections separated by a changed refractive index section operates as a narrowband grating resonator.
摘要翻译：使用由改变的折射率部分分开的第一和第二光栅部分的光学滤波器用作窄带光栅谐振器。

10. 发明授权

US4390236A Tunable polarization independent wavelength filter 失效
标题翻译：可调谐偏振独立波长滤波器
公开(公告)号：US4390236A
公开(公告)日：1983-06-28
申请号：US245626
申请日：1981-03-19
申请人： Rodney C. Alferness
发明人： Rodney C. Alferness
IPC分类号： G02B6/14 , G02F1/01 , G02F1/03 , G02F1/035 , G02F1/05 , G02F1/313 , H01P1/213 , H04J14/02 , G02B5/174
CPC分类号： H04J14/02 , G02F1/0353 , G02F1/3132 , G02F2001/0142 , G02F2201/124 , G02F2203/055 , G02F2203/06
摘要： Tunable, polarization independent wavelength filtering is obtained in a circuit configuration comprising an input polarization selective coupler which separates the TM and TE mode waves. A first, wavelength selective mode converter, in the TE mode wavepath, converts the TE mode wave energy at the selected wavelength to the TM mode. Similarly, a second wavelength selective mode converter, located in the TM mode wavepath, converts the TM mode wave energy at the selected wavelength to the TE mode. An output polarization selective coupler combines the TE and TM mode wave energy at the selected wavelength in one output wavepath and combines the balance of the input signal in a second wavepath. By cascading a plurality of such circuits, each tuned to a different wavelength, a wavelength multiplexed signal can be demultiplexed.
摘要翻译：在包括分离TM和TE模式波的输入偏振选择耦合器的电路配置中获得可调谐的偏振独立波长滤波。在TE模式波导路径中的第一个波长选择模式转换器将所选波长的TE模式波能转换成TM模式。类似地，位于TM模式波导路径中的第二波长选择模式转换器将所选波长的TM模波能转换为TE模式。输出偏振选择耦合器在一个输出波形路径中将TE和TM模式波能量组合在所选波长处，并将输入信号的平衡组合在第二波形路径中。通过级联多个这样的电路，每个调谐到不同的波长，波分复用信号可以被解复用。

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