公开(公告)号：WO2015030891A3

公开(公告)日：2015-07-16

申请号：PCT/US2014040655

申请日：2014-06-03

Applicant: MASSACHUSETTS INST TECHNOLOGY ,  HOLLIS MARK A ,  SWINT REUEL B ,  SIRIANI DOMINIC ,  DONNELLY JOSEPH P ,  JUODAWLKIS PAUL WILLIAM

Inventor： HOLLIS MARK A ,  SWINT REUEL B ,  SIRIANI DOMINIC ,  DONNELLY JOSEPH P ,  JUODAWLKIS PAUL WILLIAM

IPC: G02F1/035

CPC classification number: G02F1/2255 ,  G02B6/14 ,  G02B2006/12097 ,  G02F1/01708 ,  G02F1/01716 ,  G02F1/2257 ,  G02F2001/212 ,  G02F2201/12

Abstract: An electro-optic modulator imparts the information contained in an electrical signal traveling along a transmission line onto an optical carrier by using signal-related variations in the electrical signal's voltage to modulate the refractive index or absorption in an electro-optic material through which the optical carrier propagates. For optimal bandwidth and modulation efficiency, the microwave and optical waves should be matched in velocity. However, conventional microwave transmission lines have a microwave velocity that is somewhat higher than the optical group velocity in typical optical waveguides. Tuning a microwave transmission line's capacitance reduces the microwave velocity, but also reduces the impedance below the 50 Ω impedance of most microwave components. Conversely, tuning the microwave transmission line's inductance makes it possible to match the microwave velocity to the optical group velocity over bandwidths of 100 GHz or greater while maintaining a microwave impedance of 50 Ω.

Abstract translation: 电光调制器通过使用电信号电压中的信号相关变化将包含在沿着传输线行进的电信号中的信息传递到光载体上，以调制电光材料中的折射率或吸收，通过光电材料 载波传播。 为了获得最佳的带宽和调制效率，微波和光波的速度应该匹配。 然而，传统的微波传输线的微波速度略高于典型光波导中的光群速度。 调谐微波传输线的电容降低了微波速度，同时也降低了阻抗大多数微波元件50Ω阻抗的阻抗。 相反，调谐微波传输线的电感可以使微波速度与100 GHz或更大带宽上的光学组速度相匹配，同时保持微波阻抗为50Ω。

公开(公告)号：WO0223257A3

公开(公告)日：2002-06-13

申请号：PCT/US0128785

申请日：2001-09-14

Applicant: MASSACHUSETTS INST TECHNOLOGY

Inventor： BETTS GARY E ,  DONNELLY JOSEPH P ,  TAYLOR PATRICK J

IPC: G02F1/225

CPC classification number: G02F1/2257 ,  G02F2201/126

Abstract: An electro-optic push-pull modulator requiring reduced high switching voltages through combinations of device structure and operation, causing linear and quadratic electro-optic effects to add. Such combinations of device structure and operation include combinations of crystal axis orientation, waveguide structure, electrode structure, electric field biasing, operating wavelengths, and optical polarizations. By inducing linear and quadratic electro-optic effects to add, significant refractive index changes can be realized with lower switching voltages, V pi . Furthermore, significant reduction in switching voltage for push-pull modulators can also be realized through combinations of device structure and operation effectively inducing solely the quadratic electro-optic effect.

Abstract translation: 电光推挽调制器需要通过器件结构和操作的组合来降低高开关电压，从而导致线性和二次电光效应的增加。 器件结构和操作的这种组合包括晶轴取向，波导结构，电极结构，电场偏置，工作波长和光学偏振的组合。 通过诱导线性和二次电光效应进行相加，可以用较低的开关电压V pi实现显着的折射率变化。 此外，还可以通过器件结构和有效地仅引起二次电光效应的操作的组合来实现推挽调制器的开关电压的显着降低。

公开(公告)号：WO2011068662A2

公开(公告)日：2011-06-09

申请号：PCT/US2010056662

申请日：2010-11-15

Applicant: MASSACHUSETTS INST TECHNOLOGY ,  HUANG ROBIN K ,  DONNELLY JOSEPH P ,  SWINT REUEL B

Inventor： HUANG ROBIN K ,  DONNELLY JOSEPH P ,  SWINT REUEL B

IPC: H01S5/10 ,  H01S3/08

CPC classification number: H01S5/2031 ,  G02B2006/12078 ,  G02B2006/12097 ,  H01S5/2213 ,  H01S5/2214

Abstract: A slab-coupled optical waveguide laser (SCOWL) is provided that includes an upper and lower waveguide region for guiding a laser mode. The upper waveguide region is positioned in the interior regions of the SCOWL. The lower waveguide region also guides the laser mode. The lower waveguide region is positioned in an area underneath the upper waveguide region. An active region is positioned between the upper waveguide region and the lower waveguide region. The active region is arranged so etching into the SCOWL is permitted to define one or more ridge structures leaving the active region unetched.

Abstract translation: 提供平板耦合的光波导激光器（SCOWL），其包括用于引导激光模式的上部和下部波导区域。 上波导区位于SCOWL的内部区域。 下波导区域也引导激光模式。 下波导区域位于上波导区域下方的区域中。 有源区位于上波导区和下波导区之间。 有源区的排列使得刻蚀进入SCOWL允许限定一个或多个脊结构，使有源区未腐蚀。

公开(公告)号：WO0206866A3

公开(公告)日：2003-07-10

申请号：PCT/US0121750

申请日：2001-07-11

Applicant: MASSACHUSETTS INST TECHNOLOGY

Inventor： WALPOLE JAMES N ,  DONNELLY JOSEPH P ,  CHINN STEPHEN R

IPC: H01S5/20 ,  H01S5/22 ,  H01S5/223 ,  H01S5/227 ,  H01S5/50

CPC classification number: H01S5/223 ,  H01S5/0655 ,  H01S5/20 ,  H01S5/2004 ,  H01S5/204 ,  H01S5/2218 ,  H01S5/2222 ,  H01S5/2232 ,  H01S5/2234 ,  H01S5/227 ,  H01S5/2275 ,  H01S5/50 ,  H01S2301/18

Abstract: A laser and optical amplifier waveguide device with a plurality of layers that supports a single lowest-order optical mode with gain while higher order nodes radiate and have a net loss. The supported lowest-order mode which has gain, has a mode cross section which is large compared to the operating optical wavelength in both the transverse and lateral directions. The contours of constant optical intensity of such lowest-order can be nearly circular, having an approximately elliptical shape with a small aspect ratio.

Abstract translation: 一种具有多个层的激光和光放大器波导器件，其支持具有增益的单个最低阶光学模式，而较高阶节点辐射并具有净损耗。 具有增益的支持的最低阶模式具有与在横向和横向上的操作光学波长相比大的模式横截面。 这种最低阶的恒定光强度的轮廓可以是近似圆形的，具有具有小纵横比的近似椭圆形状。