| Patent application number | Description | Published |
|---|
| 20080212913 | HIGH SPEED SEMICONDUCTOR OPTICAL MODULATOR - The present invention provides an optical waveguide modulator. In one embodiment, the optical waveguide modulator includes a semiconductor planar optical waveguide core and doped semiconductor connecting paths located adjacent opposite sides of the core and capable of applying a voltage across the core. The optical waveguide core and connecting paths form a structure having back-to-back PN semiconductor junctions. In another embodiment, the optical waveguide modulator includes a semiconductor optical waveguide core including a ridge portion wherein the ridge portion has at least one PN semiconductor junction located therein. The optical waveguide modulator also includes one or more doped semiconductor connecting paths located laterally adjacent the ridge portion and capable of applying a voltage to the ridge portion. | 09-04-2008 |
| 20080279505 | OPTICAL COUPLING STRUCTURE - The present invention provides an apparatus and method for operation therefore. The apparatus, in one embodiment, includes an optical coupling structure disposed within a cladding region, wherein the optical coupling structure includes a first guiding portion and a second guiding portion. In this embodiment the first guiding portion has a first end proximate a core of a planar waveguide, and a second end proximate the second guiding portion and having a first thickness. Moreover, in this embodiment the second guiding portion has a first end proximate the first guiding portion and a second end, the second end of the second guiding portion having a second thickness less than the first thickness. | 11-13-2008 |
| 20090003770 | VERTICAL OPTICAL COUPLING STRUCTURE - The present disclosure provides an apparatus, method of manufacturing an apparatus, and method for operation of the same. The apparatus, in one embodiment, includes an optical coupling structure disposed within a cladding region, wherein the optical coupling structure includes a first guiding portion and a second guiding portion. In this embodiment, the first guiding portion is located on a first plane and tapers from a first greater width to a first lesser width in a first direction. The second guiding portion, in turn, is located on a second different plane and tapers from a second greater width to a second lesser width in a second opposite direction. | 01-01-2009 |
| 20090092350 | RESONATOR-ASSISTED CONTROL OF RADIO-FREQUENCY RESPONSE IN AN OPTICAL MODULATOR - In one embodiment, an optical modulator has a Mach-Zehnder interferometer (MZI) and an optical resonator coupled, via a tunable optical coupler, to one of the MZI internal arms. The optical resonator induces in the MZI frequency-dependent optical losses characterized by a comb of spectral resonances. The coupling strength between the optical resonator and the MZI set by the optical coupler controls the magnitude of the loss due to the resonances, while one or more optical phase shifter located in the optical resonator controls the spectral position of the resonances. Either the optical coupler or the optical phase shifter, or both, can be tuned to adjust the modulator's radio-frequency response curve. | 04-09-2009 |
| 20090136238 | Security over an optical fiber link - An apparatus includes an optical transmitter having a first dynamically reconfigurable optical filter, an optical receiver having a second dynamically reconfigurable optical filter. The optical transmitter and optical receive are connected via an optical fiber transmission line. The optical filters are configured to function in a complementary manner. | 05-28-2009 |
| 20100119190 | MULTITHICKNESS LAYERED ELECTRONIC-PHOTONIC DEVICES - An apparatus comprising an electronic-photonic device. The device includes a planar substrate having a top layer on a middle layer, active electronic components and active photonic waveguide components. The active electronic components are located on first lateral regions of the top layer, and the active photonic waveguide components are located on second lateral regions of the top layer. The second-region thickness is greater than the first-region thickness. The top layer has a higher refractive index than the middle layer. | 05-13-2010 |
| 20100177373 | TUNABLE ZERO-CHIRP PULSE GENERATOR USING PLASMA DISPERSION PHASE MODULATOR - An optical pulse generator comprising a phase modulator, wherein the phase modulator is configured to phase modulate and intensity modulate a continuous wave (CW) light signal in accordance with a received electrical signal, and an all-pass filter, the all-pass filter being coupled to the phase modulator to generate a pulsed light signal by filtering the modulated light signal from the phase modulator. | 07-15-2010 |
| 20100290732 | COMPACT ELECTROOPTIC MODULATOR - An apparatus | 11-18-2010 |
