Betty
Ian Betty, Ottawa CA
Patent application number | Description | Published |
---|---|---|
20110142457 | INTEGRATED TRANSMIT AND RECEIVE MODULES FOR A COHERENT OPTICAL TRANSMISSION SYSTEM - An integrated optical package includes a package mount including a plurality of electrical connectors. A digital electronic integrated circuit (IC) is electrically connected to the electrical connectors of the package mount via a first set of solder balls or bumps. An optical IC includes optical waveguide traces and one or more electrical contact points for electrically coupling the optical IC to the digital electronic IC via a second set of solder balls or bumps. One or more optical fibre pig-tails optically coupled to the optical waveguide traces of the optical IC. | 06-16-2011 |
20110222850 | SELF TEST OF A DUAL POLARIZATION TRANSMITTER - A method of testing a dual-polarization optical transmitter comprising a pair of polarization transmitters for respectively generating first and second polarization signals, and a polarization combiner for generating an optical signal composed of the first and second polarization signals with respective orthogonal polarization vectors. Each of the polarization transmitters is controlled to transmit respective polarization optical signals having predetermined characteristics. An output of the dual-polarization optical transmitter is tapped to obtain a first tap signal representative of the first polarization signal, and a second tap signal representative of the second polarization signal. A relative angle between respective polarization vectors of the tap signals is controlled, and the first and second tap signals combined to generate a combined light. A power level of the combined light is detected, and processed to obtain information about the performance of the dual polarization transmitter. | 09-15-2011 |
20120321325 | PARALLEL CONVERSION BETWEEN OPTICAL AND DIGITAL - A coherent optical receiver Includes an electro-optic module coupled to an electronic signal processing Integrated circuit (IC) via a parallel analog transmission line bus. The electro-optic module receives and detects an optical channel light including a high-bandwidth signal modulated thereon. The electro-optic module includes: a single optical hybrid for mixing the optical channel light with a corresponding continuous wave local oscillator light to generate a mixed light containing the high-bandwidth data signal, at least one photodetector; and an analog frequency decimator for generating a set of parallel analog signals, each analog signal representing a respective portion of the high-bandwidth signal. The electronic signal processing IC includes a respective Analog-to-digital (A/D) converter for sampling each one of the set of parallel analog signals, and for generating corresponding parallel digital sample streams; and a digital signal processor (DSP) for processing the parallel digital sample streams to extract the high-bandwidth signal. | 12-20-2012 |
Ian B. Betty, Ottawa CA
Patent application number | Description | Published |
---|---|---|
20120194287 | RADIO FREQUENCY DRIVE LEVEL CONTROL SYSTEM AND METHOD FOR AN ELECTRO-OPTIC PHASE MODULATOR - The present disclosure provides Radio Frequency (RF) drive level control systems and methods for an Electro-Optic (EO) M-ary Phase-Shift Keying (M-PSK) phase modulator. Specifically, an M-PSK drive waveform is tightly controlled for maximum symmetry in the associated constellation. In an exemplary embodiment, the present disclosure includes an M-PSK transmitter, an M-PSK electro-optic phase modulator, and phase modulation method that each control RF drive level based upon a carrier suppression ratio defined as a measure of ratio of a modulated time-averaged E-field to the magnitude of the E-field. In an exemplary embodiment, the carrier suppression ratio is measured based on a modulation depth measurement. | 08-02-2012 |
20130128330 | FIBER OPTICAL PACKAGE INTERCONNECT - Optical devices and systems including a polarization maintaining interconnect are disclosed. An optical assembly can include an optical component, a low-birefringence optical fiber and a polarization transformer. The polarization transformer is coupled between the optical component and the optical fiber. The polarization transformer is configured to transform between a substantially circularly-polarized light at the low-birefringence optical fiber and a substantially linearly-polarized light at the optical component. | 05-23-2013 |
Ian Brian Betty, Ottawa CA
Patent application number | Description | Published |
---|---|---|
20120062900 | OPTICAL WAVEGUIDE SPLITTERS - An Mach-Zehnder interferometer ( | 03-15-2012 |
20120134623 | RIDGE WAVEGUIDE SERIAL INTERFEROMETERS - In a ridge waveguide serial interferometer mode conversion is induced by a first mode conversion section, a phase difference between modes is introduced by propagation over a length of waveguide and optical interference is produced following further mode conversion induced in a second mode conversion section. The first mode conversion section has a first radius of curvature, which is equal to a second radius of curvature of the second mode conversion section. The ridge waveguide interferometer advantageously provides an equal phase dependency as a function of temperature. | 05-31-2012 |
Norman Betty, San Diego, CA US
Patent application number | Description | Published |
---|---|---|
20140093552 | Multilayer Biodegradable Microparticles for Sustained Release of Therapeutic Agents - Microparticles are prepared by a method that includes: (a) forming a layer comprising a first polymer on a solid surface by depositing a first composition one or more times on the solid surface, wherein the first composition comprises the first polymer and a first solvent, and evaporating the first solvent in the first composition; (b) forming one or more layers comprising a second polymer and a therapeutic agent by depositing a second composition on all or part of the layer formed in step (a), wherein the second composition comprises the second polymer, the therapeutic agent, and a second solvent; and evaporating the second solvent in the second composition; and (c) forming an additional layer comprising a third polymer by depositing a third composition one or more times on a previously formed layer, wherein the third composition comprises the third polymer and a third solvent; and evaporating the third solvent in the third composition. | 04-03-2014 |