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Duane Alan Louderback

from Genoa, NV
Age ~54
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Also known as:
Duane A Louderback, Duane Lowderback
Related to:
Mark A Louderback, 47Kristopher Kime, 44Debra Webster, 63Rosalie KimeTravis Webster, 64
Connected to:
Andrew J Louderback, 68Claire C Louder, 59Clint Louderback, 47Darrell E Louder, 71Jamie N Louderback, 44Kristie M Louderbough, 42Lee R Louderback, 83Linda Louder, 76Matthew E Louder, 61Meagan C Louder, 44

Duane Louderback Phones & Addresses

  • Genoa, NV
  • Stateline, NV
  • Santa Barbara, CA
  • Lakewood, CO

Industries

Defense & Space

Resumes

Resumes

Duane Louderback Photo 1

Duane Louderback

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Location:
Zephyr Cove, Nevada
Industry:
Defense & Space

Publications

Us Patents

Broad Temperature Wdm Transmitters And Receivers For Coarse Wavelength Division Multiplexed (Cwdm) Fiber Communication Systems

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US Patent:
7412170, Aug 12, 2008
Filed:
May 24, 2004
Appl. No.:
10/852842
Inventors:
Duane A. Louderback - Zephyr Cove NV, US
Peter Guilfoyle - Zephyr Cove NV, US
Assignee:
Opticomp Corporation - Zephyr Cove NV
International Classification:
H04J 14/02
H04B 10/00
H04B 10/06
US Classification:
398 79, 398158, 398164, 398202
Abstract:
A wavelength division multiplexing (WDM) module for transmitting and/or receiving multiple signals simultaneously includes an array of vertical cavity surface emitting lasers (VCSELs) and/or photodetectors, respectively. In the transmitter case, different VCSELs are operated at different wavelengths that change depending on a value of a condition such as temperature and/or one or more other parameters. Multiple VCSELs are assigned to each channel of the WDM. The currently active VCSEL is switched to a different VCSEL assigned to a same channel and preferably having an operating wavelength that is closer to the signal wavelength at the current measured or estimated temperature and/or other parameter value. Multiple photodetectors are assigned to each channel of the WDM, and currently active detector is switched to the second detector within the same channel. A tuning layer and a resonant waveguide grating coupler are preferably integrated into the resonant structure of the VCSEL array and wavelength specific detector array.

Polarization Control Using Diffraction Gratings In Vcsel Waveguide Grating Couplers

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US Patent:
7627018, Dec 1, 2009
Filed:
Dec 26, 2007
Appl. No.:
12/005193
Inventors:
Peter Guilfoyle - Zephyr Cove NV, US
Duane Louderback - Zephyr Cove NV, US
Ketan Petal - Stateline NV, US
Sven Mahnkopf - Dayton NV, US
Assignee:
Opticomp Corporation - Zephyr Cove NV
International Classification:
H01S 3/08
US Classification:
372102, 372107
Abstract:
A VCSEL waveguide grating coupler is provided such that a first and second mirror are positioned to define a resonant cavity between them. The waveguide grating coupler further includes a waveguide having a first grating formed as a part of the waveguide to couple light of a first polarization mode into the waveguide. A second grating is formed on the waveguide grating coupler and is orthogonal to the first grating. The second grating is operative to enhance the light coupled to the waveguide by creating a loss difference between light of the first polarization mode and light of a second polarization mode, so that light of the first polarization mode lases preferentially within the VCSEL.

Method For Semiconductor Compositional Grading To Realize Low-Resistance, Distributed Bragg Reflectors

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US Patent:
7767480, Aug 3, 2010
Filed:
Feb 22, 2005
Appl. No.:
11/063230
Inventors:
Gregory Pickrell - Carson City NV, US
Duane A. Louderback - Zephyr Cove NV, US
Peter Guilfoyle - Zephyr Cove NV, US
Assignee:
Opticomp Corporation - Zephyr Cove NV
International Classification:
H01L 21/00
US Classification:
438 37, 438 29, 257E33072, 257E33069, 257E51021
Abstract:
A method of manufacturing a distributed Bragg reflector (DBR) in group III-V semiconductor compounds with improved optical and electrical characteristics is provided. A selected DBR structure is achieved by sequential exposure of a substrate to predetermined combinations of the elemental sources to produce a pair of DBR layers of compound alloys and a graded region including one or more discrete additional layers between the DBR layers of intermediate alloy composition. Exposure durations and combinations of the elemental sources in each exposure are predetermined by DBR design characteristics.

Wavelength Division Multiplexing Device

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US Patent:
20130064507, Mar 14, 2013
Filed:
Sep 9, 2011
Appl. No.:
13/229500
Inventors:
Sven MAHNKOPF - Horsham PA, US
Duane LOUDERBACK - Stateline NV, US
Mitchell HARRIS - Verdl NV, US
International Classification:
G02B 6/26
B23P 11/00
US Classification:
385 52, 29428
Abstract:
A technology for wavelength division multiplexing light of a plurality of different wavelengths into one or more optical fibers is disclosed. In a first main embodiment, the light is multiplexed and turned by a designated angle using two lens arrays and a flat surface that functions as a mirror. In a second embodiment, a waveguide-based combiner structure multiplexes and turns a plurality of light beams of different wavelengths.

Active Optical Cable For Wearable Device Display

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US Patent:
20180017742, Jan 18, 2018
Filed:
Sep 15, 2017
Appl. No.:
15/706032
Inventors:
- Pleasanton CA, US
Duane Louderback - Zephyr Cove NV, US
International Classification:
G02B 6/42
G02B 6/44
H04B 10/40
Abstract:
An active optical cable (AOC) for a helmet mounted display (HMD) or goggles includes a transceiver module having a rigid-flex or flex connector packaging to physically couple with an electrical data interface of the HMD or goggles. The transceiver module includes one or more media converters to receive electrical data of multiple formats from the HMD or googles and convert the received electrical data to a common format, and an optical engine communicatively coupled to the one or more media converters to output the converted electrical data as optical data. The AOC includes a cable assembly including at least fiber optic cables with one end of the cable assembly communicatively couple to the transceiver module to receive the optical data output from optical engine; and another transceiver module having a quick-release connector packaging and communicatively coupled to other end of the cable assembly to receive the optical data.

Method And Apparatus For Active Voltage Regulation In Optical Modules

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US Patent:
20160134081, May 12, 2016
Filed:
Nov 13, 2015
Appl. No.:
14/940579
Inventors:
- Zephyr Cove NV, US
Duane Louderback - Zephyr Cove NV, US
International Classification:
H01S 5/068
H01S 5/042
H05B 33/08
Abstract:
A method and apparatus for active voltage regulation in optical modules utilize a voltage regulator to change the supply voltage provided to laser diode driver and receiver electronics to optimize module performance over temperature. The ambient temperature of the module is monitored. The outputs of the voltage regulator are controlled to provide voltages that are optimized with respect to temperature for the integrated circuits in the optical module. This control is implemented via a temperature sensitive feedback or a control input from a microcontroller with a temperature monitor input. The supply voltage is optimized to minimize the voltage required to achieve acceptable performance at a given temperature. Minimizing the supply voltage lengthens the lifetime of the integrated circuit and the optical module. The voltage regulator provides higher than standard supply voltages to a laser diode driver to compensate for higher laser voltage at low temperatures.

Optical Bench Apparatus Having Integrated Monitor Photodetectors And Method For Monitoring Optical Power Using Same

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US Patent:
20160041352, Feb 11, 2016
Filed:
Oct 26, 2015
Appl. No.:
14/923197
Inventors:
- Zephyr Cove NV, US
Duane Louderback - Zephyr Cove NV, US
International Classification:
G02B 6/42
H04B 10/079
H04B 10/50
G01J 1/42
Abstract:
Optical bench structure provides a platform for integrating optical transmitters, particularly Vertical-Cavity Surface-Emitting Lasers (VCSELs), with monitor photodetectors. A substrate with photodetectors on the front side is aligned with flip-chip bonding bumps so the emission of the transmitters is aligned with the monitor photodetectors and passes through the monitor photodetectors with a portion of the transmitted light absorbed by the monitor photodetectors. The photodetectors have a thin absorption region so the percentage of light absorbed may be relatively small, providing sufficient photocurrent to monitor the transmitted power having a minimal effect on the transmitted power. Microlenses are integrated on the backside of the substrate focus, steer and/or collimate the emitted optical beams from the transmitters. The structure enables photodetectors to be integrated on the optical bench allowing the received optical power to be monitored. The receiver photodetectors are integrated on the optical bench alone and/or in combination with the transmitters.

Method, System And Apparatus For Hybrid Optical And Electrical Pumping Of Semiconductor Lasers And Leds For Improved Reliability At High Temperatures

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US Patent:
20150333477, Nov 19, 2015
Filed:
Dec 19, 2013
Appl. No.:
14/135108
Inventors:
- Zephyr Cove NV, US
Duane Louderback - Zephyr Cove NV, US
International Classification:
H01S 5/04
H01S 5/183
H04B 10/50
H01S 5/042
Abstract:
A method, system and an apparatus for hybrid optical and electrical pumping of semiconductor lasers and light-emitting diodes (LEDs) improves reliability at high operating temperatures. The semiconductor laser or LED is biased via optical pumping and a relatively small electrical modulation current modulates the laser. At low modulation speeds, the modulation current is substantially lower than that required for biasing the laser or directly modulating it at high speeds. The lifetime of the laser is improved by substantially reducing the operating current, enabling laser lifetimes adequate for operation in many applications, such as deep-hole oil drilling and jet engine control, where operation is not currently possible.
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Duane Alan Louderback from Genoa, NV, age ~54 Get Report