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Title: Optical set-reset latch

Abstract

An optical set-reset (SR) latch is formed from a first electroabsorption modulator (EAM), a second EAM and a waveguide photodetector (PD) which are arranged in an optical and electrical feedback loop which controls the transmission of light through the first EAM to latch the first EAM in a light-transmissive state in response to a Set light input. A second waveguide PD controls the transmission of light through the second EAM and is used to switch the first EAM to a light-absorptive state in response to a Reset light input provided to the second waveguide PD. The optical SR latch, which may be formed on a III-V compound semiconductor substrate (e.g. an InP or a GaAs substrate) as a photonic integrated circuit (PIC), stores a bit of optical information and has an optical output for the logic state of that bit of information.

Inventors:
Issue Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1082655
Patent Number(s):
8363990
Application Number:
13/071,095
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Classifications (CPCs):
H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03K - PULSE TECHNIQUE
G - PHYSICS G02 - OPTICS G02F - DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011 Mar 24
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Skogen, Erik J. Optical set-reset latch. United States: N. p., 2013. Web.
Skogen, Erik J. Optical set-reset latch. United States.
Skogen, Erik J. Tue . "Optical set-reset latch". United States. https://www.osti.gov/servlets/purl/1082655.
@article{osti_1082655,
title = {Optical set-reset latch},
author = {Skogen, Erik J.},
abstractNote = {An optical set-reset (SR) latch is formed from a first electroabsorption modulator (EAM), a second EAM and a waveguide photodetector (PD) which are arranged in an optical and electrical feedback loop which controls the transmission of light through the first EAM to latch the first EAM in a light-transmissive state in response to a Set light input. A second waveguide PD controls the transmission of light through the second EAM and is used to switch the first EAM to a light-absorptive state in response to a Reset light input provided to the second waveguide PD. The optical SR latch, which may be formed on a III-V compound semiconductor substrate (e.g. an InP or a GaAs substrate) as a photonic integrated circuit (PIC), stores a bit of optical information and has an optical output for the logic state of that bit of information.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {1}
}

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Works referenced in this record:

500 Gbit∕s optical gate monolithically integrating photodiode and electroabsorption modulator
journal, January 2004


2.3 picoseconds optical gate monolithically integrating photodiode and electroabsorption modulator
journal, January 2001


Design and Demonstration of Novel QW Intermixing Scheme for the Integration of UTC-Type Photodiodes With QW-Based Components
journal, February 2006


Monolithically integrated active components: a quantum-well intermixing approach
journal, March 2005


100-gb/s error-free wavelength conversion with a monolithic optical gate integrating a photodiode and electroabsorption modulator
journal, November 2005