Accession Number:

ADA416235

Title:

Electrically Tunable Optical Delay Lines

Descriptive Note:

Final rept. 1 Oct 1999-30 Sep 2002

Corporate Author:

AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH SENSORS DIRECTORATE

Report Date:

2003-04-01

Pagination or Media Count:

40.0

Abstract:

In this report, we detail the methodology and results for design, fabrication, and characterization of electrically tunable optical delay lines. Our approach focuses on monolithic semiconductor multilayer heterostructures Distributed Bragg Reflector to produce true time delays for incident transmitted optical pulses. Quantum wells are grown in every other layer of the DBR stack. When a field is applied across the device, the well-known Quantum Confined Stark Effect causes both absorption and refractive index changes in these layers. Changing the field changes the effective optical path length, thereby providing electrically tunable true time delays. In-house design, growth, and processing were all accomplished by AFRL. Simple broadband transmission characteristics were also performed in-house, while true-time delay experiments were performed exclusively by collaborators from the University of Alabama at Huntsville.

Subject Categories:

  • Electrical and Electronic Equipment
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE