Accession Number:

ADA169029

Title:

Basic and Applied Research in the Field of Electronics and Communications.

Descriptive Note:

Final rept. 1 Nov 82-31 Oct 85,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE RESEARCH LAB OF ELECTRONICS

Personal Author(s):

Report Date:

1986-03-19

Pagination or Media Count:

32.0

Abstract:

During this period, considerable progress was made on experimental and theoretical designs for optical waveguide switches, multiplexors, and demultiplexors that can operate at a rate of 20 gigahertz, centered around the waveguide Mach-Zehnder interferometer. Extensive investigations into device applications of coupled waveguide structures have led to the ability to inject power into one of n input waveguide ports, and deliver power from any selected port using these techniques. Basic logic gates have been formed, building the interferometer in gallium arsenide, and simple exclusive OR gates have been demonstrated. Quantum noise in phase locked laser oscillators was studied, with the goal of using light that produces noise levels less than shot noise, and hence, is in a squeezed state. Oscillations in this mode have been successfully demonstrated. During this contract, a femtosecond laser facility was built which led to the achievement of optical pulses as short as 16 femtoseconds, with a center wavelength of approximately 625 nanometers, comprised of only eight optical cycles.

Subject Categories:

  • Electrical and Electronic Equipment
  • Optics
  • Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE