Accession Number:

ADA402850

Title:

All-optical Transistors for Ultrafast Computing

Descriptive Note:

Final rept. 1 Jun 1998-31 Jan 2001

Corporate Author:

CITY COLL NEW YORK DEPT OF ELECTRICAL ENGINEERING

Personal Author(s):

Report Date:

2001-09-09

Pagination or Media Count:

36.0

Abstract:

Information technology is aiming at higher speed, smaller dimensions, and better performance. Basic processes to produce all-optical transistors OT based on the novel polarization-controlled all-optical amplifier in non-birefringent single-mode optical fibers to modulate and amplify weak optical signals have been investigated. A weak signal passing into an OT will be amplified using an intense pump optical wave co-propagating in optical fibers. Using a non-birefringent single-mode optical fiber is better because the desired working optical power is much lower than that using a birefringent one because the natural birefringence in a birefringent fiber has to be canceled first by an intense optical wave. We have designed, assembled, and tested a single stage optical transistor based on the polarization controlled optical amplifier approach. Alternative nonlinear optical glasses and liquids with larger xexp 3 values than the reference CS2 gate at fast switching speed have been measured by four wave mixing, optical Kerr gate, and z-scan supported by other research grants. The optical nonlinearity and response time of several newly developed optical materials, such as a heavy element doped glass PbO-Bi2O3-Ga2O3, Tb3 doped fiber, a silica micro-structured fiber, and Cu doped ZnSe crystals have been studied.

Subject Categories:

  • Electrooptical and Optoelectronic Devices
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE