Cross-gain modulation and four-wave mixing with picosecond pulses in a  quantum-dash waveguide.
Published: 2004
Language: eng
Number of pages: 100
Description: The processes of cross-gain modulation and four-wave mixing are characterized in a quantum-dash ridge waveguide laser operating near 1590 nm. These processes are observed by means of a nondegenerate pump-probe experiment with 1.6-ps pulses. The probe transmission dynamics exhibit picosecond and nanosecond components. The pico-second component is identified as carrier heating, and its characteristic time is measured to be 2--3 ps. At transparency, the dynamics recover in 8 ps, potentially enabling 100-Gb/s wavelength conversion. A wavelength-insensitive 12-dB extinction ratio is obtained using a pump energy of 50 pJ. The wavelength up-conversion efficiency of four-wave mixing is found to vary from -17.6 to -21.8 dB for detuning from 1.8 to 3.8 THz. The efficiency is found to increase with injection current up to a point of saturation.
Notes: Advisers:  J. S. Aitchison; M. Mojahedi.

Thesis (M.A.Sc.)--University of Toronto, 2004.

Electronic version licensed for access by U. of T. users.

Source: Masters Abstracts International, Volume: 43-03, page: 0938.

MICR copy on microfiche (2 microfiches).