Auckland Uniservices Limited

Other

John Harvey

David Mechin

Claude Aguergaray

Vladimir Kruglov

John Dudley

Neil Broderick

Liam Barry

A laser apparatus for producing mode locked pulses includes a closed optical system adapted to connect to a fiber grain medium to form a laser cavity. The fiber gain medium is adapted to receive pulses characterized by a first state and to output pulses characterized by a second state. The closed optical system is adapted to receive the pulses in the second state and output pulses in a state similar to the first state.

Laser device

A parametric process is provided for producing visible light at a second wavelength including pumping an optical fiber () with input light () at a first wavelength of less than one micron, which is longer than the second wavelength, and wherein the optical fiber () has zero group velocity dispersion at a third wavelength in the visible or near infrared region and longer than the first wavelength. An optical amplifier that uses the parametric process for producing light at second wavelength is also provided. The optical fiber () may be a photonic crystal fiber. The parametric process is tuneable by adjusting the frequency of the zero group velocity dispersion, the frequency of the first wavelength or the birefringence of the optical fiber ().

Tuneable optical amplifier or optical parametric oscillator

A demultiplexer and method for a high speed time division multiplex optical communication system uses an opto-electronic device in which two photon absorption can occur configured in circuit. The received optical multi-channel signal and a control optical signal at the repetition rate of and synchronized to the selected channel to be detected are applied to the device, which is configured in circuit as to generate by non-linear two photon absorption effect a current similar to the original signal.

System and method for demultiplexing in optical communication systems

Growing community of inventors

Auckland, New Zealand

John Harvey