Institut National D'optique

Ciena Corporation

Carl Paquet

Simon Thibault

Chris W Barnard

Denis Zaccarin

Jocelyn Lauzon

Alain Chandonnet

Chiara Meneghini

Saurin Shah

Mike Sieben

Sylvain Derome

A method for optimizing an optical transmitter is provided. According to one exemplary method, the optical transmitter is optimized by varying three transmitter parameters including the bias voltage, the crossing level and the peak-to-peak voltage. Once the respective optimal levels for the bias voltage, the crossing level and the peak-to-peak voltage are obtained, the optical transmitter is further checked to ensure that the optical transmitter is able to function properly within certain predetermined system parameters. The optical transmitter is also checked under two limiting scenarios to ensure that the optical transmitter is optimized against two predetermined lengths of optical fiber.

Method and system for optimizing a laser system

A linear spectrometer for spectrally measuring an optical signal. The spectrometer has an input receiving the signal which is then diffracted onto a diffraction grating. The signal is therefore divided into its spectral components, each component being diffracted at an angle &thgr;. A correcting element, such as a lens, a group of lenses, a mirror, etc. is provided for focusing the spectral components on an image plane where they are detected. The correcting element is designed so that the resulting distribution of the spectral components on the image plane is linear with respect to the component's wavelength.

Linear spectrometer

The present invention concerns a method for fabricating a patterned, poled dielectric structure, comprising the steps of providing a material, patterning a periodic pattern into a first surface, applying an electrode to the first surface, and applying a voltage to the electrode to create a domain inversion in the material. Preferably, the material is a ferroelectric material, and the electrode is a single, planar, solid electrode. The method proposed herein is simple, reproducible and economical, as compared to prior methods. Patterned, poled dielectric structures are used to generate optical frequency conversion, by creating quasi-phase matching between two optical signals.

Method for the fabrication of patterned poled dielectric structures and devices

The present invention concerns a linear wavelength DWDM that is compact and is adapted for use with fibre ribbons and which compensates for the non-linear relationship between equally spectrally spaced wavelengths and physically spaced wavelengths once they have been diffracted. The device includes a first and second port in an optically transmissive medium. The ports are in optical communication with each other through a first and second mirror and a diffraction grating. Preferably, the first mirror is located opposite the first port, and is off-axis with respect to the optical axis. The diffraction grating is located on the same side as the input port, and is in optical communication with the first mirror. The second mirror is located on the same side as the first mirror and is in optical communication with the diffraction grating. The output port is slightly off-axis with respect to the optical axis of the second mirror and is in optical communication therewith. The device compensates for the non-linear relationship between equally spectrally spaced wavelengths and physically spaced wavelengths once they have been diffracted.

Linear wavelength DWDM

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Carl Paquet