Agilent Technologies, Inc.

Cselt- Centro Studi E Laboratori Telecommunicazioni Spa

Avago Technologies Fiber IP Pte Ltd.

Marina Meliga

Roberto Paoletti

Luigi Tallone

Marco Scofet

Paul Marshall Charles

Alessandro Stano

Claudio Coriasso

Michele Agresti

Marco Vallone

A method of manufacturing a tuneable laser assembly including a substrate having formed thereon a plurality of tuneable lasers including Multi Quantum Well (MQW) active sections as well as distributed Bragg reflector (DBR) tuning sections. The lasers have respective emission wavelengths and tuning ranges such that the laser assembly can be tuned over a quasi-continuous predetermined wavelength range. The assembly also includes a plurality of passive waveguides coupled to the lasers to receive therefrom the respective emission wavelengths as well as an optical coupler coupled to the waveguides to receive via the waveguides the emissions wavelengths from the lasers. A Multi Quantum Well (MQW) amplifier coupled to the coupler amplifies the emission wavelengths coupled via the optical coupler. The method includes the steps of:

Wide tuneable laser sources

A laser module (,) comprises a Fabry-Perot cavity active element (,) with a facet (,) bearing an anti-reflection coating and an external cavity made by an optical fibre Bragg grating (,) with low reflectivity. This grating (,) presents a non-uniform profile of modulation of the refractive index, asymmetrical in the direction of the grating length, such as to give rise to a position of the equivalent mirror plane that is offset towards the end of the grating (,) that is closer to the active element (,).

Laser module with external cavity and optical fibre reflector

In a distributed feedback semiconductor laser, the active medium has a periodic thickness variation in the light propagation direction so as to generate a periodic gain variation, while maintaining the effective refractive index constant, and has a discrete multi-quantum wire structure.

Gain-coupled distributed-feedback semiconductor laser

Growing community of inventors

Turin, Italy

Marina Meliga