Avanex Corporation

Corning Incorporated

Marco De Donno

Paolo Milanese

Aurelio Pianciola

Claudio Bosisio

Giovanni DelRosso

Danilo Scarano

Optical pumping unit comprising a first pump source adapted to emit a first pump radiation at wavelength &#x3bb;pa second pump source adapted to emit a second pump radiation at wavelength &#x3bb;pwith wavelength &#x3bb;pdifferent from wavelength &#x3bb;pand a common coupling section comprising a first and a second port connected to the first and second pump source for respectively receiving the first and the second pump radiation; a third port for a signal radiation at wavelength &#x3bb;s; a fourth port, wherein the coupling section is adapted to combine, in the fourth port, the signal radiation and the first and second pump radiation through a reversal of the direction of propagation of the first pump radiation from the first port to the fourth port.

Pumping method and unit for optical amplifiers

An optical device is described comprising at least one fiber-optic component arrange inside said device and a particular polymer composition capable of holding said optical component(s) in a predetermined position and protecting them inside said device. The polymer composition is a silicone elastomer obtained by crosslinking a mixture comprising at least one polysiloxane containing two or more hydrogen-siloxane functional groups of formula >SiH&mdash;O&mdash;, and at least one polysiloxane containing at least two vinyl groups of formula &mdash;CH&boxH;H , where said polysiloxane are reacted in an amount such that the molar ratio between the hydrogen-siloxane groups and the vinyl groups is less than or equal to 1:1. The polymer composition has extremely low emission of hydrogen, less than 1 cm per kg of composition.

Method of fixing a fiber optic component in an optical device the optical device so obtained and the polymer composition used therein

Optical pumping unit comprising a first pump source adapted to emit a first pump radiation at wavelength &lgr;p a second pump source adapted to emit a second pump radiation at wavelength &lgr;p with wavelength &lgr;p different from wavelength &lgr;p and a common coupling section comprising a first and a second port connected to the first and second pump source for respectively receiving the first and the second pump radiation; a third port for a signal radiation at wavelength &lgr;s; a fourth port, wherein the coupling section is adapted to combine, in the fourth port, the signal radiation and the first and second pump radiation through a reversal of the direction of propagation of the first pump radiation from the first port to the fourth port.

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Pavia, Italy

Marco De Donno