Composite module for optical fiber amplifier

H - Electricity – 01 – S

Patent

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Details

H01S 3/10 (2006.01) G02B 6/42 (2006.01) H01S 3/067 (2006.01) H01S 3/042 (2006.01) H01S 5/022 (2006.01)

Patent

CA 2250903

A composite module for an optical fiber amplifier which is capable of efficiently radiating heat generated at a Peltier element to outside of the module, in which an interference film filter component and a board are fixed to each other rigidly for a long period of time, and in which lateral offset of an optical axis between an LD element and the interference film filter component is further reduced. A portion of a board (1) where a Peltier element (12) is fixed in a high thermal conductive portion made of Cu or a Cu-W alloy. At least a part of a base (11) is a low thermal conductive portion made of a Fe-Ni-Co alloy, a Fe-Ni alloy, a Fe-Ni-Cr alloy, a Fe-Cr alloy, or stainless steel. An interference film filter component (5) is fixed to the low thermal conductive portion of the base (11) by laser beam welding.

L'invention concerne un module composite pour amplificateur à fibres optiques, permettant d'irradier efficacement la chaleur produite au niveau d'un élément Peltier vers l'extérieur du module, dans lequel un constituant filtrant pelliculaire antiparasite et une plaquette sont fixés l'un à l'autre rigidement pour une longue durée, et dans lequel le décalage latéral d'un axe optique entre un élément LD et le constituant filtrant pelliculaire antiparasite est réduit davantage. Une portion d'une plaquette (1), où est fixé un élément Peltier (12), est une portion fortement thermoconductrice constituée de Cu ou d'un alliage Cu-W. Au moins une partie d'une base (11) est une portion faiblement thermoconductrice constituée d'un alliage Fe-Ni-Co, d'un alliage Fe-Ni, d'un alliage Fe-Ni-Cr, d'un alliage Fe-Cr, ou bien d'un acier inoxydable. Un constituant filtrant pelliculaire antiparasite (5) est fixé sur la portion faiblement thermoconductrice de la base (11) par soudage au laser.

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