Patent ID: 7489042
Filing Date: 2009-02-10
Classification: H01L,H01S

Abstract:
1. A stem for an optical element, comprising: a substrate having a first and second principal surfaces that are opposite each other, a through hole extending through the first and second principal surfaces, and a base-like portion, located on a first portion of the first principal surface, and projecting outward from the first principal surface; a lead electrode inserted through the through hole of the substrate, fixed within the through hole and sealed to the substrate with an insulator, the lead electrode projecting from the first principal surface and the second principal surface of the substrate; a stand located on a surface of the base-like portion of the substrate, the stand having a first side face facing a side face of the lead electrode, the first side face being close to the side face of the lead electrode and projecting outward and overhanging a side face of the base-like portion; and a high-frequency line substrate located on the first side face of the stand, the high-frequency line substrate including a dielectric substrate and a metal film signal line on a surface of the dielectric substrate, wherein