Structure for shielding stray light in optical waveguide module
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United States of America Patent
Stats
-
Apr 8, 2003
Grant Date -
Oct 25, 2001
app pub date -
Apr 24, 2001
filing date -
Apr 25, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A structure for shielding a stray light in an optical waveguide module is composed of an optical waveguide substrate supported in an optical waveguide module package, an optical waveguide formed on the optical waveguide substrate, a LD mounted on the optical waveguide substrate, an optical fiber-placement section formed on the optical waveguide substrate, an optical fiber situated on the optical fiber-placement section, a WDM filter formed on the optical waveguide substrate, a PD-mounting carrier situated behind the WDM filter, a PD mounted on the PD-mounting carrier, a metallic layer evaporated on the WDM filter, and a pin hole formed on the metallic layer at nearly a center thereof.
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