Silica based glass waveguide and optical module using the same
AssigneeHitachi Cable, Ltd.
InventorsHiroaki Okano, Seiichi Kashimura
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Abstract
A silica based glass waveguide having almost the same optical characteristics as designed value and an optical module using a silica based glass waveguide having excellent optical characteristics and reduced connecting loss are provided. A silica based glass waveguide is comprising a core waveguide and a clad, a core waveguide is formed rectangular in cross section and of SiO2-TiO2 group glass on a synthetic silica glass substrate, and a clad is formed of SiO2-B2O3-P2O5 group glass or etc. on a synthetic silica glass substrate and a core waveguide. A synthetic silica glass substrate is formed of pure SiO2 and having birefringence quantity less than 10 nm/cm.
Claims9
A silica based glass waveguide comprising a core waveguide formed on a silica glass substrate and a clad for covering said core waveguide and said silica glass substrate, wherein;
- said silica glass substrate is a synthetic silica glass substrate formed of pure SiO2 and having birefringence quantity less than 10 nm/cm.
An optical module comprising a silica based glass waveguide and an optical fiber connected to at least one end of a core waveguide of said silica based glass waveguide, said silica based glass waveguide comprising a core waveguide formed on a silica glass substrate and a clad for covering said core waveguide and said silica glass substrate, wherein;
- said silica glass substrate is a synthetic silica glass substrate formed of pure SiO2 and having birefringence quantity less than 10 nm/cm.
An optical multiplexer/dimultiplexer comprising a core waveguide formed on a silica glass substrate and a clad for covering said core waveguide and said silica glass substrate, wherein;
- said silica glass substrate is a synthetic silica glass substrate formed of pure SiO2and having birefringence quantity less than 10 nm/cm.
Dependencies are inferred from the claim text.