Patent ID: 6522822
Filing Date: 2003-02-18
Classification: G02B

Abstract:
A polarization-independent single-mode ridge waveguide comprising:a lower cladding layer having a thickness; an upper cladding layer having a thickness; and a guiding layer having a thickness and being disposed between said lower cladding layer and said upper cladding layer; a ridge having a ridge width being defined longitudinally along said waveguide by said upper cladding layer and a part of said guiding layer, said ridge width ranging from approximately 1.0 &mgr;m to approximately 1.5 &mgr;m; an etching depth being defined by said ridge, said etching depth ranging from approximately 1.7 &mgr;m to approximately 2.4 &mgr;m; a bend radius being defined along at least a part of a longitudinal length of said waveguide, said bend radius ranging from approximately 0 &mgr;m to approximately 100 &mgr;m.