05799119 is referenced by 33 patents and cites 6 patents.

A Mach Zehnder (MZ) modulator with improved coupling of input and output fibers is provided. The MZ modulator combines the advantages of weakly guided input sections with strongly guided sections to optimize the coupling efficiency and selectivity of the device. Improved coupling between weakly and strongly guided sections of waveguide is provided by an intermediate tapered waveguide section which provides gradually changing mode confinement, which reduces the mode mismatch loss and therefore suppresses the reflection at the junction between the weakly and strongly guided sections of the waveguide.

Title
Coupling of strongly and weakly guiding waveguides for compact integrated mach zehnder modulators
Application Number
8/675757
Publication Number
5799119
Application Date
July 3, 1996
Publication Date
August 25, 1998
Inventor
Jun Yu
Stittsville
CA
Claude Rolland
Ottawa
CA
Agent
Angela C de Wilton
Assignee
Northern Telecom
CA
IPC
G02B 6/26
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