Description  Claims  Drawing  Cited references 

US2003202743A1   [0006] 
US5453836A   [0006] 

IEEE Photonics Technology Letters   [0006] 
Journal Of Lightwave Technology   [0006] 
MACH-ZEHNDER INTERFEROMETER TYPE OPTICAL WAVEGUIDE COUPLER WITH WAVELENGTH-FLATTENED COUPLING RATIO   [0006] 
Silica-based waveguide-type wavelength-insensitive couplers (WINC's) with series-tapered coupling structure   [0016] 
Widely wavelength tunable hybrid III-V/silicon laser with 45 nm tuning range fabricated using a wafer bonding technique   [0033]