Ultracompact, all-passive optical 90 degrees -hybrid on InP using self-imaging

A miniature (300- mu m*1750- mu m), all-passive 90 degrees -hybrid in GaInAsP/InP multimode waveguide is realized using self-imaging. Excellent performance (splitting ratio of 97:99:104: 99, low on-chip insertion losses <or=1 dB, only +or-3 degrees deviation from phase quadrature) and polarization-insensitive behavior at lambda /sub 0/=1.523 mu m was… CONTINUE READING