Ultra-Wide-Band Adiabatic Coupler As a Building Block for 2×32 PLC Splitter

We demonstrate adiabatic wavelength insensitive 2×2 PLC coupler with less than 0.6 dB variation over 1260- 1630 nm range and better than 0.25 dB PDL. We use it to build process tolerant 2×32 splitter having excellent optical performance.