A 2/3-octave-spanning three spectral band splitter on a Si 3 N 4 photonic integrated circuit platform

We demonstrate a three spectral band splitter that separates the wavelength bands of 1292nm, 1550nm and 1937nm. The device is fabricated using silicon nitride photonic integrated circuit platform. Optical characterization shows <3 dB loss for the three channels, and 11 ∼ 30 dB inter-channel crosstalk.