Biophotonic sensors on a silicon chip for Raman spectroscopy and optical coherence tomography

We review our recent results on integrating biomedical optical systems onto a silicon chip. Light collection by integrated waveguides has been investigated. Confocal light delivery and collection by a combination of two arrayed-waveguide gratings has been achieved. Using an arrayed-waveguide grating as an integrated spectrometer, Raman spectroscopy and spectral-domain optical coherence tomography have been demonstrated.