Embodiments herein describe a photonic chip which includes a coupling interface for
evanescently coupling the chip to a waveguide on an external substrate. In one …

State-of-the-art portable Raman spectrometers use discrete free-space optical components
that must be aligned well and that don't tolerate vibrations well. Conversely, the inventive …

Embodiments herein describe techniques for testing or aligning optical components in a
photonic chip using a grating coupler. In one embodiment, the photonic chip may include an …

A spectrometer includes an interferometer having a first interference arm and a second
interference arm to produce interference patterns from incident light. At least one of the …

A multi-channel optical imaging and stimulation system includes a light source to deliver
light beams into a light guide. Different light beams are coupled into different spatial modes …

A method of performing Raman spectroscopy can include guiding a Raman pump beam
with an optical fiber, where the Raman pump beam inducing fluorescence in the optical …

An apparatus for generating a spectral image includes a filter to receive incident light. The
filter has a variable refractive index. The apparatus also includes a modulator, operably …

Techniques for forming a facet optical coupler that includes a waveguide formed over a
trench of a silicon substrate are described. The trench is formed in a silicon substrate and …

A facet optical coupler, and techniques for forming a facet optical coupler, that includes a
waveguide disposed in a trench of a substrate are described. The substrate may be a silicon …

A spectrometer includes an interferometer having a first interference arm and a second
interference arm to produce interference patterns from incident light. At least one of the …