The present disclosure relates to an optical module. In an embodiment, the optical module includes a carrier, a light source, a light detector, and a first polarizer. The light source and the light detector are disposed adjacent to a first surface of the carrier. The first polarizer is disposed on the light detector. The optical module is configured to polarize light emitted from the light source into a first polarization direction substantially perpendicular to a second polarization direction of light permitted through the first polarizer.