A system for optical detection may include a focal plane array. The system may further include one or more lenses configured to focus a collimated light beam received at the one or more lenses onto the focal plane array, where a position of the collimated light beam on the focal plane array is based on an incident angle of propagation of the collimated light beam at the one or more lenses. The system may also include a micro-channel plate collimator positioned within an optical path of the collimated light beam. The system may include a processor configured to determine the incident angle of propagation of the collimated light beam and to retrieve data encoded within the collimated light beam.