Systems and methods for IQ detection

A method of combining multiple functions of a light detection and ranging (LIDAR) system, the method comprising:

• receiving, by one or more optical components that are disposed on a semiconductor substrate, an optical beam generated by a laser source, wherein the optical beam is associated with a local oscillator (LO) signal;
• splitting, by the one or more optical components, the optical beam into a first split optical beam and a second split optical beam;
• transmitting, by the one or more optical components, to an optical device, the first split optical beam and the second split optical beam;
• receiving, by the one or more optical components, from the optical device, a first reflected beam that is associated with the first split optical beam and a second reflected beam that is associated with the second split optical beam;
• and
• pairing, by the one or more optical components, the first reflected beam with the LO signal and the second reflected beam with the LO signal.

An autonomous vehicle control system comprising:

• a semiconductor substrate and one or more light detection and ranging (LIDAR) circuits disposed on the semiconductor substrate, the one or more LIDAR circuits configured to:
• receive an optical beam generated by a laser source, wherein the optical beam is associated with a local oscillator (LO) signal;
• split the optical beam into a first split optical beam and a second split optical beam;
• transmit, to an optical device, the first split optical beam and the second split optical beam;
• receive, from the optical device, a first reflected beam that is associated with the first split optical beam and a second reflected beam that is associated with the second split optical beam;
• pair the first reflected beam with the LO signal to generate a first paired signal;
• and
• pair the second reflected beam with the LO signal to generate a second paired signal;
• and
• one or more processors configured to control operation of an autonomous vehicle using the first paired signal and the second paired signal.