A LiDAR transceiver for scanning an environment over a field of view (FOV) having an azimuthal angular range and a polar angular range. The transceiver comprising a photonic integrated circuit (PIC) receiver, a PIC transmitter and a diffractive optical element (DOE). The DOE having a front and back surface, a transmitting region configured to transmit from the front surface a beam of light received at the back surface, a receiving region configured to steer the azimuthal component of light incident on the front surface by an amount dependent on wavelength and transmit the light from the back surface of the DOE. The receiving region distributed on two opposing sides of the transmitting region. The transmitting region of the DOE configured to emit the light to the environment, the light having an emission angle within the azimuthal angular range of the FOV and within the polar angular range of the FOV, the azimuthal component of the emission angle being dependent on wavelength of the light. The receiving region of the DOE configured such that received light has an azimuthal component independent of the wavelength when emitted from the back surface.
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