Lidar and method for optical remote sensing

The invention relates to a LIDAR (1) comprising at least one light emitting output (11) and at least one light receiving input (12), and at least one light source (2) being adapted to emit pulsed laser radiation and at least one light detector (3) being adapted to receive reflected laser radiation, wherein said light source (2) is coupled to a first port (411) of a duplexer (4), and a fourth port (421) of said duplexer (4) is coupled to said light emitting output (11), and a third port (412) of said duplexer (4) is coupled to said light receiving input (12), and a second port (422) of said duplexer (4) is coupled to said light detector (3). Furthermore, the invention relates to a car or a robot comprising said LIDAR and a method for optical remote sensing of a target (85).