Optical pulse widening device for white light source, utilized for calibrating optical sensor, has coupling device coupling laser beams into light conductors, and uncoupling device streamlines together light beams from conductors

摘要

The device (10) has a set of light conductors (12.1, 12.2, 12.3) i.e. single-mode fibers, provided with different optical lengths, where a light guard length linear distribution is provided along the optical lengths of the conductors. A coupling device (14) couples laser beams (20) into the conductors. An uncoupling device (16) streamlines the light beams together from the conductors, where the conductor are formed such that a maximum delay difference between the two conductors amounts to 0.8 times of an inverse repetition rate. Independent claims are also included for the following: (1) a light source comprising a pulsed laser for delivering light with a repetition rate and a pulse duration (2) a method for generating light (3) a method for generating a light curve with a predetermined time changing frequency or wavelength (4) a method for calibrating an optical sensor (5) a method for manufacturing a pulse form device for forming a light pulse.