Optical signal modifier, lidar tester comprising such a modifier, and corresponding method with contrast enhancement

Abstract

An optical signal modifier for providing an amplified pulsed optical signal is provided. Said optical signal modifier comprises an optical time-domain filter arranged for filtering an optical signal amplified by an amplifier of the optical signal modifier. In this context, the optical signal modifier is configured to determine the corresponding time of the respective pulse and/or the corresponding location of the respective pulse. In addition to this, the optical signal modifier is configured to trigger the optical time-domain filter in accordance with said corresponding time and/or location of the respective pulse such that any signal outside said pulse is suppressed by the optical time-domain filter.

Dependencies are inferred from the claim text.