Arrangement and method for increasing the functional safety of an opto-pyrotechnic initiator

Arrangement with opto-pyrotechnic initiator, in which a pyrotechnic mixture can be ignited by the effect of laser radiation, at least one laser which emits the laser radiation, and an optical fibre, via which the laser radiation is guided to the opto-pyrotechnic initiator, characterized in that

• an optical filter element having power-dependent or intensity-dependent transmission or reflection for the laser radiation is arranged in a beam path of the laser radiation between the laser and an initiating impingement location of the laser radiation in the opto-pyrotechnic initiator, wherein the filter element and a beam guidance of the laser radiation through the filter element are selected such that for a laser power of the at least one laser by which an initiation is to be effected in the opto-pyrotechnic initiator in the arrangement, the filter element has a higher transmission or reflection, or can be switched to a higher transmission or reflection by applying an optical or electronic signal that is independent of the laser radiation than at a lower laser power.