METHOD AND ARRANGEMENT FOR IMPROVING MEASURING QUALITY DURING THE OPERATION OF ELECTRO-OPTICAL MIXING DEVICES

摘要

The invention relates to arrangements and methods for improving the signal and transmission properties of laser/electro-optical mixers (EOM) of measuring and data transmission links. The idea of attempting to suppress coherent properties of laser light is novel since, until now, the aim has always been to obtain the greatest possible coherence or coherence length in most technical applications. The invention has the following features: suppressing coherence and intensity fluctuations in the beam path of laser EOM by using optical methods and suppressing the coherence in the output radiation of the laser source, e.g. by a remodulated current pulse modulation or excitation of a number of modes within a laser diode (VCSEL).