e/Distributed feedback laser

Information
has gloss	eng: A distributed feedback laser (DFB) is a type of laser diode, quantum cascade laser or optical fibre laser where the active region of the device is periodically structured as a diffraction grating. The structure builds a one dimensional interference grating (Bragg scattering) and the grating provides optical feedback for the laser.
lexicalization	eng: Distributed Feedback Laser
instance of	c/Semiconductor lasers

Meaning
German
has gloss	deu: Distributed Feedback Laser, kurz DFB-Laser, sind Laserdioden, in denen das aktive Material periodisch strukturiert ist. Die Strukturen wechselnder Brechzahl bilden ein eindimensionales Interferenzgitter bzw. Interferenzfilter (Bragg-Reflektor). Die Interferenz führt zu wellenlängenselektiver Reflexion und bildet die optische Rückkopplung des Lasers.
lexicalization	deu: Distributed Feedback Laser