Narrowband, polarization-independent free-space wave notch filter.
A two-dimensional-corrugated-slab-waveguide add/drop filter providing 100% resonant reflection at 1.55 microm wavelength for both TE and TM polarizations with identical FWHM is designed. The fabricated device exhibits a reflectivity spectrum of more than 95% peak reflection for both polarizations at 1.537 microm. The coupling scheme involves the TE0 guided mode only; it is made relatively tolerant by means of a double-sided crossed grating.
Clausnitzer
Tina
T
Friedrich-Schiller University, Institute of Applied Physics, Max-Wien Platz 1, 07745 Jena, Germany.
Tishchenko
Alexander V
AV
Kley
Ernst-Bernhard
EB
Fuchs
Hans-Jörg
HJ
Schelle
Detlef
D
Parriaux
Olivier
O
Kroll
Ulrich
U