Bragg gratings in thin-film LiNbO3 waveguides

QC 20180110
We design, fabricate and characterize sidewall corrugated Bragg gratings in a high confinement integrated optics lithium niobate platform, comprising submicrometric photonic wires, tapers and grating couplers to interface off-chip standard telecom optical fibers. We analyze the grating performance as band-rejection filter for TE-polarized signals in the telecom C-band, considering both rectangular and sinusoidal sidewall profiles, and demonstrate record extinction ratios as high as 27 dB and rejection bandwidths as narrow as 3 nm. The results show the potential for an efficient integration of novel photonic functionalities into low-footprint LiNbO3 nonlinear and electro-optical waveguide devices.

NATURVETENSKAP Fysik Annan fysik hsv//swe
NATURAL SCIENCES Physical Sciences Other Physics Topics hsv//eng
Lithium niobate; Integrated optics devices; Bragg reflectors; Thin film devices and applications; Waveguides

Schollhammer, JeanKTH,Tillämpad fysik(Swepub:kth)u1ww6lp2 (author)
Errando-Herranz, CarlosKTH,Mikro- och nanosystemteknik(Swepub:kth)u1scv8nb (author)
Gylfason, Kristinn BKTH,Mikro- och nanosystemteknik(Swepub:kth)u1v3y7u7 (author)
Gallo, KatiaKTH,Kvant- och biofotonik,Nonlinear and Quantum Photonics(Swepub:kth)u148rx0z (author)
KTHKvantelektronik och -optik, QEO (creator_code:org_t)

By the author/editor: Baghban, Mohamma ...; Schollhammer, Je ...; Errando-Herranz, ...; Gylfason, Kristi ...; Gallo, Katia

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Other Physics To ...

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