Journal
OPTICS EXPRESS
Volume 26, Issue 21, Pages 27058-27063Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.027058
Keywords
-
Categories
Funding
- Agence Nationale de la Recherche [PN-II-ID-JRP-RO-FR-2014-0013]
Ask authors/readers for more resources
Light routing and manipulation are important aspects of integrated optics. They essentially rely on beam splitters, which are at the heart of interferometric setups and active routing. The most common implementations of beam splitters suffer either from strong dispersive response (directional couplers) or tight fabrication tolerances (multimode interference couplers). In this paper we fabricate a robust and simple broadband integrated beam splitter based on lithium niobate with a splitting ratio achromatic over more than 130 nm. Our architecture is based on spatial adiabatic passage, a technique originally used to transfer entirely an optical beam from a waveguide to another one that has been shown to be remarkably robust against fabrication imperfections and wavelength dispersion. Our device shows a splitting ratio of 0.52 +/- 0.03 and 0.48 +/- 0.03 from 1500 nm up to 1630 nm. Furthermore, we show that suitable design enables the splitting in output beams with relative phase 0 or pi. Thanks to their independence to material dispersion, these devices represent simple, elementary components to create achromatic and versatile photonic circuits. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available