Abstract

Measurement of optical loss in nanophotonic waveguides is necessary for monitoring the properties of integrated photonic devices. We propose a simple method of measuring the optical loss using integrated nanocavities. It is shown theoretically that weak coupling between the waveguide and cavities leads to a direct estimation of the optical loss by measuring light radiated from the cavities. In addition, we experimentally demonstrate the optical loss in a fabricated photonic crystal waveguide. Our method gives not only a degree of freedom in real-time monitoring of the optical properties of nanophotonic structures, but it also can be used for various waveguide-based applications.

© 2016 Optical Society of America

High Q factor InP photonic crystal nanobeam cavities on silicon wire waveguides

Guillaume Crosnier, Dorian Sanchez, Alexandre Bazin, Paul Monnier, Sophie Bouchoule, Rémy Braive, Grégoire Beaudoin, Isabelle Sagnes, Rama Raj, and Fabrice Raineri
Opt. Lett. 41(3) 579-582 (2016)

Scattering of a cross-polarized linear wave by a soliton at an optical event horizon in a birefringent nanophotonic waveguide

Charles Ciret and Simon-Pierre Gorza
Opt. Lett. 41(12) 2887-2890 (2016)

On-chip integrated optofluidic complex refractive index sensing using silicon photonic crystal nanobeam cavities

Xingwang Zhang, Guangya Zhou, Peng Shi, Han Du, Tong Lin, Jinghua Teng, and Fook Siong Chau
Opt. Lett. 41(6) 1197-1200 (2016)

Vertical optical ring resonators fully integrated with nanophotonic waveguides on silicon-on-insulator substrates

Abbas Madani, Moritz Kleinert, David Stolarek, Lars Zimmermann, Libo Ma, and Oliver G. Schmidt
Opt. Lett. 40(16) 3826-3829 (2015)

Long distance measurement using optical sampling by cavity tuning

Hanzhong Wu, Fumin Zhang, Tingyang Liu, Petr Balling, Jianshuang Li, and Xinghua Qu
Opt. Lett. 41(10) 2366-2369 (2016)