Multichannel High-Bandwidth Coupling of Ultradense Silicon Photonic Waveguide Array to Standard-Pitch Fiber Array

Autor:	Christopher V. Jahnes, Clint L. Schow, Solomon Assefa, Sheng Zhang, Min Yang, Victor I. Kopp, Benjamin G. Lee, Yurii A. Vlasov, William M. J. Green, Fuad E. Doany, Jonathan Singer, Jeffrey A. Kash
Rok vydání:	2011
Předmět:	Coupling Optics Silicon photonics Materials science business.industry Wavelength-division multiplexing Inner core Single-mode optical fiber Photonics business Waveguide (optics) Atomic and Molecular Physics and Optics Numerical aperture
Zdroj:	Journal of Lightwave Technology. 29:475-482
ISSN:	1558-2213 0733-8724
DOI:	10.1109/jlt.2010.2088110
Popis:	A multichannel tapered coupler interfacing standard 250-μm-pitch low-numerical-aperture (NA) polarization-maintaining fiber arrays with ultradense 20- μm-pitch high-NA silicon waveguides is designed and fabricated. The coupler is based on an array of 12 dual-core glass waveguides on 250-μ m pitch that are tapered to a 20- μm pitch, simultaneously providing both pitch and spot-size conversion. At the wide end, the inner core matches the NA and mode profile of standard single-mode fiber. When drawn and tapered, the inner core “vanishes” and the outer core, surrounded by the clad, matches the NA and mode profile of the on-chip photonic waveguide. Ultradense high-efficiency coupling to an array of Si photonic waveguides is demonstrated using a 12-channel polarization-maintaining-fiber pigtailed tapered coupler. Coupling to Si waveguides is facilitated using SiON spot-size converters integrated into the Si photonic IC to provide 2-3-μm mode field diameters compatible with the tapered coupler. The tapered coupler achieves
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8924bca87c4549f98ca630f9a2667f0f https://doi.org/10.1109/jlt.2010.2088110 Zobrazit plný text záznamu