Compact sensors based on cascaded single-mode-multimode-single-mode fiber structures

David Monzón-Hernández*, Alejandro Martínez-Ríos, Guillermo Salceda-Delgado, Joel Villatoro

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Concatenated single-mode-multimode-single-mode (SMS) structures are demonstrated as functional sensing platforms. The devices are fabricated by periodically inserting micrometric sections of multimode optical fiber (MMF) in a single-mode fiber (SMF). The periodic change of the core diameter produces a single strong resonant transmission notch, tunable in the wavelength range from 1200 to 1600 nm. It was found that the position of the notch changed with temperature and refractive index. The devices introduced here are highly compact (length less than 5 mm), simple to fabricate and robust; hence, they are adequate for diverse sensing applications.

Original languageEnglish
Article number032502
Number of pages3
JournalApplied Physics Express
Issue number3
Early online date27 Feb 2013
Publication statusPublished - Mar 2013


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