Mode tailoring in subwavelength-dimensional semiconductor micro/nanowaveguides by coupling optical microfibers | Zendy

Fuxing Gu | Zendy; Hongbin Cui | Zendy; Feng Liao | Zendy; Xing Lin | Zendy; Haifeng Wang | Zendy; Heping Zeng | Zendy

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Mode tailoring in subwavelength-dimensional semiconductor micro/nanowaveguides by coupling optical microfibers

Author(s) -

Fuxing Gu,

Hongbin Cui,

Feng Liao,

Xing Lin,

Haifeng Wang,

Heping Zeng

Publication year - 2016

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.24.023361

Subject(s) - microfiber , materials science , optics , semiconductor , optoelectronics , extinction ratio , fresnel equations , reflection (computer programming) , interference (communication) , coupling (piping) , total internal reflection , fabrication , optical fiber , wavelength , refractive index , telecommunications , physics , channel (broadcasting) , computer science , metallurgy , composite material , programming language , medicine , alternative medicine , pathology

Benefitted from large fraction of evanescent wave and high endface reflectivity, we have realized mode tailoring in subwavelength-dimensional semiconductor micro/nanowaveguides (MN-WGs) by coupling optical silica microfibers. By investigating the reflection spectra, it was found that the microfiber tips could offer effective reflection and can been used to continuously and reversibly tune the interference wavelengths by changing the contact points with the MN-WGs. The measured extinction ratio in the interference patterns was as high as ~10 dB. In addition, tunable free spectral range of photoluminescence emissions and humidity sensing were also demonstrated. Its advantages of non-destructively tuning, simple fabrication, easy interrogation, and remote monitoring, offer great possible prospects for developing miniature tunable lasers, sensors, and biological endoscopy.

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