An ultra-narrow-band optical filter based on whispering-gallery-mode hybrid-microsphere-cavity

Hongdan Wan; Haohan Zhu; Linqian Liu; Ji Xu; Jin Wang

doi:10.1117/12.2247002

19 October 2016 An ultra-narrow-band optical filter based on whispering-gallery-mode hybrid-microsphere-cavity

Hongdan Wan, Haohan Zhu, Linqian Liu, Ji Xu, Jin Wang

Proceedings Volume 10153, Advanced Laser Manufacturing Technology; 1015311 (2016) https://doi.org/10.1117/12.2247002
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China

Abstract

We demonstrate an ultra-narrow-band mode-selection method based on a hybrid-microsphere-cavity which consists of a coated silica microsphere. Optical field distribution and narrow-band transmission spectrum of the whispering gallery modes (WGM) are investigated by finite-difference time-domain method. WGM transmission spectra are measured for microsphere and tapered fibers with different diameters. A high refractive index layer coated on the microsphere-cavity make the Q factor increased, the transmission spectrum bandwidth compressed and the side-mode suppression ratio increased. Parameters of the hybrid-microsphere-cavity, namely, the coated shell thickness and its refractive index are optimized under different excitation light source as to investigate the whispering-gallery-modes’ transmission spectrum. The 3dB bandwidth of the proposed filter can be less than MHz which will have great potential for applications in all-optical sensing and communication systems.

Citation Download Citation

Hongdan Wan, Haohan Zhu, Linqian Liu, Ji Xu, and Jin Wang "An ultra-narrow-band optical filter based on whispering-gallery-mode hybrid-microsphere-cavity", Proc. SPIE 10153, Advanced Laser Manufacturing Technology, 1015311 (19 October 2016); https://doi.org/10.1117/12.2247002

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available