[Home ] [Archive]   [ فارسی ]  
:: Volume 24 - ::
ICOP & ICPET 2018, 24 - : 909-912 Back to browse issues page
Investigation of Fano resonance line shapes in coupling between single-mode optical fiber and WGM microresonator using diffraction grating
Hamid Nadgaran * 1, Reza Zolfaghari Ghorbani 1, Raheleh Pourmand 2
1- Physics Dep. Shiraz University
2- Physics Dep. Estahban Higher Education Center
Abstract:   (151 Views)
It has been demonstrated that, in vertical coupling structure between WGM microresonator and a single mode optical fiber using the metallic diffraction grating, Fano resonance line-shape depends on incident wave polarization. Under TE and TM polarization, Fano resonance line-shape are peak-dip resonance and dip-peak resonance respectively. Also, it is shown that by increasing the gap size between the diffraction grating and microresonator, the Q-factor increase and the on-off intensity difference of the reflection spectral line decrease continuously. This progressive trend of Q-factor continues until the gap size reaches 350 nm. Beyond that, the Fano resonance loses its ideal line-shape because of decreasing coupling strength. This optimum gap size can be exploited in near filed imagining of confocal microscopes.
Keywords: Fano resonance, vertical coupling, Microresonator WGM
Full-Text [PDF 631 kb]   (73 Downloads)    
Type of Study: Research | Subject: Special
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA code


XML   Persian Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Nadgaran H, Zolfaghari Ghorbani R, Pourmand R. Investigation of Fano resonance line shapes in coupling between single-mode optical fiber and WGM microresonator using diffraction grating. ICOP & ICPET. 2018; 24 :909-912
URL: http://opsi.ir/article-1-1424-en.html


Volume 24 - Back to browse issues page
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
Persian site map - English site map - Created in 0.05 seconds with 30 queries by YEKTAWEB 3728