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Updated: May 17, 2026

Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
Published on: July 25, 2022
Enhancement of free spectral range using pentuple microresonator
Sabita Brata Dey1, Sanjoy Mandal, Narendra Nath Jana
1Department of Applied Electronics & Instrumentation Engineering, College of Engineering & Management, Kolaghat, Kolaghat Thermal Power Plant Township, District Midnapur (East), India. sb_dey@rediffmail.com
Abstract:
The work addresses the issues of the ever-expanding demand of wide free spectral range (FSR) compatible integrated optic passive devices used in commercial communication systems like dense wavelength division multiplexing and a host of other applications. FSR expansion has been achieved by using the Vernier principle. The analysis has been carried out using Mason's rule and the delay line signal processing approach. Performances of two resonator structures made of silicon-on-insulator-based waveguides with two different effective refractive indices, viz., 1.7 and 2.811, have been compared. The maximum FSR of 3527 THz with finesse of 4409 has been obtained from the first architecture.
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