Experimental and theoretical investigation of polygon-based swept-source with continuous adjustable free spectral range

• Published in: Optics communications Vol. 478; p. 126401
• Main Authors: Cao, Jing, Wang, Pinghe, Zhang, Yan, Shi, Guohua, Liu, Yong
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.01.2021
• Subjects: Free spectrum range; Polygon-based filter; Swept-source; Wavelength scanning laser; Swept-source; Free spectrum range; Wavelength scanning laser; Polygon-based filter

In this paper, a method that enables adjustment of the free spectral range (FSR) of a swept-source is presented by introducing a right-angled prism inside a polygon-based filter. Firstly, the feasibility of this method is analyzed in theory. When adopting the prism at two different cases, the theore...