The coupling efficiency between optical fiber and blue-green light waveguide is pretty low since the limited size of sub-micrometer waveguides fabricated for the blue-green light waveguides, which largely limits the applications of photonic circuits at blue-green light wavelengths. Here we propose the mode field spot of wedge-shaped optical fiber lens is applied to couple the laser light into an optical phased array (OPA) by multiple waveguide channels. The numerical results show that compared to the optical coupling of green light waveguide by single-mode optical fiber, the coupling efficiency can be improved by 100% with 12 channels of OPA is coupled by a wedge-shaped optical fiber lens. This study may solve the coupling problems of blue-green light on photonic chips and have the great potential applications of photonic circuits at blue-green wavelengths.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.