Fiber pigtailed fabry-perot etalons

Fiber Pigtailed Fabry-Perot Etalons consist of a solid or air gap etalon, collimating lenses and input/output fibers. They can be made for different spectral window (UV, VIS, IR) dependent on the specific application. The solid etalon is made of optical quality glass (fused silica, BK7, ...) while air spaced etalons are built on Zerodur frame.