Compact integrated free space circulator

摘要

A miniature integrated free space circulator comprising: a first polarizing beam splitting prism (1), a 1/2 wave plate (2), a Faraday rotating plate (3), a beam splitting prism (4), a quarter wave plate (5) and a pair of reflecting plates 6 and 7, wherein the first polarizing beam splitting prism 1, the 1/2 wave plate 2, the Faraday rotating plate 3 and the beam splitting prism 4 are sequentially installed, The 1/4 wave plate 5 and one reflecting plate 6 are sequentially bonded and installed on the side adjacent to the 1/2 wave plate 2 of the first polarizing beam splitting prism 1, and the other reflecting plate 7 is It is installed on the side adjacent to or opposite the Faraday rotating plate 3 of the beam splitting prisms 4 and 8, and the reflecting plate 7 is installed on the side opposite to the Faraday rotating plate 3 of the beam splitting prism 8. In this case, the reflector 7 covers a part of the side opposite to the Faraday rotating plate 3 of the beam splitting prism 8, and includes the polarizing beam splitting prisms 1 and 4, the wave plates 2 and 5, and the Faraday rotating plate 3 ), reflectors 6 and 7, and birefringent crystals 8 through the organic combination of optical elements, the element has advantages such as small volume, high integration, easy production, low cost, etc., and has excellent market prospects. .