| 摘要 |
An apparatus for optically circulating light beams between ports is disclosed, with a first port and third port positioned at a proximal end of the apparatus, a second port positioned at a distal end of the apparatus. The apparatus includes a first beam bender. The apparatus may additionally comprise end portions and imaging elements. The first and second end portions are positioned at either end of the apparatus to impart a propagation direction dependent polarization to the first light beam and the second light beam. The first imaging element and the second imaging element are positioned between the first and second end portions. The first imaging element bends the first light beam to a focal point between the first and the second imaging element. The second imaging element bends the second light beam to the focal point.
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