发明公开
EP2778727A1 Ring combiner 审中-公开
环合路器

Ring combiner
摘要:
A waveguide comprises an annular cross-section and a first numerical aperture (NA) at one end. The waveguide further comprises either an annular or circular cross-section at the other end, which has a second NA. The waveguide has a progressively-varying NA, which varies from the first NA (at one end) to the second NA (at the other end).
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