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AssigneeWuhan Research Institute of Posts and Telecommunications, MII
InventorsYong Luo, Luozhen Fang, Shuihua Liu, Kun Ma, Yanzhong Xu
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The invention discloses a comb wavelength division multiplexer, comprising: an input device at input side, a polarization splitter, a λ/2 phase delay wave plate; a birefringent crystal filter; and a reflective parallel light polarization splitter for reflecting an incident light beam from the birefringent crystal filter into the birefringent crystal filter again, and passing the reflected light beam through the λ/2 phase delay wave plate and the polarization splitter to an output side, so that the input side and the output side are a same side. The invention uses only one-stage filter to obtain a two-stage filtering effect. The channel isolation factor is improved and the size of the apparatus is reduced (FIG. 2).
A comb wavelength division multiplexer having an input side including an input device, said multiplexer comprising:
Dependencies are inferred from the claim text.