WAVELENGTH SELECTIVITY ADDING-DROPPING DEVICE

    公开(公告)号:JPH11289562A

    公开(公告)日:1999-10-19

    申请号:JP35819498

    申请日:1998-12-16

    Abstract: PROBLEM TO BE SOLVED: To obtain a device for a wavelength division-multiplexed optical communication network of an independent transmission form by separating identified spectrum components from another spectrum component at the time of dropping through the use of a single optical switch of (1×1) or (2×2) singly or incombination with another optical switch. SOLUTION: A wavelength selectivity adding-dropping multiplexer(WSADM) receives a WDM signal 2 with N-number of spectrum components (namely wavelength) λ1 -λN and removes (namely drops) a first selected spectrum component λ1 from these plural spectrum components. In addition, a second selected spectrum component N+1 is added to these plural spectrum component. In case when a first spectrum component λ1 is dropped, the second spectrum N+1 is added for exchanging this dropped spectrum component. The spectrum components can be added or dropped.

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