公开(公告)号：US09788089B2

公开(公告)日：2017-10-10

申请号：US14900411

申请日：2014-06-11

Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY

Inventor： Ken-ichi Sato ,  Hiroshi Hasegawa ,  Hiroto Ishida

IPC: H04Q11/00 ,  H04J14/02 ,  H04Q3/52

CPC classification number: H04Q11/0005 ,  H04J14/0212 ,  H04J14/0217 ,  H04J14/0219 ,  H04Q3/52 ,  H04Q2011/0007 ,  H04Q2011/0015 ,  H04Q2011/0037 ,  H04Q2011/0052 ,  H04Q2213/1301

Abstract: An optical add-drop apparatus dropping a signal in input optical fibers in an optical cross-connect apparatus or adding a signal into output optical fibers from the cross-connect apparatus, optical cross-connect portions of the cross-connect apparatus connected such that a cross-connect portion internal connection output port is directly connected to an internal connection input port of another cross-connect portion and is indirectly connected via the other cross-connect portion to an internal connection output port of a further cross-connect portion, the add-drop apparatus having: photocouplers connected to part or all of the input fibers connected to each cross-connect portion; and drop signal receiving apparatuses each having optical switches each receiving and alternately selecting a signal output from photocouplers connected to respective different cross-connect portions of the cross-connect portions out of the photocouplers, the drop signal receiving apparatuses selecting a signal of a wavelength for each signal respectively output from the optical switches.