| 摘要 |
PCT No. PCT/SE96/00323 Sec. 371 Date Nov. 20, 1997 Sec. 102(e) Date Nov. 20, 1997 PCT Filed Mar. 13, 1996 PCT Pub. No. WO96/31025 PCT Pub. Date Oct. 3, 1996An optical node in an optical network includes transmitters (Tx:1-3) and receivers (Rx:1-3) adapted to particular wavelength channels and arranged to communicate via the optical bus network, with receivers and transmitters for corresponding wavelength channels in other nodes. The node includes optical safety switching devices (S1-S5) in connection with the transmitters (Tx:1-3) and receivers (Rx:1-3) of the node, so that the transmitters (Tx:1-3) and receivers (Rx:1-3) can be switched from a first optical fiber (1,2) to a second optical fiber (1,2). |
