发明名称 |
Optical communications networks |
摘要 |
PCT No. PCT/GB95/00088 Sec. 371 Date Nov. 26, 1996 Sec. 102(e) Date Nov. 26, 1996 PCT Filed Jan. 18, 1995 PCT Pub. No. WO95/19689 PCT Pub. Date Jul. 20, 1995An optical communications network includes a plurality of passive optical networks (PONs) connected in a ring in PON address order, in which communication channels between terminals are wavelength multiplexed. Each optical link between adjacent PONs includes a tunable wavelength filter, and a common wavelength allocation database is arranged dynamically to select wavelengths for a connection and to provide corresponding control signals to the appropriate filters such that the allocated wavelengths for a connection can pass over only the transmission path between the terminals. Thus the same wavelengths can be re-used for another connection whose transmission path does not overlap with any existing transmission path involving those wavelengths.
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申请公布号 |
US5774244(A) |
申请公布日期 |
1998.06.30 |
申请号 |
US19960676257 |
申请日期 |
1996.11.26 |
申请人 |
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY |
发明人 |
TANDON, VIVEK;WILBY, MARK;SEMOS, ROBERT E. |
分类号 |
H04B10/213;H04J14/02;H04Q11/00;(IPC1-7):H04J14/02 |
主分类号 |
H04B10/213 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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