公开(公告)号：JP2002051014A

公开(公告)日：2002-02-15

申请号：JP2001156251

申请日：2001-05-25

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BONCEK RAYMON K ,  EICHENBAUM BERNARD RAYMOND ,  EMERY GARY PATRICK ,  WHITE IAN A

IPC: H04B10/20 ,  H04J14/00 ,  H04J14/02 ,  H04L12/42 ,  H04L12/46

Abstract: PROBLEM TO BE SOLVED: To provide an optical communication network architecture that improves a system loss characteristic by effectively utilizing a primary network having a multi-band module and a sub network having the multi-band module or a single wavelength A/D module. SOLUTION: A practical embodiment includes an improved architecture of the optical communication system employing a wavelength division multiplex(WDM) technology or other multiplex technology. The system architecture includes a network consisting of primary nodes (12) interconnected by a proper optical transmission medium (14) and of sub networks comprising secondary nodes (S) connected to the various primary nodes interconnected by proper optical transmission media. At least one of the primary nodes has the multi-band module (M), and the sub networks are connected to at least one of the primary nodes having the multi-band module where at least one of the secondary nodes in the sub networks includes the multi-band module or the single wavelength A/D module.

公开(公告)号：JPH11313351A

公开(公告)日：1999-11-09

申请号：JP2115499

申请日：1999-01-29

Applicant: LUCENT TECHNOLOGIES INC

Inventor： WHITE IAN A

IPC: H04B10/02 ,  H04Q3/52 ,  H04Q11/00 ,  H04L12/28

Abstract: PROBLEM TO BE SOLVED: To provide an optical exchange system with enhanced capability that multiplexes an optical signal and selects a path. SOLUTION: A multiplexer is provided to an optical network to multiplex an optical signal. The multiplexer includes pluralities of input fibers 14, 15, 16, 17 placed to receive pluralities of optical input signals. Each optical input signal is defined by its wavelength. A 1st converter 44 is placed in series with each of pluralities of input fibers 14-17 and converts each optical input signal into an electric input signal so that each electric input signal is defined by a frequency corresponding to a wavelength of the optical input signal. A 2nd converter is placed in series with the 1st converter 44 and converts the electric input signal into pluralities of optical signals with different wavelength bands.