Patent ID: 6144474
Filing Date: 2000-11-07
Classification: H04B,H04J

Abstract:
An optical transmission system comprising:an optical fiber transmission line;a plurality of optical repeaters arranged along the transmission line; anda plurality of gain equalizers, each gain equalizer being arranged along the transmission line after an integer number of optical repeaters, each gain equalizer equalizing the gain of upstream optical repeaters, wherein each optical repeater includesa gain equalizer, anda connection mechanism having a first state and a second state so thatwhen the connection mechanism is in the first state, the gain equalizer of the optical repeater equalizes the gain of upstream optical repeaters, and when the connection mechanism is in the second state, the gain equalizer of the optical repeater does not equalize the gain of upstream optical repeaters, the connection mechanism of each optical repeater being in either the first state or the second state to provide the plurality of gain equalizers arranged along the transmission line.