Dispersion-compensating module

Details Dispersion-compensating module Dispersion-compensating module

2005-02-08

2005-02-08

Bovernick, Rodney (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling function

C385S031000, C385S037000, C385S015000, C398S147000

Reexamination Certificate

active

06853766

ABSTRACT:
The present invention relates to a dispersion-compensating module having a structure which compensates for the dispersion of an optical transmission line in a wavelength band of 1.55 μm and adjusts loss fluctuations among wavelengths in the wavelength band of 1.55 μm into an appropriate range. The module comprises a structure adapted to be installed in an already installed optical fiber transmission line, and has a loss slope with a polarity opposite to that of the optical fiber transmission line in the wavelength band of 1.55 μm. An example of the module comprises a dispersion-compensating optical fiber as a dispersion-compensating device, and an optical fiber doped with a transition metal element as a loss-equalizing device. Consequently, the loss fluctuations among individual wavelengths in the whole transmission line including the dispersion-compensating module are adjusted by the loss-equalizing device in the dispersion-compensating module so as to fall within an appropriate range.

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