Assessing a network

Details Assessing a network Assessing a network

2005-12-15

2011-10-25

Lee, Hwa S. A (Department: 2886)

Optics: measuring and testing

By light interference

Using fiber or waveguide interferometer

C356S073100

Reexamination Certificate

active

08045174

ABSTRACT:
A network is assessed, in particular, a network having a main line and a plurality of branch lines. The method includes the steps of: (i) introducing test signals into the main line, the main line being coupled to the branch lines; (ii) imposing a modulation on test signals which propagate along the branch line, and (iii) monitoring test signals returned along the main line. The imposed phase modulation is detected interferometrically such that the test signals from the designated branch line can be distinguished with respect to the signals returned from other branch lines.

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