High isolation, optical add-drop multiplexer

Details High isolation, optical add-drop multiplexer High isolation, optical add-drop multiplexer

1996-03-01

1998-01-27

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359127, H04J 1402

Patent

active

057127174

ABSTRACT:
According to the invention, a first band-pass multidielectric filter (F1) receives optical signals, transmits at least one of them and reflects the untransmitted signals. An adding means (F2) inserts among them at least one other optical signal. A photoinduced Bragg grating filter (R) receives the signals reflected by the first filter and transmits them to the adding means and reflects any optical signal of the same wavelength as the signal transmitted by the first filter and which is liable to exist among the signals reflected by it. Application to optical telecommunications.

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