Tuning a narrow band filter for telecommunication...

Details Tuning a narrow band filter for telecommunication... Tuning a narrow band filter for telecommunication...

2008-01-29

2008-01-29

Mack, Ricky (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave directional modulation

C359S285000

Reexamination Certificate

active

07324265

ABSTRACT:
An optical tunable filter that includes an tunable acousto-opto deflector (AOD) for deflecting a broad band beam to an expander for projecting the broad band beam to a set of grating for generated a tuned output beam corresponding to a deflection from the AOD and a wavelength resolution of the set of gratings. The AOD further includes an RF driver for tuning the AOD with an RF driving signal. The AOD further comprises a directional tuning acousto-optic crystal. The optical beam expander further includes a first and a second beam expanding prisms that composed of a material suitable for a dense wavelength division multiplexing (DWDM) application over a wavelength range covering S, C and L bands.

REFERENCES:
patent: 3817598 (1974-06-01), Taylor
patent: 4028636 (1977-06-01), Hughes

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