Dispersion slope compensator

Details Dispersion slope compensator Dispersion slope compensator

2007-06-19

2007-06-19

Sanghavi, Hemang (Department: 2874)

Optical waveguides

With optical coupler

Plural

C385S015000, C385S033000, C398S081000, C359S589000, C359S872000

Reexamination Certificate

active

11320342

ABSTRACT:
In a dispersion slope compensator of the invention, angular dispersion of a WDM light in which the angular dispersion is already performed in a first direction (Y-axis) with a VIPA plate is performed in a second direction (X′-axis) perpendicular to the first direction with a diffraction grating, and the WDM light is reflected from a three-dimensional mirror and returned to the VIPA plate side. At this point, the three-dimensional mirror is mounted on a rotating stage while placed on a linear-moving stage, which moves the three-dimensional mirror in parallel in the second direction. Thereby, the rotating stage can adjust an angle of a reflection plane of the three-dimensional mirror with respect to an optical axis of the light focused with a lens, which allows optical axis shift of the reflected light to be corrected in the three-dimensional mirror according to setting of a chromatic dispersion compensation amount. Accordingly, chromatic dispersion compensation and dispersion slope compensation can be realized over a wide signal band.

REFERENCES:
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patent: 1 237 308 (2004-09-01), None
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European Search Report in corresponding Patent Application No. 050286350-2216 dated Jul. 14, 2006.

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