Attenuator having reduced optical loss in the pass mode

Details Attenuator having reduced optical loss in the pass mode Attenuator having reduced optical loss in the pass mode

2005-02-08

2005-02-08

Ullah, Akm Enayet (Department: 2874)

Optical waveguides

Planar optical waveguide

Thin film optical waveguide

C438S022000, C385S140000, C385S147000, C385S011000, C250S216000

Reexamination Certificate

active

06853793

ABSTRACT:
An optical device includes a ridge waveguide defined by a ridge extending from a slab of a light transmitting medium. The optical device also includes trenches extending into the slab of light transmitting medium on opposing sides of the ridge. At least one of the trenches is associated with a trench displacement that tapers from a first displacement to a second displacement. The trench displacement is the distance between the ridge and the side of a trench closest to the ridge. The optical device also includes at least one electrical contact positioned in at least one of the trenches.

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