Optical switch having a two-level crossing between input/output

Details Optical switch having a two-level crossing between input/output Optical switch having a two-level crossing between input/output

1996-06-21

1998-06-02

Ullah, Akm E.

Optical waveguides

With optical coupler

Switch

G02B 626

Patent

active

057613524

ABSTRACT:
An optical switch has an input optical waveguide and an output optical waveguide that are physically and optically separated from each other by a two-level crossing arrangement. The direction of optical signal propagation is switchable by a connecting optical waveguide to provide optical coupling between the input and output optical waveguides. Crosstalk and loss due to diffraction at each crossing are small, and insertion loss does not increase, even for a large-scale application.

REFERENCES:
patent: 4618210 (1986-10-01), Kondo
patent: 4737003 (1988-04-01), Matsumura et al.
patent: 4813757 (1989-03-01), Sakano et al.

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