2×2 optical switching apparatus using photonic crystal...

Details 2×2 optical switching apparatus using photonic crystal... 2×2 optical switching apparatus using photonic crystal...

2006-03-14

2006-03-14

Pak, Sung (Department: 2874)

Optical waveguides

With optical coupler

Switch

C385S016000, C385S129000

Reexamination Certificate

active

07013061

ABSTRACT:
A 2×2 optical switching apparatus using photonic crystal structures has a compact, simple structure and includes an optical-guide module having first, second, third and fourth waveguides, the first and second waveguides guiding a first optical signal of a first input port to a first and a second output port, respectively, the third and fourth waveguides guiding a second optical signal of a second input port to the second and the first output ports, respectively, and formed with photonic crystals having a complete photonic bandgap for a wavelength range of the first and second optical signals, and a switching control section controlling the first and second optical signals to be respectively guided through either a first/third waveguide route or a second/fourth waveguide route according to a route-selecting-control signal inputted from outside. The 2×2 optical switching apparatus has no mechanical motion, little polarization dependence and may be efficiently used in optical networks.

REFERENCES:
patent: 6456416 (2002-09-01), Ichimura et al.
patent: 2002/0021878 (2002-02-01), Allan et al.
patent: 2002/0048422 (2002-04-01), Cotteverte et al.
patent: 62-018524 (1987-01-01), None
patent: 2001-091912 (2001-04-01), None
patent: 2002-131715 (2002-05-01), None
patent: WO 02/14913 (2002-02-01), None

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