Low-loss integrated circuits

Details Low-loss integrated circuits Low-loss integrated circuits

G - Physics

02

B

G02B 6/12 (2006.01) G02B 5/20 (2006.01) G02B 5/28 (2006.01) G02B 6/00 (2006.01) G02B 6/122 (2006.01) G02B 6/125 (2006.01) G02B 6/13 (2006.01) G02B 6/43 (2006.01) H01S 5/10 (2006.01)

Patent

CA 2153485

An optical circuit and a method for substantially eliminating radiation losses associated with optical integrated circuits and, in particular, bends in optical waveguides, is disclosed. The circuit and waveguide are fabricated on a substrate having a periodic dielectric structure. The periodic dielectric structure exhibits a range of frequencies of electromagnetic radiation which cannot propagate into the structure. The range of frequencies is known as a photonic band gap or frequency band gap. Radiation at a frequency within the frequency band gap of the structure is confined within the circuit and waveguide by the periodic dielectric structure surrounding the circuit and waveguide. Radiation losses are substantially eliminated.

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