Anti-reflection coating for the pass-band of photonic...

Details Anti-reflection coating for the pass-band of photonic... Anti-reflection coating for the pass-band of photonic...

2007-07-31

2007-07-31

Sanghavi, Hemang (Department: 2874)

Optical waveguides

Optical fiber waveguide with cladding

Utilizing nonsolid core or cladding

C385S129000, C385S131000

Reexamination Certificate

active

11210231

ABSTRACT:
Light transmission is maximized through the pass band of a photonic bandgap (PBG) crystal (having alternating high- and low-index material) while preserving high reflection for stop band. An anti-reflective coating (ARC) is used to coat the PBG crystal wherein the ARC material has a refractive index of n=(nair×nhigh index material)1/2and thickness around λc/8 where λc is center wavelength.

REFERENCES:
patent: 6879766 (2005-04-01), Tomaru
patent: 7020373 (2006-03-01), Shirane et al.
Young, L. et al., “Low Pass and High-Pass Filters Consisting of Multilayer Dielectric Stacks,” IEEE Transactions on Microwave Theory and Techniques, vol. MTT-14, No. 2, Feb. 1966, pp. 75-80.

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