Electromagnetic wave frequency filter

Details Electromagnetic wave frequency filter Electromagnetic wave frequency filter

2008-01-22

2008-01-22

Pak, Sung (Department: 2874)

Optical waveguides

With optical coupler

Particular coupling structure

C385S014000, C385S129000

Reexamination Certificate

active

07321707

ABSTRACT:
In this electromagnetic wave frequency filter, an electromagnetic wave of a predetermined frequency matching a resonant frequency of a resonator41is transmitted from an input waveguide2to an output waveguide3through the resonator41, and is outputted from a drop port P31. This filter has an input-waveguide-side reflector211and an output-waveguide-side reflector311, which reflect the electromagnetic wave of the predetermined frequency. The electromagnetic wave frequency filter satisfies the following relation:in-line-formulae description="In-line Formulae" end="lead"?Qinb/(1−cos θ1)<<Qv,in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?Qinb/(1−cos θ1)=Qinr/(1−cos θ2),in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?θ1, θ2≠2Nπ(N=0, 1, . . . ),in-line-formulae description="In-line Formulae" end="tail"?where θ1is a phase shift amount of the electromagnetic wave reflected by the input-waveguide-side reflector211, θ2is a phase shift amount of the electromagnetic wave reflected by the output-waveguide-side reflector311, Qinbis a Q-factor between the resonator41and the input waveguide2, Qinris a Q-factor between the resonator41and the output waveguide31, and Qvis a Q-factor between the resonator41and free space.

REFERENCES:
patent: 2002/0000328 (2002-01-01), Motomura et al.
patent: 2002/0023777 (2002-02-01), Ochi et al.
patent: 2002/0041425 (2002-04-01), Baba et al.
patent: 2005/0147371 (2005-07-01), Noda et al.
patent: 2005/0175358 (2005-08-01), Ilchenko et al.
patent: 2007/0009205 (2007-01-01), Maleki et al.
patent: 0397177 (1990-11-01), None
patent: 06-283866 (1994-10-01), None
patent: 2001-508887 (2001-07-01), None
patent: 2002-71981 (2002-03-01), None
patent: 2003-139977 (2003-05-01), None
patent: 2003-279765 (2003-10-01), None
patent: 2004-212416 (2004-07-01), None
patent: 2004-233941 (2004-08-01), None
patent: 2004-245866 (2004-09-01), None
patent: 98/57207 (1998-12-01), None
patent: 01/20379 (2001-03-01), None
S. Fan, et al.; “Channel Drop Tunneling through Localized States;”Physical Review Letters; vol. 80; No. 5; Feb. 2, 1998; pp. 960-963.
C. Manolatou, et al.; “Coupling of Modes Analysis of Resonant Channel Add-Drop Filters;”IEEE Journal of Quantum Electronics; vol. 35; No. 9; Sep. 1999; pp. 1322-1331.
B.-S. Song, et al.; “Photonic Devices Based on In-Plane Hetero Photonic Crystals;”Science; vol. 300; Jun. 6, 2003; p. 1537.
S. Hoshoku, et al.; “Optical Add/Drop Filter Using an In-plane Hetero Photonic Crystal;”Extended Abstracts of the 63rdAutumn Meeting of Japan Society of Applied Physics; Separate vol. 3; 2002; pp. 916, 25p-YA-17 with English abstract (3 Sheets total.).
S. Asano, et al.; Optical Add/Drop Filter Using 2D Photonic Crystal Slab—Interference between single defects;Extended Abstracts of the 49thSpring Meeting of Japan Society of Applied Physics; Separate vol. 3; 2002; pp. 1039, 29p-L-7 with English abstract (3 Sheets total.).
Y. Sugimoto, et al.; “Design and characterization of coupling-controlled directional coupler (CC-DC) based on photonic-crystal;”Extended Abstracts of the 50thSpring Meeting of Japan Society of Applied Physics; Separate vol. 3; 2003; pp. 1137, 29a-YN-5 with English abstract (3 pages total.).
Y. Sugimoto, et al.; “Design, Fabrication, and characterization of coupling-strength-controlled directional coupler based on two-dimensional photonic-crystal slab waveguides;”Applied Physics Letters; vol. 83; No. 16; Oct. 20, 2003; pp. 3236-3238 (2 Sheets total.).

Affiliated with

Also associated with

Rating

Electromagnetic wave frequency filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electromagnetic wave frequency filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electromagnetic wave frequency filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2784997