US Patent No: 8,189,968
Number of patents in Portfolio can not be more than 2000
Multimode interference coupler for use with slot photonic crystal waveguides
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May 29, 2012
Issued date -
Aug 28, 2009
filing date -
12/550,186
serial no -
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Abstract
The present invention provides an optical apparatus having a multimode interference coupler configured to optically couple a strip waveguide to a slot photonic crystal waveguide. The multimode interference coupler has a coupling efficiency to the slot photonic crystal waveguide greater than or equal to 90%, a width that is approximately equal to a defect width of the slot photonic crystal waveguide, a length that is equal to or less than 1.5 μm, and interfaces with the slot photonic crystal waveguide at an edge of a period that gives a termination parameter of approximately zero. The optical apparatus may also include an insulation gap disposed between the multimode interference coupler and the slot photonic crystal waveguide, wherein the length of the multimode interference coupler is reduced by approximately one half of a width of the insulation gap.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 7,116,878 Optical waveguide structure | 7 | 2003 | |
| 7,016,586 Optical waveguide structure | 8 | 2003 | |
| 7,162,132 Optical waveguide structure | 6 | 2003 | |
| 7,027,701 Optical waveguide structure | 6 | 2003 | |
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| 5,526,449 Optoelectronic integrated circuits and method of fabricating and reducing losses using same | 100 | 1994 | |
| 7,072,547 Waveguide coupling into photonic crystal waveguides | 3 | 2003 | |
| 7,565,046 Mode transformers for low index high confinement waveguides | 1 | 2007 | |
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| 2003/0133,661 Use of tapered dielectric slab waveguides for input and output coupling of light into photonic crystal devices | 9 | 2002 | |
| 7,082,235 Structure and method for coupling light between dissimilar waveguides | 10 | 2002 | |
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| 2009/0041,462 Optical Band Splitter/Combiner Device Comprising a Three-Arms Interferometer | 2 | 2005 | |
| 8,023,822 Optical band splitter/combiner device comprising a three-arms interferometer | 2 | 2005 | |
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| 6,381,389 Optical coupling device and optical coupling method using photonic crystal | 11 | 2000 | |
| 6,795,621 Waveguide comprising a connection of a photonic-crystal line-defect-waveguide to a total reflection confinement waveguide | 8 | 2002 | |
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| 2006/0198,567 Optical sensor and modulator | 4 | 2006 | |
| 7,613,367 Optical sensor and modulator | 2 | 2006 | |
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| 6,687,447 Stub-tuned photonic crystal waveguide | 8 | 2001 | |
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| 7,269,305 Optical switch | 1 | 2005 | |
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| 5,889,906 Signal router with coupling of multiple waveguide modes for provicing a shaped multi-channel radiation pattern | 54 | 1997 | |
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| 2006/0153,500 Coupling system between dielectric optical guides and planar photonic crystal guides | 1 | 2003 | |
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| 6,782,169 System for efficient coupling to photonic crystal waveguides | 2 | 2002 | |
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| 2005/0135,733 Integrated optical loop mirror | 1 | 2004 | |
Patent Citation Ranking
Maintenance Fees
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| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Nov 29, 2015 |
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