METHOD FOR FABRICATING THREE-DIMENSIONAL PHOTONIC CRYSTAL

• US 20090092368A1
• Filed: 12/08/2008
• Published: 04/09/2009
• Est. Priority Date: 03/25/2005
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Ikemoto, Kiyokatsu, Takagi, Akinari, Nobayashi, Kazuya, Hoshi, Hikaru
• Granted Patent: US 7,680,382 B2
• Time in Patent Office: Days
• US Class Current: 385/131
• CPC Class Codes: B82Y 20/00 Nanooptics, e.g. quantum optics or photonic crystals
• CPC Class Codes: G02B 1/005 made of photonic crystals or photonic band gap materials photonic band-gap structures or photonic lattices in integrated optics G02B6/1225; photonic band-gap structures or photonic lattices in optical fibres G02B6/02295
• CPC Class Codes: G02B 6/00 Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
• CPC Class Codes: G02B 6/10 of the optical waveguide type G02B6/02, G02B6/24 take precedence; devices or arrangements for the control of light by electric, magnetic, electro-magnetic or acoustic means G02F1/00; transferring the modulation of modulated light G02F2/00; optical logic elements G02F3/00; optical analogue/digital converters G02F7/00
• CPC Class Codes: G02B 6/1225 comprising photonic band-gap structures or photonic lattices
• CPC Class Codes: H01S 5/11 Comprising a photonic bandgap structure

Abstract

At least one exemplary embodiment is directed to a method for fabricating a three-dimensional photonic crystal. In the method for fabricating the three-dimensional photonic crystal, a plurality of layers can be defined as one unit, and the total thickness of the one unit can be controlled such that an average layer-thickness of the plurality of layers in the one unit is about equal to the ideal layer-thickness so that a photonic band-gap occurs in a desired wavelength region.

Claims

1. A method for fabricating a three-dimensional photonic crystal by stacking a plurality of layers including a refractive index periodic structure, the method comprising:

forming a laminated product by stacking layers of which number is smaller, by one, than the number of layers constituting a laminated structure of one unit

measuring a total layer-thickness of the laminated product; and

stacking a top layer of the laminated structure of the one unit on the laminated product based on a result of comparison between the total layer-thickness of the laminated product and a total layer-thickness of layers of which number is smaller, by one, than the number of layers of which total layer-thickness is calculated such that a photonic band-gap occurs in a desired wavelength region.

2. The method for fabricating a three-dimensional photonic crystal according to claim 1, wherein the number of the layers constituting the one unit is equal to an integral multiple of the number of the layers constituting a fundamental period of the three-dimensional photonic crystal.

3. The method for fabricating a three-dimensional photonic crystal according to claim 1, wherein a plurality of the laminated structures of the one unit are collectively formed on a substrate.

4. A functional element comprising a three-dimensional photonic crystal fabricated by the method according to claim 1, wherein the three-dimensional photonic crystal comprises a linear periodic defect part that functions as a waveguide

5. A functional element comprising a three-dimensional photonic crystal fabricated by the method according to claim 1, wherein the three-dimensional photonic crystal comprises a periodic defect part that functions as a resonator.

6. A light-emitting element which comprises the functional element according to claim 5 comprising an active medium having a light-emitting function in the resonator and comprises an excitation means for exciting the active medium.

7. The light-emitting element according to claim 6, wherein the light-emitting element is a laser.