WO2004023180B1 - Wavelength separation devices incorporating multi-barrier photonic heterostructures - Google Patents
Wavelength separation devices incorporating multi-barrier photonic heterostructuresInfo
- Publication number
- WO2004023180B1 WO2004023180B1 PCT/US2003/028330 US0328330W WO2004023180B1 WO 2004023180 B1 WO2004023180 B1 WO 2004023180B1 US 0328330 W US0328330 W US 0328330W WO 2004023180 B1 WO2004023180 B1 WO 2004023180B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical
- bandgap
- heterostructure
- matrix
- inclusions
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/12007—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind forming wavelength selective elements, e.g. multiplexer, demultiplexer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
- G02B6/1225—Basic optical elements, e.g. light-guiding paths comprising photonic band-gap structures or photonic lattices
Abstract
A wavelength separation device is provided comprising a plurality of optical heterostructures. The optical heterostructures are characterized by distinct transmission bandwidths. Each of the plurality of optical heterostructures comprises a first bandgap region (A) and a second bandgap region (B) defined in a matrix of the optical heterostructure. The first bandgap region defines a first optical bandgap of the optical heterostructure. The second bandgap region defines a second optical bandgap of the optical heterostructure. The first optical bandgap of the optical heterostructure is centered at a different wavelength than the second optical bandgap of the optical heterostructure such that one of the transmission bandwidths is defined between the first and second optical bandgaps.
Claims
1. An optical heterostructure comprising: a matrix having an index of refraction; a first bandgap region defined in said matrix; and a second bandgap region defined in said matrix, wherein said first bandgap region is characterized by a periodic arrangement of inclusions in said matrix, said inclusions of said first bandgap region have an index of refraction substantially different than said index of refraction of said matrix, said second bandgap region is characterized by a periodic arrangement of inclusions in said matrix, said inclusions of said second bandgap region have an index of refraction substantially different than said index of refraction of said matrix, said first and second bandgap regions alternate in succession along a primary dimension of optical propagation of said heterostructure device to define a succession including at least one bandgap region of said first type interposed between a pair of bandgap regions of said second type, said first bandgap region defines a first optical bandgap of said optical heterostructure, said second bandgap region defines a second optical bandgap of said optical heterostructure, and a spacing between said band gap regions of said second type created by said interposition of said first band gap region there between is such that said first optical bandgap is centered at a different wavelength than said second optical bandgap and such that a transmission bandwidth is defined between said first and second optical bandgaps.
2. An optical heterostructure comprising: a matrix having an index of refraction; a first bandgap region defined in said matrix; and a second bandgap region defined in said matrix, wherein said first and second bandgap regions alternate in succession along a primary dimension of optical propagation of said heterostructure device, said first and second bandgap regions further alternate along a dimension orthogonal to said primary dimension of optical propagation of said heterostructure device, said first bandgap region is characterized by a periodic arrangement of first inclusions in said matrix, said periodic arrangement of said first inclusions in said matrix define a first optical bandgap of said optical heterostructure, said second bandgap region is characterized by a periodic arrangement of second inclusions in said matrix, said periodic arrangement of said second inclusions in said matrix define a second optical bandgap of said optical heterostructure, said first and second inclusions have an index of refraction substantially different than said index of refraction of said matrix, said first optical bandgap is centered at a different wavelength than said second optical bandgap, and a transmission bandwidth is defined between said first and second optical bandgaps.
3. An optical heterostructure as claimed in claim 2 wherein said first and second bandgap regions alternate along a primary dimension of optical propagation of said heterostructure device to define a plurality of first bandgap regions and a plurality of second bandgap regions. 21
4. An optical heterostructure as claimed in claim 1 wherein: said optical heterostructure further comprises at least one additional bandgap region defined in said matrix; said additional bandgap region is characterized by a periodic arrangement of additional inclusions in said matrix; said periodic arrangement of said additional inclusions in said matrix define at least one additional optical bandgap of said optical heterostructure; said additional inclusions have an index of refraction substantially different than said index of refraction of said matrix; and said additional optical bandgap is centered at a different wavelength than said first and second optical bandgaps.
5. An optical heterostructure as claimed in claim 1 wherein said wavelength difference in said first and second optical bandgaps is attributable to a difference in respective geometries of said first and second inclusions, respective periodicities of said first and second inclusions, respective compositions of said first and second inclusions, and combinations thereof.
6. An optical heterostructure as claimed in claim 1 wherein said matrix comprises a dopant.
7. An optical heterostructure as claimed in claim 6 wherein said dopant comprises an optically active material.
8. A wavelength separation device comprising a plurality of optical heterostructures characterized by distinct transmission bandwidths, wherein: a first bandgap region and a second bandgap region of a first optical heterostructure are defined in a matrix of said first optical heterostructure; said first and second bandgap regions of said first optical heterostructure alternate in succession along a primary dimension of optical propagation of said heterostructure device; said first bandgap region of said first optical heterostructure defines a first optical bandgap of said first optical heterostructure; 22
said first bandgap region of said first optical heterostructure is characterized by a periodic arrangement of inclusions in said matrix; said inclusions of said first bandgap region of said first optical heterostructure have an index of refraction substantially different than said index of refraction of said matrix; said second bandgap region of said first optical heterostructure defines a second optical bandgap of said first optical heterostructure; said second bandgap region of said first optical heterostructure is characterized by a periodic arrangement of inclusions in said matrix; said inclusions of said second bandgap region of said first optical heterostructure have an index of refraction substantially different than said index of refraction of said matrix; said first optical bandgap of said first optical heterostructure is centered at a different wavelength than said second optical bandgap of said first optical heterostructure such that one of said distinct transmission bandwidths is defined between said first and second optical bandgaps of said first optical heterostructure; a first bandgap region and a second bandgap region of an additional optical heterostructure are defined in a matrix of said additional optical heterostructure; said first and second bandgap regions of said additional optical heterostructure alternate in succession along a primary dimension of optical propagation of said heterostructure device; said first bandgap region of said additional optical heterostructure defines a first optical bandgap of said additional optical heterostructure; said first bandgap region of said additional optical heterostructure is characterized by a periodic arrangement of inclusions in said matrix; said inclusions of said first bandgap region of said additional optical heterostructure have an index of refraction substantially different than said index of refraction of said matrix; said second bandgap region of said additional optical heterostructure defines a second optical bandgap of said additional optical heterostructure; said second bandgap region of said first optical heterostructure is characterized by a periodic arrangement of inclusions in said matrix; said inclusions of said second bandgap region of said first optical heterostructure have an index of refraction substantially different than said index of refraction of said matrix; and 23
said first optical bandgap of said additional optical heterostructure is centered at a different wavelength than said second optical bandgap of said additional optical heterostructure such that an additional one of said distinct transmission bandwidths is defined between said first and second optical bandgaps of said additional optical heterostructure.
9. A wavelength separation device as claimed in claim 8 wherein said first optical heterostructure and second additional optical heterostructure are separated by a zero bandwidth region.
10. A wavelength separation device as claimed in claim 8 wherein: said wavelength separation device comprises an input face and an output face; said first and said additional optical heterostructure are arranged between said input face and said output face; said first optical heterostructure defines a first transmission bandwidth output at said output face; and said additional optical heterostructure defines an additional transmission bandwidth output at said output face.
11. A wavelength separation device as claimed in claim 8 wherein at least one of said first and second bandgap regions of said first and additional optical heterostructures is characterized by a periodic arrangement of inclusions in said matrix.
12. A wavelength separation device as claimed in claim 8 wherein at least one of said first and second bandgap regions of said first and additional optical heterostructures is characterized by an absence of a periodic arrangement of inclusions in said matrix.
13. A wavelength separation device as claimed in claim 8 wherein distinct transmission bandwidths of said first optical heterostructure and said additional optical heterostructure are attributable to a variance in respective spacing magnitudes Lj, L2 between band gap regions of said second type in said first optical heterostructure and band gap regions of said second type in said additional optical heterostructure. 24
14. A wavelength separation device as claimed in claim 13 wherein said respective spacing magnitudes Li, L2 are between about 0.5μm and about 5μm.
15. A wavelength separation device as claimed in claim 8 wherein: said first bandgap region of at least one of said optical heterostructures is characterized by a periodic arrangement of first inclusions in said matrix; and said second bandgap region of at least one of said optical heterostructures is characterized by a periodic arrangement of second inclusions in said matrix.
16. A wavelength separation device as claimed in claim 15 wherein a distinct transmission bandwidth of at least one of said optical heterostructures is attributable to variations in said first and second inclusions of said optical heterostructure.
17. A wavelength separation device as claimed in claim 8 wherein said first and second bandgap regions of at least one of said optical heterostructures alternate in succession along a primary dimension of optical propagation of said wavelength separation device to define a succession including at least one bandgap region of said first type interposed between a pair of bandgap regions of said second type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2003270490A AU2003270490A1 (en) | 2002-09-09 | 2003-09-09 | Wavelength separation devices incorporating multi-barrier photonic heterostructures |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US40933402P | 2002-09-09 | 2002-09-09 | |
| US60/409,334 | 2002-09-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2004023180A1 WO2004023180A1 (en) | 2004-03-18 |
| WO2004023180B1 true WO2004023180B1 (en) | 2004-05-13 |
Family
ID=31978745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2003/028330 WO2004023180A1 (en) | 2002-09-09 | 2003-09-09 | Wavelength separation devices incorporating multi-barrier photonic heterostructures |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU2003270490A1 (en) |
| WO (1) | WO2004023180A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5748057A (en) * | 1996-06-03 | 1998-05-05 | Hughes Electronics | Photonic bandgap crystal frequency multiplexers and a pulse blanking filter for use therewith |
| DE19720784A1 (en) * | 1997-05-17 | 1998-11-26 | Deutsche Telekom Ag | Integrated optical circuit |
| JP3456143B2 (en) * | 1998-05-01 | 2003-10-14 | 信越半導体株式会社 | Laminated materials and optical functional devices |
| GB0008546D0 (en) * | 2000-04-06 | 2000-05-24 | Btg Int Ltd | Optoelectronic devices |
-
2003
- 2003-09-09 AU AU2003270490A patent/AU2003270490A1/en not_active Abandoned
- 2003-09-09 WO PCT/US2003/028330 patent/WO2004023180A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003270490A1 (en) | 2004-03-29 |
| WO2004023180A1 (en) | 2004-03-18 |
| AU2003270490A8 (en) | 2004-03-29 |
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