WO2004081627A1 - フォトニック結晶光導波路への光入射方法およびその構造 - Google Patents
フォトニック結晶光導波路への光入射方法およびその構造 Download PDFInfo
- Publication number
- WO2004081627A1 WO2004081627A1 PCT/JP2004/003084 JP2004003084W WO2004081627A1 WO 2004081627 A1 WO2004081627 A1 WO 2004081627A1 JP 2004003084 W JP2004003084 W JP 2004003084W WO 2004081627 A1 WO2004081627 A1 WO 2004081627A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- photonic crystal
- optical waveguide
- light
- incident
- waveguide
- 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
- G02B6/122—Basic optical elements, e.g. light-guiding paths
- G02B6/1228—Tapered waveguides, e.g. integrated spot-size transformers
-
- 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
Definitions
- the present invention relates to a technique for injecting light into a photonic crystal, and more particularly to a method for efficiently injecting light into an optical waveguide formed inside the photonic crystal and a specific structure thereof.
- a photonic crystal periodically arranges two or more substances with different refractive indices in one, two, or three dimensions on the order of the wavelength of light (usually 0.3 to 0.7 ⁇ ). It is something.
- This photonic crystal has a strong light confinement effect due to the photonic bandgap, and is expected to be applied to various optical elements and micro-optical circuits using this light confinement effect. It is also known that an optical waveguide can be formed inside a photonic crystal by introducing a linear defect into the photonic crystal.
- Non-Patent Document 1 M. Tokushima et al., Electronics Letters, 2001, Vol. 37, No. 24
- the transmission loss was as large as 40 to 50 dB. .
- An object of the present invention is to provide a method for efficiently injecting light into a photonic crystal or an optical waveguide formed inside the photonic crystal, and to provide a specific structure therefor.
- the photonic crystal in a photonic crystal obtained by periodically arranging two or more kinds of substances having different refractive indices one-dimensionally, two-dimensionally, or three-dimensionally, the photonic crystal It has a structure (waveguide) that can guide light inside, in order to make light incident on the waveguide with high efficiency from the outside
- the photonic crystal in a photonic crystal obtained by periodically arranging two or more kinds of substances having different refractive indexes in one-dimensional, two-dimensional, or three-dimensional manner, the photonic crystal It has a structure capable of guiding light inside (waveguide), and light inside the optical waveguide formed inside the photonic crystal in order to make light incident on the waveguide from outside with high efficiency. And the wave number vector of the incident light outside the photonic crystal can be made to coincide with the wave number vector of the photonic crystal optical waveguide.
- the photonic crystal in a photonic crystal obtained by periodically arranging two or more kinds of substances having different refractive indices one-dimensionally, two-dimensionally, or three-dimensionally, the photonic crystal It has a structure capable of guiding light inside (waveguide), and light inside the optical waveguide formed inside the photonic crystal in order to make light incident on the waveguide from outside with high efficiency.
- a method of injecting light into a photonic crystal optical waveguide characterized in that the ratio of the electric field and the magnetic field intensity of the optical waveguide and the ratio of the electric field and the magnetic field intensity of the incident light outside the photonic crystal match.
- the photonic crystal light guide according to the third aspect.
- the ratio of the electric field to the magnetic field intensity of the light at the incident end face of the optical waveguide formed inside the photonic crystal, and the intensity of the electric field and the magnetic field of the incident light outside the photonic crystal can be obtained.
- the light incident end face of the optical waveguide formed inside the photonic crystal is The distribution shape of the ratio between the intensity of the electric field and the intensity of the magnetic field of the light and the distribution shape of the ratio of the intensity of the electric field and the intensity of the magnetic field of the incident light outside the photonic crystal are matched with each other.
- the method of light incidence can be obtained.
- the light incident on the light incident end face of the optical waveguide formed inside the photonic crystal is provided.
- the ratio between the electric field and the magnetic field strength of the incident light outside the photonic crystal matches when the ratio of the electric field and the magnetic field strength is 1 or less, as a value normalized by the electric field and the magnetic field strength ratio in a vacuum.
- a method of making light incident on the photonic crystal optical waveguide can be obtained.
- the first phantom of the photonic band in the dispersion curve of the photonic crystal is used.
- the method of making light incident on the photonic crystal optical waveguide is characterized in that the ratio of the intensity of the electric field to the intensity of the magnetic field of the incident light outside the photonic crystal is matched.
- the waveguide at the incident end face of the optical waveguide formed inside the photonic crystal is provided. A method of making light incident on a photonic crystal optical waveguide characterized by matching the light intensity distribution of a mode with the light intensity distribution of incident light outside the photonic crystal can be obtained.
- a linear defect is introduced into a photonic crystal as a highly efficient light incident structure on a photonic crystal optical waveguide that realizes the method according to the first to fifth aspects.
- a linear optical waveguide formed by the method described above is joined to a channel waveguide made of the same material as the line defect portion. It is possible to obtain a structure in which light enters the nick crystal optical waveguide.
- a linear defect is introduced into a photonic crystal as a highly efficient light incident structure on a photonic crystal optical waveguide for realizing the method according to the first to fifth and eighth aspects.
- the line-shaped optical waveguide formed as described above is joined to a channel waveguide made of the same material as the line-defect portion, and further, a junction portion between the channel waveguide and the photonic crystal line-defect optical waveguide,
- a light incident structure on a photonic crystal optical waveguide characterized by having a channel waveguide provided with a junction structure satisfying the conditions defined in the first to fifth and eighth aspects can be obtained. .
- a linear defect is introduced into a photonic crystal as a highly efficient light incident structure to a photonic crystal optical waveguide for realizing the method according to the first to fifth and eighth aspects.
- a channel waveguide made of the same material as that of the line defect portion.
- the line defect optical waveguide is formed at the junction between the channel waveguide and the photonic crystal line defect optical waveguide.
- the photonic crystal according to the first aspect characterized in that the photonic crystal has a channel waveguide provided with a junction structure formed of a material having a different refractive index from both the channel waveguide and the photonic crystal. It is possible to obtain a structure in which light enters the optical waveguide.
- a linear defect is formed inside the photonic crystal.
- a channel waveguide made of the same material as that of the line defect portion is bonded to the channel waveguide and a photonic crystal line defect optical waveguide.
- a light incidence structure to a photonic crystal optical waveguide is provided, which has a channel waveguide provided in a wedge shape. Can be.
- Figure 1 illustrates the concept of wave number matching between the photonic crystal optical waveguide and the outside FIG.
- FIG. 2 is a diagram showing a state of wave number matching on a photonic band diagram.
- FIG. 3 is a diagram showing a photonic crystal optical waveguide interface.
- FIG. 4 is a diagram for explaining a method of making the ratio of the electric field and the magnetic field equal between the photonic crystal optical waveguide and the outside.
- FIG. 5 is a diagram showing the results of FDTD calculation of the distribution of the ratio of the electric field and the magnetic field.
- FIG. 6 is a diagram showing a calculation result of a distribution of a ratio of an electric field and a magnetic field of a photonic crystal by a plane expansion method.
- FIG. 7 is a diagram for explaining a method of matching the distribution of the ratio of electric field and magnetic field between the photonic crystal optical waveguide and the outside.
- FIG. 8 is a diagram for explaining a method for matching the light intensity distribution between the photonic crystal optical waveguide and the outside.
- FIG. 9 is a diagram showing an interface structure between the photonic crystal optical waveguide and the outside.
- FIG. 10 is a diagram showing an interface structure between a photonic crystal optical waveguide having a wedge shape and the outside.
- FIG. 11 is a diagram showing the coupling efficiency with a photonic crystal optical waveguide.
- FIG. 12 is a diagram showing the results of FDTD calculation of the distribution of the ratio of the electric field to the magnetic field at the junction between the tonic crystal optical waveguide and the outside.
- Figure 1 shows a conceptual diagram of the method.
- the light incidence efficiency increases only when the light wave number in the optical waveguide formed inside the photonic crystal and the wave number of the incident light from the outside match. That is, as shown in Fig.
- the wave number kl of the guided mode of the optical waveguide in the photonic crystal and the wave number kO of the incident light outside the photonic crystal are made to match the wave number k on the photonic band diagram (wave number (Matching), the incidence efficiency increases.
- the vertical axis represents the frequency ⁇
- the horizontal axis represents the wave number k.
- the wave number of light is equivalent to the momentum in terms of the equation of motion. That is, passing the wave number k from the medium 1 to the medium 2 without change is equivalent to a case where a certain substance tries to pass from the medium 1 to the medium 2 and can pass with the momentum preserved. If the momentum is preserved, the substance can pass from the medium 1 to the medium 2 without changing the speed or the traveling direction of the substance.
- the material constituting the optical waveguide portion in the photonic crystal is Si, which has a large refractive index, and when light is incident from air or vacuum, the wave numbers on the photonic band diagram should match.
- the refractive index of the medium that allows light to enter the photonic crystal is set to be equal to the refractive index of the material constituting the optical waveguide portion in the photonic crystal.
- Figure 3 illustrates this method. In other words, instead of directing light from the air into the photonic crystal optical waveguide, at least an intermediate optical waveguide (for example, Si) made of a material (for example, Si) having a small refractive index difference from the optical waveguide portion in the photonic crystal.
- Figure 4 illustrates this method. Match the ratio of the electric field to the magnetic field (Ex / Hy) of the waveguide mode light of the optical waveguide in the photonic crystal and the ratio of the electric field to the magnetic field (Ex / Hy) of the incident light outside the photonic crystal. .
- This method is basically the same as the impedance matching often used in electric circuits.
- the impedance is defined by the ratio of voltage to current (V / I), whereas in optical waveguides, it is defined by the ratio of electric field to magnetic field (E / H). The points are different.
- the ratio of the electric field and the magnetic field strength of the guided mode at a specific frequency in the Si channel optical waveguide is constant regardless of the location, but the electric field and the magnetic field of the guided mode in the photonic crystal optical waveguide are constant. It is shown that the intensity ratio greatly varies depending on the position of the cut surface of the photonic crystal.
- the cut surface of the photonic crystal is a surface equivalent to A
- the ratio of the electric field to the magnetic field strength is large at the center of the cross section of the optical waveguide, but the cut surface is In the case of a plane equivalent to B, it becomes larger at both ends of the optical waveguide section. Therefore, when joining both a Si channel optical waveguide and a photonic crystal optical waveguide, it is important to join them so that the ratio between the electric field and the magnetic field strengths at the junction is the same to maximize the coupling efficiency. It becomes.
- the intensity ratio between the electric field and the magnetic field of the photonic crystal optical waveguide is a positive value and is 1 or more. It is desirable to be below. This is for the following reasons.
- Non-Patent Document 2 Appl. Phys. Lett. 82, pp. 7-9 (2003) by J. Ushida et al.
- the reflectance of an arbitrary one-dimensional photonic crystal is analytically derived.
- the reciprocal of the intensity ratio between the electric field and the magnetic field on the surface of the photonic crystal normalized by the intensity ratio between the electric field and the magnetic field in a vacuum, may correspond to the refractive index when considering the Fresnel reflection of the photonic crystal. Understand.
- the anti-reflection coating on the photonic crystal is possible whenever the value is greater than 1.
- the possibility of anti-reflection coating means that the coupling loss of light to the photonic crystal can be reduced to zero in principle.
- the force is smaller than S1
- there is no medium that has a refractive index of less than 1 in a vacuum and it is very unlikely that the incident loss of light would be zero in such a case.
- FIG. 6 shows the electric and magnetic field strengths at a cross section of the photonic crystal.
- ⁇ is 1 or less
- FIG. A method in which the distribution of the intensity ratio of the electric field and the magnetic field at the junction of the photonic crystal optical waveguide is described.
- the ratio between the electric field and the magnetic field strength at the junction end face of the photonic crystal optical waveguide between different waveguides coincides with each other. Furthermore, if the distributions of the electric field and the magnetic field intensity at the junction end face of the photonic crystal optical waveguide are matched, the ratio of the electric field and the magnetic field intensity at the junction interface will be the same at any part of the junction cross section. Can be further reduced.
- a method according to a fifth embodiment of the present invention will be described.
- the right side of Fig. 6 shows a photo of the ratio of the electric field to the magnetic field intensity from the first to the higher order band of the photo Yuk band for the band A of the coupling mode where the light is coupled to the optical waveguide.
- FIG. 4 is a diagram showing a distribution in a nick crystal cross section. 4th and 5th bread
- the distribution of the electric and magnetic fields varies greatly in the plane of the optical waveguide, but the distribution is relatively small in the first and second bands.
- the optical waveguide modes formed in the photonic crystal band in the optical waveguide modes accompanying the band near higher-order bands such as the fourth and fifth bands, the strengths of the electric field and the magnetic field in the plane of the optical waveguide
- the distribution of the electric and magnetic field in the plane of the optical waveguide changes relatively slowly and becomes small. There are various frequencies.
- the waveguide mode of the optical waveguide in the photonic crystal existing from the first band to the vicinity of the second band of the photonic crystal, the intensity ratio of the electric field and the magnetic field to the Si channel optical waveguide can be reduced.
- the distribution can be matched.
- the light intensity distribution of the guided mode of the optical waveguide formed inside the photonic crystal and the light intensity distribution of the incident light outside the photonic crystal as the sixth embodiment of the present invention are matched.
- the method will be described.
- Fig. 8 shows this state.
- This structure is effective when the electric field distribution of the waveguide mode of the optical waveguide in the photonic crystal is relatively close to the Gaussian distribution.
- the intensity distribution of light in the basic mode in the channel waveguide is close to a Gaussian distribution
- the light intensity distribution of the guided mode in the photonic crystal optical waveguide is close to the Gaussian distribution
- Light can be efficiently incident from the channel waveguide.
- the left side of Fig. 6 shows a photonic band diagram in the ⁇ direction for the TM polarized component (electric field is parallel to the rod) in this photonic crystal.
- Symbols A and B shown in each band in FIG. 2 indicate a coupling mode (A) and a non-coupling mode (B) that can couple light from outside the photonic crystal.
- the value of the ratio of the intensity of the electric field to the intensity of the magnetic field on the surface is a real number.
- the spatial distribution of the ratio of the electric field and magnetic field strength of Band 1 and Band 2 changes more slowly than the spatial distribution of Band 4 and Band 5, and the value is positive and 1 or less. is there.
- the ratio of the electric field and magnetic field strengths normalized by the ratio of the electric field and magnetic field strengths in a vacuum, is 1 or less and the spatial distribution is flat, approximately one-dimensional electric and magnetic field strengths
- the junction loss can be reduced by a method for matching the ratios, that is, a method similar to that of the third embodiment of the present invention. Therefore, it can be seen that Band 1 and Band 2 can approximately match the ratio of the electric field and the magnetic field strength by providing a uniform medium film on the surface.
- FIG. 5 shows the normalized distribution of the ratio of the electric field to the magnetic field strength for the line defect mode in the first band gap.
- the ratio of the intensity of the electric field to the intensity of the magnetic field is 1 or less.
- the photonic crystal has a structure in which round holes with a diameter of about 0.3 im are formed in a triangular lattice in a Si layer with a thickness of about 0.2 to 0.3 ⁇ ⁇ , and the lattice period is about 0. It is 45 ⁇ .
- the optical waveguide is formed by removing one line defect in the ⁇ ⁇ - ⁇ direction, so that the medium of the optical waveguide portion is Si (refractive index: about 3.5).
- the upper and lower sides of the Si layer may be Si02 or air.
- a channel waveguide made of Si of the same material as the photonic crystal optical waveguide is used as a method for efficiently entering light into a line-defect optical waveguide provided in a slab-type photonic crystal having a triangular lattice of air holes.
- the method of using the wave path as an interface is effective.
- the incidence efficiency on the photonic crystal optical waveguide is significantly higher than when the light is directly incident from the air (the coupling loss in this case is 10 dB or more). Can be improved.
- the coupling loss between the Si channel optical waveguide and the photonic crystal optical waveguide can be reduced to about 2 dB, and the coupling loss from the air to the Si channel optical waveguide can be reduced to about 1 dB or less.
- the coupling loss can be suppressed to 3 dB or less as a whole.
- the effect of the interface shown here is to play the role of matching the wave number described above or the ratio of the electric field to the magnetic field.
- FIG. 9 shows an example of a channel waveguide interface made of Si as a ninth embodiment of the present invention.
- the photonic crystal has a structure in which round holes with a diameter of about 0.3 ⁇ are formed in a triangular lattice in a Si layer with a thickness of about 0.2 to 0.3 ⁇ ra. It is about 0.45 ⁇ .
- the optical waveguide is formed by removing one line defect in the ⁇ - ⁇ direction. Therefore, the medium of the optical waveguide is Si (refractive index: about 3.5).
- the upper and lower portions of the Si layer may be Si02 or air.
- a photonic crystal optical waveguide portion is formed between channel waveguides made of Si. It is effective to use, as an interface, a junction structure using a substance or a structure whose refractive index has an intermediate value between the two. By using such a bonding structure, photonic coupling The incidence efficiency to the crystal optical waveguide can be greatly improved compared to the case of direct incidence from the air (the coupling loss in this case is 10 dB or more).
- FIG. 10 shows a structure capable of matching the distribution of the intensity ratio between the electric field and the magnetic field in the waveguide mode of the photonic crystal optical waveguide made of Si and the waveguide mode of the Si channel optical waveguide.
- Wedge guide Namijicho is 0. 3 ⁇ ⁇ , the width of photonic crystal side bonding surface 1. a 26 ⁇ ⁇ .
- FIG. 11 shows the wavelength dependence of the light transmittance at the junction between the Si channel optical waveguide and the photonic crystal optical waveguide.
- the optical coupling loss is 0.33 dB to 0.14 at a light wavelength of 1.60 ⁇ , and 1.2 dB to 0.14 at 1.63 ⁇ m. It can be seen that the improvement was significantly improved up to 35.
- the coupling loss is improved as shown in Fig. 11, but the length of the wedge-shaped waveguide is 0.6 to 0.7 111 Then, the coupling loss became rather large.
- FIG. 12 shows an example in which the distribution of the intensity ratio between the electric field and the magnetic field is compared between the case where the interface is not provided and the case where the interface is provided at the junction.
- the distribution of the intensity ratio between the electric field and the magnetic field if there is no interface, there is a dark part in the photonic crystal that indicates a high value area, while the wedge-shaped waveguide length 0.3
- the interface for ⁇ ⁇ is provided, the area of such a dark part is reduced, and the electric field and the magnetic field are distributed in the same shade from the Si channel optical waveguide to the photonic crystal. You can see that. This indicates that the value of the ratio of the electric field to the magnetic field intensity of the photonic crystal optical waveguide near the junction is reduced as an effect of the interface.
- the waveguide length of the wedge-shaped interface which increases the coupling loss described above, is 0.6 to 0.7111, the electric field and the magnetic field of the photonic crystal optical waveguide at the interface and near the junction are considered.
- the ratio of the electric field and the magnetic field intensity distribution is well matched. Had not shown.
- the present invention provides a technique for efficiently entering light into a photonic crystal optical waveguide, and the technique can be applied to any photonic crystal optical element.
- the description has been given by taking as an example the case of incidence on a so-called line-defect optical waveguide in which a linear defect has been introduced into a photonic crystal, but the form of the optical waveguide is a line-defect type optical waveguide.
- An optical waveguide of a type that guides light with a difference in refractive index like a conventional optical waveguide may be used.
- the above-mentioned method and structure can be applied even if the optical waveguide is not intentionally formed in the photonic crystal as long as the optical waveguide has a structure capable of guiding light.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Power Engineering (AREA)
- Optical Integrated Circuits (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005503537A JPWO2004081627A1 (ja) | 2003-03-14 | 2004-03-10 | フォトニック結晶光導波路への光入射方法およびその構造 |
US11/224,320 US7778509B2 (en) | 2003-03-14 | 2005-09-13 | Method for incidence of light into a photonic crystal optical waveguide and structure thereof |
US12/320,428 US20090142018A1 (en) | 2003-03-14 | 2009-01-26 | Method for incidence of light into a photonic crystal optical waveguide |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-070474 | 2003-03-14 | ||
JP2003070474 | 2003-03-14 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/224,320 Continuation US7778509B2 (en) | 2003-03-14 | 2005-09-13 | Method for incidence of light into a photonic crystal optical waveguide and structure thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004081627A1 true WO2004081627A1 (ja) | 2004-09-23 |
Family
ID=32984655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/003084 WO2004081627A1 (ja) | 2003-03-14 | 2004-03-10 | フォトニック結晶光導波路への光入射方法およびその構造 |
Country Status (4)
Country | Link |
---|---|
US (2) | US7778509B2 (ja) |
JP (1) | JPWO2004081627A1 (ja) |
CN (1) | CN1761898A (ja) |
WO (1) | WO2004081627A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8078021B2 (en) | 2006-12-27 | 2011-12-13 | Nec Corporation | Waveguide connecting structure |
JP2014197837A (ja) * | 2013-03-04 | 2014-10-16 | 国立大学法人大阪大学 | テラヘルツ波コネクタおよびテラヘルツ波集積回路、および導波路およびアンテナ構造 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4793660B2 (ja) * | 2005-12-27 | 2011-10-12 | 日本電気株式会社 | 導波路の結合構造 |
FR2933780B1 (fr) * | 2008-07-11 | 2010-12-17 | Thales Sa | Circuit a cristal photonique comportant un adaptateur de modes guides et systeme optique comportant ledit circuit couple avec une fibre optique |
KR100953578B1 (ko) * | 2009-08-05 | 2010-04-21 | 주식회사 나노브릭 | 광결정성을 이용한 인쇄 매체, 인쇄 방법 및 인쇄 장치 |
US9086583B1 (en) * | 2012-07-18 | 2015-07-21 | Wei Jiang | Systems and methods for controlling and measuring modes possessing even and odd symmetry in a photonic crystal waveguide |
US11533101B1 (en) * | 2022-02-08 | 2022-12-20 | Quantum Valley Ideas Laboratories | Communicating information using photonic crystal masers |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020191933A1 (en) * | 2001-06-07 | 2002-12-19 | Nec Corporation | Waveguide |
JP2004101740A (ja) * | 2002-09-06 | 2004-04-02 | Nippon Telegr & Teleph Corp <Ntt> | フォトニック結晶導波路 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7082235B2 (en) * | 2001-09-10 | 2006-07-25 | California Institute Of Technology | Structure and method for coupling light between dissimilar waveguides |
-
2004
- 2004-03-10 CN CNA2004800069158A patent/CN1761898A/zh active Pending
- 2004-03-10 WO PCT/JP2004/003084 patent/WO2004081627A1/ja active Application Filing
- 2004-03-10 JP JP2005503537A patent/JPWO2004081627A1/ja not_active Withdrawn
-
2005
- 2005-09-13 US US11/224,320 patent/US7778509B2/en not_active Expired - Fee Related
-
2009
- 2009-01-26 US US12/320,428 patent/US20090142018A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020191933A1 (en) * | 2001-06-07 | 2002-12-19 | Nec Corporation | Waveguide |
JP2004101740A (ja) * | 2002-09-06 | 2004-04-02 | Nippon Telegr & Teleph Corp <Ntt> | フォトニック結晶導波路 |
Non-Patent Citations (8)
Title |
---|
GOMYO AKIKO ET AL, IEICE TRANSACTIONS ON ELECTRONICS, vol. E87-C, no. 3, 1 March 2004 (2004-03-01), pages 328 - 335, XP001190108 * |
GOMYO AKIKO ET AL.: "25p-YA-7 surabu-gata photonic kesshosen kekkan hikari doharo heno hikari nyusha kozo no kento", 2002 NEN (HEISEI 14 NEN), SHUNKI DAI 63 KAI OYO BUTSURIGAKU GAKUJUTSU KOENKAI KOEN YOKOSHU DAI 3 BUNSATSU, 24 September 2002 (2002-09-24), pages 912, XP002982507 * |
GOMYO AKIKO ET AL.: "28p-YN-10 surabu-gata photonic kesshosen kekkan hikari doharo heno hikari nyusha kozo no kento(2)", 2003 NEN (HEISEI 15 NEN), SHUNKI DAI 50 KAI OYO BUTSURIGAKU KANKEI RENGO KOENKAI KOEN YOKOSHU DAI 3 BUNSATSU, 27 March 2003 (2003-03-27), pages 1133, XP002982506 * |
MIYAI EIJI ET AL, APPLIED PHYSICS LETTERS, vol. 81, no. 20, 11 November 2002 (2002-11-11), pages 3729 - 3731, XP002982502 * |
MIYAI EIJI ET AL.: "29p-L-5 2-jigen photonic kessho doharo to gaibu doharo tono ketsugo kaiseki", 2002 NEN (HEISEI 14 NEN) SHUNKI DAI 49 KAI OYO BUTSURIGAKU KANKEI RENGO KOENKAI KOEN YOKOSHU, DAI 3 BUNSATSU, 27 March 2002 (2002-03-27), pages 1038, XP002982501 * |
TOKUSHIMA MASATOSHI ET AL.: "28p-YN-12 photonic kesso doharo to channel doharo no kokoritsu setsuzoku joken", 2003 NEN (HEISEI 15 NEN), SHUNKI DAI 50 KAI OYO BUTSURIGAKU KANKEI RENGO KOENKAI KOEN YOKOSHU DAI 3 BUNSATSU, 27 March 2003 (2003-03-27), pages 1134, XP002982503 * |
USHIDA JUN ET AL.: "28a-YN-1 photonic kessho hyomen deno impedance seigo to hansha boshimaku sekkei riron", 2003 NEN (HEISEI 15 NEN), SHUNKI DAI 50 KAI OYO BUTSURIGAKU KANKEI RENGO KOENKAI KOEN YOKOSHU DAI 3 BUNSATSU, 27 March 2003 (2003-03-27), pages 1126, XP002982504 * |
USHIDA JUN ET AL.: "28a-YN-2 photonic kessho hyomen deno impedance seigo to hansha boshimaku sekkei riron II", 2003 NEN (HEISEI 15 NEN), SHUNKI DAI 50 KAI OYO BUTSURIGAKU KANKEI RENGO KOENKAI KOEN YOKOSHU DAI 3 BUNSATSU, 27 March 2003 (2003-03-27), pages 1127, XP002982505 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8078021B2 (en) | 2006-12-27 | 2011-12-13 | Nec Corporation | Waveguide connecting structure |
JP2014197837A (ja) * | 2013-03-04 | 2014-10-16 | 国立大学法人大阪大学 | テラヘルツ波コネクタおよびテラヘルツ波集積回路、および導波路およびアンテナ構造 |
Also Published As
Publication number | Publication date |
---|---|
US20090142018A1 (en) | 2009-06-04 |
CN1761898A (zh) | 2006-04-19 |
US20060039649A1 (en) | 2006-02-23 |
US7778509B2 (en) | 2010-08-17 |
JPWO2004081627A1 (ja) | 2006-06-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Mekis et al. | Tapered couplers for efficient interfacing between dielectric and photonic crystal waveguides | |
JP3349950B2 (ja) | 波長分波回路 | |
Koala et al. | Nanophotonics-inspired all-silicon waveguide platforms for terahertz integrated systems | |
Qing et al. | Enhancement of evanescent waves in waveguides using metamaterials of negative permittivity and permeability | |
WO2015050602A1 (en) | Integrated photonic devices based on waveguides patterned with optical antenna arrays | |
US7778509B2 (en) | Method for incidence of light into a photonic crystal optical waveguide and structure thereof | |
Awasthi et al. | Design of a tunable optical filter by using a one-dimensional ternary photonic band gap material | |
Fujisawa et al. | Time-domain beam propagation method for nonlinear optical propagation analysis and its application to photonic crystal circuits | |
Feng et al. | Transparent photonic band in metallodielectric nanostructures | |
KR100877710B1 (ko) | 표면 플라즈몬 이중 금속 광도파로 | |
Kassa-Baghdouche et al. | Optical properties of point-defect nanocavity implemented in planar photonic crystal with various low refractive index cladding materials | |
JPH06235843A (ja) | 光デバイス | |
EP2354822A1 (fr) | Coupleur optique intégré | |
Kawakami | Analytically solvable model of photonic crystal structures and novel phenomena | |
US20100150512A1 (en) | Waveguide for propagating radiation | |
Robinson | Photonic crystal ring resonator based optical filters for photonic integrated circuits | |
Wu et al. | Optical nonreciprocal transmission in an asymmetric silicon photonic crystal structure | |
KR101593790B1 (ko) | 입사광으로부터 광과 표면 플라즈몬 폴라리톤을 분리하는 광 플라즈몬 분리 장치 및 방법 | |
Lin et al. | Two-and three-dimensional photonic crystals built with VLSI tools | |
Pei et al. | The high-transmission photonic crystal heterostructure Y-branch waveguide operating at photonic band region | |
Tee et al. | Structure Tuned, High Transmission 180$^{\circ} $ Waveguide Bend in 2-D Planar Photonic Crystal | |
Pei et al. | The heterostructure photonic crystal waveguide splitter | |
WO2006073194A1 (ja) | 光導波路、光デバイス及び光通信装置 | |
Sharkawy et al. | Analysis and applications of photonic crystals coupled waveguide theory | |
Kim et al. | Controlling light propagation in optical waveguides using one dimensional phased antenna arrays |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005503537 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11224320 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20048069158 Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 11224320 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |