WO2002046824A2 - Commutateur optique integre, 2x2 voies - Google Patents
Commutateur optique integre, 2x2 voies Download PDFInfo
- Publication number
- WO2002046824A2 WO2002046824A2 PCT/FR2001/003676 FR0103676W WO0246824A2 WO 2002046824 A2 WO2002046824 A2 WO 2002046824A2 FR 0103676 W FR0103676 W FR 0103676W WO 0246824 A2 WO0246824 A2 WO 0246824A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- platform
- guide means
- optical guide
- optical
- end surfaces
- Prior art date
Links
Classifications
-
- 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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/3502—Optical coupling means having switching means involving direct waveguide displacement, e.g. cantilever type waveguide displacement involving waveguide bending, or displacing an interposed waveguide between stationary waveguides
- G02B6/3508—Lateral or transverse displacement of the whole waveguides, e.g. by varying the distance between opposed waveguide ends, or by mutual lateral displacement of opposed waveguide ends
-
- 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
- G02B2006/12133—Functions
- G02B2006/12145—Switch
-
- 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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/354—Switching arrangements, i.e. number of input/output ports and interconnection types
- G02B6/3544—2D constellations, i.e. with switching elements and switched beams located in a plane
- G02B6/3546—NxM switch, i.e. a regular array of switches elements of matrix type constellation
-
- 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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/3564—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details
- G02B6/3568—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details characterised by the actuating force
- G02B6/357—Electrostatic force
-
- 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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/3564—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details
- G02B6/3582—Housing means or package or arranging details of the switching elements, e.g. for thermal isolation
-
- 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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/35—Optical coupling means having switching means
- G02B6/3596—With planar waveguide arrangement, i.e. in a substrate, regardless if actuating mechanism is outside the substrate
Definitions
- the present invention relates to the field of optical wave transmission in optical guide structures.
- the patent FR-A-95 00 201 describes an opto-mechanical device with integrated optical guide means, which comprises a body and a movable platform placed between two parts of this body and connected to the latter by arms. Different arrangements are described. This document only specifies that the platform carries integrated optical micro-guides arranged so as to switch, when it is moved, a light wave arriving by an optical microguide from one of the parts of the body towards selectively two micro-guides optics of its other part.
- the object of the present invention is to improve the above opto-mechanical device so as to increase its capacities.
- the optical wave transmission device comprises a structure having optical guidance means, the structure comprising a body and a deformable part subjected to actuation means and having a platform placed between two parts of said body , said platform and said parts of said body having facing flanks sliding relative to one another under the effect of said actuating means.
- each part of said body comprises at least two optical guide means, the ends of which open onto said corresponding sides and said platform comprises at least four optical guide means, the ends of which open onto said corresponding sides.
- the movable part and the actuating means are arranged such that, in a first position of said platform, the end surfaces of a first and a third optical guide means of the platform are optically coupled with on the one hand the end surfaces of the optical guide means of one of the parts of said body and on the other hand the end surfaces of the other part of said body.
- the end surfaces of a second and a fourth optical guide means of the platform are optically coupled with on the one hand the end surfaces optical guide means of one of the parts of said body and on the other hand the end surfaces of the other part of said body, so that the optical guide means of the platform constitute an inverter.
- the ends of the first, second, third and fourth means for optical guidance of the platform are preferably arranged successively on one of the sides of this platform while the ends of its first, fourth, third and second means for optical guidance of the platform are arranged successively on the other side of this platform.
- the optical guide means of the platform are preferably integrated so that the second and fourth optical guide means cross once, that the third optical guide means crosses once the second and fourth means of optical guidance and that the first optical guidance means does not cross the others.
- the second and fourth optical guide means preferably extend by forming elongated S which intersect.
- said platform is preferably connected to said body by arms subjected to biasing means making it possible to deform them and to move this platform.
- the biasing means preferably comprise capacitive or inductive means delivering a biasing force of said arms under the effect of an electric control voltage and / or current.
- said sides of said parts of said body preferably carry layers either of a light-reflecting substance or of a light-absorbing substance, placed opposite the ends of said uncoupled optical guide means of said platform .
- said sides of said parts of said body and / or of said platform can advantageously be provided with at least one anti-reflection layer covering the end surfaces of said optical guide means, in particular a stack silicon nitride and silica.
- FIG. 1 shows a top view of an optical wave transmission device according to the present invention
- FIG. 1 shows a cross section along II-II of the optical wave transmission device of Figure 1.
- a device 1 for transmitting optical waves which comprises an integrated structure 2 for optical guidance with integrated optical micro-guides.
- the integrated structure 2 comprises a body 3 in which is formed a hollowed-out cavity 4 at the same time as a rectangular platform 5 is made, the corners of which are connected to the body 3 by four opposite longitudinal branches 6.
- the body 3 has two parts 7 and 8 spaced apart longitudinally, which have, in the cavity 4, opposite transverse sides 9 and 10 between which is the platform 5.
- This platform 5 has opposite transverse sides 11 and 12 which are located opposite and at short distances from the sides 9 and 10 so as to slide relative to each other when the platform 5 moves transversely by deformation of the arms 6 which carry it.
- the parts 7 and 8 of the body 2 respectively comprise two integrated optical micro-guides 13 and 14 and two integrated optical micro-guides 15 and 16, which are spaced transversely and which extend longitudinally, the transmission cores 13a and 15a of the micro optical guides 13 and 15 being aligned and the transmission cores 14a and 16a of the optical micro-guides 14 and 16 being aligned.
- the transmission hearts 13a and 14a on the one hand and the transmission hearts 15a and 16a on the other hand open respectively into the cavity 4 through the sides 9 and 10 of the parts 7 and 8 of the body 3, by surfaces corresponding transverse ends 13b, 14b, 15b and 16b.
- the platform 5 carries a first integrated micro-guide 17, a second integrated micro-guide 18, a third integrated micro-guide 19 and a fourth integrated optical micro-guide guide 20, which respectively have transmission cores 17a, 18a , 19a and 20a which open respectively, on either side of the platform 5, through its sides 11 and 12.
- the transmission cores 17a-20a are arranged so that their transverse end surfaces are arranged in the following manner.
- a first light wave can be transmitted between the transmission core 13a of the optical micro-guide 13 and the transmission core 15a of the optical micro-guide 15 via the transmission core 17a of the optical micro-guide 17, thanks to the optical coupling of their ends, and a second light wave can be transmitted between the transmission core 14a of the optical micro-guide 14 and the transmission core 16a of the optical micro-guide 16 via the heart of transmission 19a of the optical micro-guide 19, thanks to the optical coupling of their ends.
- a first light wave can be transmitted between the transmission core 13a of the optical micro-guide 13 and the transmission core 16a of the micro-guide 16 via the transmission core 18a of the optical micro-guide 18, thanks to the optical coupling of their ends, and a second light wave can be transmitted between the transmission core 14a of the optical micro-guide 14 and the transmission core 15 a of the optical micro-guide 15 via the transmission core 20a of the optical micro-guide 20, thanks to the optical coupling of their ends.
- the transmission core 17a of the optical micro-guide 17 extends longitudinally.
- the transmission cores 18a and 20a of the optical micro-guides 18 and 20 intersect once and extend in the form of elongated S, their end portions extending longitudinally.
- the transmission core 19a of the optical micro-guide 19 crosses once the transmission core 18a of the optical micro-guide 18 and once the transmission core 20a of the optical micro-guide 20.
- the transmission core 19a extends forming an elongated omega, its end portions extending longitudinally.
- angles between the transmission cores of the platform 5 are preferably adapted in order to prevent the transmitted light waves from being disturbed as little as possible.
- the transmission cores 17a, 18a, 19a and 20a have ends al, bl, cl and dl which succeed one another transversely.
- the ends a 1 and b 1 are in the vicinity of the end 13 b of the transmission core 13 a of the optical micro-guide 13 and the ends c 1 and d 1 are in the vicinity of the end 14 b of the transmission core 14 a of the optical microguide 14.
- the end a2 of the transmission core 17a, the end d2 of the transmission core 20a, the end c2 of the transmission core 19a and the end b2 of the transmission core 18a follow one another transversely.
- the end surfaces a2 and d2 are in the vicinity of the end surface 15b of the transmission core 15a of the optical micro-guide 15 and the end surfaces c2 and b2 are in the vicinity of the end surface 16b of the transmission core 16a of the optical micro-guide 16.
- the transmission cores carried by the platform 5 could be arranged, extend and intersect differently.
- the device 1 which has just been described constitutes an inverter.
- the platform 5 when the platform 5 is selectively placed at its two transverse positions mentioned above, light waves entering for example through the transmission cores 13a and 14a of the optical micro-guides 13 and 14 are selectively oriented either towards the heart transmission 15a of the optical micro-guide 15 and the transmission core 16a of the optical micro-guide 16 or towards the transmission core 16a of the optical micro-guide 16 and the transmission core 15a of the optical micro-guide 15.
- this structure comprises a substrate 2a for example of silicon on which are deposited a first layer 2b for example of undoped silica then a second layer 2c, for example in undoped silica.
- a first layer 2b for example of undoped silica On the upper surface of the layer 2b and under the layer 2c are formed the aforementioned transmission cores of the aforementioned optical micro-guides, for example made of doped silica, silicon nitride or silicon oxynitride.
- the refractive index of the material constituting their transmission cores is lower than the refractive index of the material or materials constituting the layers surrounding them.
- the transmission cores of the optical micro-guides could be flush with the surface of the structure 2.
- the aforementioned transmission hearts which are co-planar, are of rectangular or square section and have dimensions between five and fourteen microns. The aforementioned transmission cores are arranged so that the travel of the platform 5 is approximately one hundred microns.
- the flexible arms 6 carrying the mobile platform 5 are covered, on either side, with metal layers 21 and 22 and with the longitudinal surfaces of the body 3, located on either side of the arms 6, are covered with metallic layers 23 and 24, so as to constitute the electrodes of capacitive or inductive drive members 6a, these electrodes being connected to supply lines not represented for example by tracks and / or wire bridges not shown.
- These drive members 6a are adapted and are capable of being electrically controlled so as to deform the arms 6 according to determined amplitudes so as to place the platform 5 at said first and second positions and to move it between these positions as required light wave transfer as described above.
- the sidewall 9 of the part 7 and the sidewall 10 of the part 8 of the structure 2 are respectively provided, on either side of the end surfaces 14b and 16b of the optical micro-guides 14 and 16, of layers 25 and 26 either in a light-reflecting material, for example aluminum, or, on the contrary, in a light-absorbing material, for example in amorphous silicon.
- these layers 25 and 26 are either to limit optical losses or to avoid optical disturbances in the light waves passing through the transmission cores 18a, 19a and 20a of the platform which intersect as described above.
- the sides 9 and 10 of the parts 7 and 8 of the body 3 and the sides 11 and 12 of the platform 5 can advantageously be provided with at least one anti-reflection layer covering the abovementioned end surfaces of the hearts.
- this layer comprising in particular a stack of silicon nitride and silica, the thickness of which is chosen as a function of the wavelength of the light waves transmitted.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002222011A AU2002222011A1 (en) | 2000-12-05 | 2001-11-22 | 2x2-channel integrated optical switch |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0015751A FR2817627B1 (fr) | 2000-12-05 | 2000-12-05 | Dispositif de transmission d'ondes optiques dans une structure a inversions |
FR00/15751 | 2000-12-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002046824A2 true WO2002046824A2 (fr) | 2002-06-13 |
WO2002046824A3 WO2002046824A3 (fr) | 2002-09-19 |
Family
ID=8857255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2001/003676 WO2002046824A2 (fr) | 2000-12-05 | 2001-11-22 | Commutateur optique integre, 2x2 voies |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2002222011A1 (fr) |
FR (1) | FR2817627B1 (fr) |
WO (1) | WO2002046824A2 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6807331B2 (en) * | 2000-09-19 | 2004-10-19 | Newport Opticom, Inc. | Structures that correct for thermal distortion in an optical device formed of thermally dissimilar materials |
US7062130B2 (en) | 2003-05-01 | 2006-06-13 | Arthur Telkamp | Low-loss optical waveguide crossovers using an out-of-plane waveguide |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4193662A (en) * | 1977-08-09 | 1980-03-18 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence | Broadband switching system utilizing optical fiber waveguides |
EP0286337A1 (fr) * | 1987-04-02 | 1988-10-12 | BRITISH TELECOMMUNICATIONS public limited company | Appareil de déflexion de radiation |
EP0367904A2 (fr) * | 1988-07-11 | 1990-05-16 | Gte Control Devices Of Puerto Rico Incorporated | Commutateur optique de matrices de fibres en S |
US5002354A (en) * | 1989-10-16 | 1991-03-26 | Gte Laboratories Incorporated | High-extinction 2×2 integrated optical changeover switches |
EP0503979A1 (fr) * | 1991-03-15 | 1992-09-16 | The Furukawa Electric Co., Ltd. | Commutateur optique à guide d'ondes |
US5612815A (en) * | 1995-01-10 | 1997-03-18 | Commissariat A L'energie Atomique | Optical device for optomechanical application |
US5729642A (en) * | 1995-10-02 | 1998-03-17 | The Boeing Company | N×N optical switch array using electro-optic and passive waveguide circuits on planar substrates |
US5828800A (en) * | 1997-06-23 | 1998-10-27 | Lucent Technologies Inc. | Self-aligned mechanical M×N optical switch |
-
2000
- 2000-12-05 FR FR0015751A patent/FR2817627B1/fr not_active Expired - Fee Related
-
2001
- 2001-11-22 WO PCT/FR2001/003676 patent/WO2002046824A2/fr not_active Application Discontinuation
- 2001-11-22 AU AU2002222011A patent/AU2002222011A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4193662A (en) * | 1977-08-09 | 1980-03-18 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence | Broadband switching system utilizing optical fiber waveguides |
EP0286337A1 (fr) * | 1987-04-02 | 1988-10-12 | BRITISH TELECOMMUNICATIONS public limited company | Appareil de déflexion de radiation |
EP0367904A2 (fr) * | 1988-07-11 | 1990-05-16 | Gte Control Devices Of Puerto Rico Incorporated | Commutateur optique de matrices de fibres en S |
US5002354A (en) * | 1989-10-16 | 1991-03-26 | Gte Laboratories Incorporated | High-extinction 2×2 integrated optical changeover switches |
EP0503979A1 (fr) * | 1991-03-15 | 1992-09-16 | The Furukawa Electric Co., Ltd. | Commutateur optique à guide d'ondes |
US5612815A (en) * | 1995-01-10 | 1997-03-18 | Commissariat A L'energie Atomique | Optical device for optomechanical application |
US5729642A (en) * | 1995-10-02 | 1998-03-17 | The Boeing Company | N×N optical switch array using electro-optic and passive waveguide circuits on planar substrates |
US5828800A (en) * | 1997-06-23 | 1998-10-27 | Lucent Technologies Inc. | Self-aligned mechanical M×N optical switch |
Also Published As
Publication number | Publication date |
---|---|
FR2817627A1 (fr) | 2002-06-07 |
AU2002222011A1 (en) | 2002-06-18 |
WO2002046824A3 (fr) | 2002-09-19 |
FR2817627B1 (fr) | 2003-04-04 |
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