CA2293660A1 - High efficiency channel drop filter with absorption induced on/off switching and modulation - Google Patents

High efficiency channel drop filter with absorption induced on/off switching and modulation Download PDF

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Publication number
CA2293660A1
CA2293660A1 CA002293660A CA2293660A CA2293660A1 CA 2293660 A1 CA2293660 A1 CA 2293660A1 CA 002293660 A CA002293660 A CA 002293660A CA 2293660 A CA2293660 A CA 2293660A CA 2293660 A1 CA2293660 A1 CA 2293660A1
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CA
Canada
Prior art keywords
filter
waveguides
resonator
frequencies
switching
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002293660A
Other languages
French (fr)
Other versions
CA2293660C (en
Inventor
Shanhui Fan
Pierre R. Villeneuve
John D. Joannopoulos
Brent E. Little
Hermann A. Haus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Massachusetts Institute of Technology
Original Assignee
Massachusetts Institute Of Technology
Shanhui Fan
Pierre R. Villeneuve
John D. Joannopoulos
Brent E. Little
Hermann A. Haus
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/968,314 external-priority patent/US6130969A/en
Application filed by Massachusetts Institute Of Technology, Shanhui Fan, Pierre R. Villeneuve, John D. Joannopoulos, Brent E. Little, Hermann A. Haus filed Critical Massachusetts Institute Of Technology
Publication of CA2293660A1 publication Critical patent/CA2293660A1/en
Application granted granted Critical
Publication of CA2293660C publication Critical patent/CA2293660C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/31—Digital deflection, i.e. optical switching
    • G02F1/313—Digital deflection, i.e. optical switching in an optical waveguide structure
    • G02F1/3132—Digital deflection, i.e. optical switching in an optical waveguide structure of directional coupler type
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/06—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 integrated waveguide
    • G02F2201/066—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 integrated waveguide channel; buried
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/32—Photonic crystals
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/15—Function characteristic involving resonance effects, e.g. resonantly enhanced interaction
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/58—Multi-wavelength, e.g. operation of the device at a plurality of wavelengths
    • G02F2203/585—Add/drop devices

Abstract

A highly efficient channel drop filter. The filter employs a coupling element including a resonator-system between two waveguides, which contains at least two resonant modes. The resonator-system includes one or more interacting resonant cavities which in addition to being coupled to the waveguides, can also be coupled directly among themselves and indirectly among themselves via the waveguides. Each component of the coupling element can be configured or adjusted individually.
The geometry and/or dielectric constant/refractive index of the resonator-system are configured so that the frequencies and decay rates of the resonant modes are made to be substantially the same.
The filter can achieve 100 % signal transfer between the waveguides at certain frequencies, while completely prohibiting signal transfer at other frequencies. In exemplary embodiments, the filter is configured with photonic crystals. In accordance with alternative embodiments of the invention, the filter is configured as an absorption induced on/off switch and modulator. The switching action is achieved with either electrical or optical absorption.
CA002293660A 1997-06-09 1998-06-08 High efficiency channel drop filter with absorption induced on/off switching and modulation Expired - Fee Related CA2293660C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US87174797A 1997-06-09 1997-06-09
US08/871,747 1997-06-09
US08/968,314 1997-11-12
US08/968,314 US6130969A (en) 1997-06-09 1997-11-12 High efficiency channel drop filter
US09/080,037 1998-05-15
US09/080,037 US6101300A (en) 1997-06-09 1998-05-15 High efficiency channel drop filter with absorption induced on/off switching and modulation
PCT/US1998/011319 WO1998057207A1 (en) 1997-06-09 1998-06-08 High efficiency channel drop filter with absorption induced on/off switching and modulation

Publications (2)

Publication Number Publication Date
CA2293660A1 true CA2293660A1 (en) 1998-12-17
CA2293660C CA2293660C (en) 2004-10-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA002293660A Expired - Fee Related CA2293660C (en) 1997-06-09 1998-06-08 High efficiency channel drop filter with absorption induced on/off switching and modulation

Country Status (5)

Country Link
US (2) US6101300A (en)
EP (1) EP0988569A1 (en)
JP (1) JP2001508887A (en)
CA (1) CA2293660C (en)
WO (1) WO1998057207A1 (en)

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US6512866B1 (en) 2003-01-28
WO1998057207A1 (en) 1998-12-17

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