JPS6476012A - Periodic type optical filter - Google Patents

Periodic type optical filter

Info

Publication number
JPS6476012A
JPS6476012A JP62232421A JP23242187A JPS6476012A JP S6476012 A JPS6476012 A JP S6476012A JP 62232421 A JP62232421 A JP 62232421A JP 23242187 A JP23242187 A JP 23242187A JP S6476012 A JPS6476012 A JP S6476012A
Authority
JP
Japan
Prior art keywords
optical waveguide
optical
order
ring
refractive index
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.)
Pending
Application number
JP62232421A
Other languages
Japanese (ja)
Inventor
Kazuhiro Oda
Hiroshi Toba
Kiyoshi Nosu
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
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
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP62232421A priority Critical patent/JPS6476012A/en
Publication of JPS6476012A publication Critical patent/JPS6476012A/en
Pending legal-status Critical Current

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
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
    • G02B6/2935—Mach-Zehnder configuration, i.e. comprising separate splitting and combining means
    • G02B6/29352—Mach-Zehnder configuration, i.e. comprising separate splitting and combining means in a light guide
    • G02B6/29353—Mach-Zehnder configuration, i.e. comprising separate splitting and combining means in a light guide with a wavelength selective element in at least one light guide interferometer arm, e.g. grating, interference filter, resonator

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Optical Integrated Circuits (AREA)
  • Optical Filters (AREA)

Abstract

PURPOSE:To multiplex and demultiplex an optical signal whose frequency interval is a GHz order by executing an adjustment of optical waveguide length by a wavelength order of light, and also, enlarging a specific refractive index difference of a ring-like optical waveguide, and forming small a cross section shape of its optical waveguide. CONSTITUTION:On first and the second optical waveguides 13, 14 and a ring-like optical waveguide 17 for constituting a Mach-Zehnder interferometer, phase adjustment use electrodes 21, 22 in a phase adjusting means 24 are loaded and a control of the optical waveguide lengths 13, 14 is executed by an order of the optical wavelength. Also, as for a bending loss, comparing with input use optical waveguides 11, 12 and output use optical waveguides 15, 16, a specific refractive index difference of the ring-like optical waveguide 17 is made larger, and also, a cross section shape of the optical waveguide 17 is made smaller, by which the influence of the bending loss can be nearly disregarded. In such a way, an optical signal whose frequency interval is a GHz order can be multiplexed and demultiplexed at a low loss.
JP62232421A 1987-09-18 1987-09-18 Periodic type optical filter Pending JPS6476012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62232421A JPS6476012A (en) 1987-09-18 1987-09-18 Periodic type optical filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62232421A JPS6476012A (en) 1987-09-18 1987-09-18 Periodic type optical filter

Publications (1)

Publication Number Publication Date
JPS6476012A true JPS6476012A (en) 1989-03-22

Family

ID=16938995

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62232421A Pending JPS6476012A (en) 1987-09-18 1987-09-18 Periodic type optical filter

Country Status (1)

Country Link
JP (1) JPS6476012A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0484129A (en) * 1990-07-27 1992-03-17 Nec Corp Semiconductor wavelength filter
JPH07199240A (en) * 1993-12-28 1995-08-04 Nec Corp Optical modulation method
JP2007094440A (en) * 2007-01-11 2007-04-12 Fujitsu Ltd Optical waveguide, optical device, and optical waveguide manufacturing method
JP2009099987A (en) * 2007-10-15 2009-05-07 Asml Holding Nv Pulse to pulse energy equalization of light beam intensity
JP2010054624A (en) * 2008-08-26 2010-03-11 Nippon Telegr & Teleph Corp <Ntt> Wavelength variable filter and optical signal monitor using the same
JP2010054620A (en) * 2008-08-26 2010-03-11 Nippon Telegr & Teleph Corp <Ntt> Optical signal monitor
JP2014182259A (en) * 2013-03-19 2014-09-29 Fujitsu Ltd Wavelength multiplexer/demultiplexer and optical integrated circuit device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59181704A (en) * 1983-03-30 1984-10-16 Nec Corp High frequency filter
JPS60123102A (en) * 1983-12-06 1985-07-01 Nec Corp Extra-high frequency filter
JPS6159432A (en) * 1984-08-31 1986-03-26 Nippon Telegr & Teleph Corp <Ntt> Tunable optical multiplexer/demultiplexer
JPS62100706A (en) * 1985-10-28 1987-05-11 Nippon Telegr & Teleph Corp <Ntt> Optical ring filter
JPS62183406A (en) * 1986-02-07 1987-08-11 Nippon Telegr & Teleph Corp <Ntt> Waveguide type optical interferometer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59181704A (en) * 1983-03-30 1984-10-16 Nec Corp High frequency filter
JPS60123102A (en) * 1983-12-06 1985-07-01 Nec Corp Extra-high frequency filter
JPS6159432A (en) * 1984-08-31 1986-03-26 Nippon Telegr & Teleph Corp <Ntt> Tunable optical multiplexer/demultiplexer
JPS62100706A (en) * 1985-10-28 1987-05-11 Nippon Telegr & Teleph Corp <Ntt> Optical ring filter
JPS62183406A (en) * 1986-02-07 1987-08-11 Nippon Telegr & Teleph Corp <Ntt> Waveguide type optical interferometer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0484129A (en) * 1990-07-27 1992-03-17 Nec Corp Semiconductor wavelength filter
JPH07199240A (en) * 1993-12-28 1995-08-04 Nec Corp Optical modulation method
JP2007094440A (en) * 2007-01-11 2007-04-12 Fujitsu Ltd Optical waveguide, optical device, and optical waveguide manufacturing method
JP2009099987A (en) * 2007-10-15 2009-05-07 Asml Holding Nv Pulse to pulse energy equalization of light beam intensity
JP2012033942A (en) * 2007-10-15 2012-02-16 Asml Holding Nv Pulse to pulse energy equalization of light beam intensity
JP2010054624A (en) * 2008-08-26 2010-03-11 Nippon Telegr & Teleph Corp <Ntt> Wavelength variable filter and optical signal monitor using the same
JP2010054620A (en) * 2008-08-26 2010-03-11 Nippon Telegr & Teleph Corp <Ntt> Optical signal monitor
JP2014182259A (en) * 2013-03-19 2014-09-29 Fujitsu Ltd Wavelength multiplexer/demultiplexer and optical integrated circuit device

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