WO2008087854A1 - Optical phase-modulation evaluating device - Google Patents

Optical phase-modulation evaluating device Download PDF

Info

Publication number
WO2008087854A1
WO2008087854A1 PCT/JP2008/000011 JP2008000011W WO2008087854A1 WO 2008087854 A1 WO2008087854 A1 WO 2008087854A1 JP 2008000011 W JP2008000011 W JP 2008000011W WO 2008087854 A1 WO2008087854 A1 WO 2008087854A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical phase
light
optical
disposed
delay
Prior art date
Application number
PCT/JP2008/000011
Other languages
French (fr)
Japanese (ja)
Inventor
Takao Tanimoto
Koji Kawakita
Original Assignee
Anritsu Corporation
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 JP2007288869A external-priority patent/JP2008197621A/en
Application filed by Anritsu Corporation filed Critical Anritsu Corporation
Priority to US12/523,150 priority Critical patent/US8160458B2/en
Publication of WO2008087854A1 publication Critical patent/WO2008087854A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0799—Monitoring line transmitter or line receiver equipment

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)

Abstract

Provided is an optical phase-modulation evaluating device capable of evaluating the modulated state of an optical phase-modulated signal more precisely than the prior art. An optical phase-modulation evaluating module (10) comprises a bit delay device (15) disposed on the optical paths of a third light (103) and a fifth light (105), for giving an optical path length corresponding to the delay of one bit of a symbol rate, and an optical phase-difference setter (16) for giving a delay of a predetermined optical phase excepting zero, to at least one of a ninth light (109) and a tenth light (110). The optical phase-difference setter (16) includes a transparent plate (16a) disposed on the optical path of the ninth light (109), and a transparent plate (16b) disposed on the optical path of the tenth light (110).
PCT/JP2008/000011 2007-01-16 2008-01-10 Optical phase-modulation evaluating device WO2008087854A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/523,150 US8160458B2 (en) 2007-01-16 2008-01-10 Optical phase-modulation evaluating device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007-007086 2007-01-16
JP2007007086 2007-01-16
JP2007288869A JP2008197621A (en) 2007-01-16 2007-11-06 Optical phase-modulation evaluating device
JP2007-288869 2007-11-06

Publications (1)

Publication Number Publication Date
WO2008087854A1 true WO2008087854A1 (en) 2008-07-24

Family

ID=39635859

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/000011 WO2008087854A1 (en) 2007-01-16 2008-01-10 Optical phase-modulation evaluating device

Country Status (1)

Country Link
WO (1) WO2008087854A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100321701A1 (en) * 2009-06-22 2010-12-23 Rudolf Vrnoga Two optical media two sectional L-shaped double parallel beams interferometer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1031126A (en) * 1996-07-15 1998-02-03 Oki Electric Ind Co Ltd Optical branching device, optical fiber for output terminal, output level correcting method for optical branching coupler and output level correcting device therefor
JP2004093926A (en) * 2002-08-30 2004-03-25 Alnair Labs:Kk Optical alignment system, optical alignment method, and regulating method of optical alignment system
JP2006287493A (en) * 2005-03-31 2006-10-19 Fujitsu Ltd Optical receiver corresponding to m-phase difference phase shift modulation system
JP2007306371A (en) * 2006-05-12 2007-11-22 Yokogawa Electric Corp Delay interferometer and demodulator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1031126A (en) * 1996-07-15 1998-02-03 Oki Electric Ind Co Ltd Optical branching device, optical fiber for output terminal, output level correcting method for optical branching coupler and output level correcting device therefor
JP2004093926A (en) * 2002-08-30 2004-03-25 Alnair Labs:Kk Optical alignment system, optical alignment method, and regulating method of optical alignment system
JP2006287493A (en) * 2005-03-31 2006-10-19 Fujitsu Ltd Optical receiver corresponding to m-phase difference phase shift modulation system
JP2007306371A (en) * 2006-05-12 2007-11-22 Yokogawa Electric Corp Delay interferometer and demodulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100321701A1 (en) * 2009-06-22 2010-12-23 Rudolf Vrnoga Two optical media two sectional L-shaped double parallel beams interferometer

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