WO2009001435A1 - Optical power monitor - Google Patents

Optical power monitor Download PDF

Info

Publication number
WO2009001435A1
WO2009001435A1 PCT/JP2007/062764 JP2007062764W WO2009001435A1 WO 2009001435 A1 WO2009001435 A1 WO 2009001435A1 JP 2007062764 W JP2007062764 W JP 2007062764W WO 2009001435 A1 WO2009001435 A1 WO 2009001435A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical fiber
optical
power monitor
light
core
Prior art date
Application number
PCT/JP2007/062764
Other languages
French (fr)
Japanese (ja)
Inventor
Masaru Suzuki
Masahiro Ao
Original Assignee
Hitachi Metals, Ltd.
Fukuyama, Takeshi
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 Hitachi Metals, Ltd., Fukuyama, Takeshi filed Critical Hitachi Metals, Ltd.
Priority to PCT/JP2007/062764 priority Critical patent/WO2009001435A1/en
Publication of WO2009001435A1 publication Critical patent/WO2009001435A1/en

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4202Packages, e.g. shape, construction, internal or external details for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
    • G02B6/4203Optical features

Abstract

An optical power monitor which ensures reduced size even in a multichannel configuration and reduced light loss. The optical power monitor consists of two pieces of optical fiber at upstream and downstream sides, wherein each optical axis of those optical fiber cores is aligned, and core end faces are fused in opposition to each other at a fusion section. A diameter or a long diameter of a core of the optical fiber at upstream side is greater than a diameter of a core of the optical fiber at downstream side. At the fusion section, a part of a core end face of the optical fiber at upstream side is projecting from a core end face of the optical fiber at downstream side. On a clad layer of the optical fiber at downstream side, a groove is formed in opposition to a projecting portion on the end of the optical fiber at upstream side, and the light which is reflected or transmitted on the fusion section-side surface of the groove is measured by an optical diode. The third order or the fourth order enhanced light of the light which leaks from the core end face of the optical fiber at upstream side into the clad layer of the optical fiber at downstream side is detected by the optical diode. Such a method allows to provide the optical power monitor which ensures reduced size even in a multichannel configuration and reduced light propagation loss.
PCT/JP2007/062764 2007-06-26 2007-06-26 Optical power monitor WO2009001435A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/062764 WO2009001435A1 (en) 2007-06-26 2007-06-26 Optical power monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/062764 WO2009001435A1 (en) 2007-06-26 2007-06-26 Optical power monitor

Publications (1)

Publication Number Publication Date
WO2009001435A1 true WO2009001435A1 (en) 2008-12-31

Family

ID=40185269

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/062764 WO2009001435A1 (en) 2007-06-26 2007-06-26 Optical power monitor

Country Status (1)

Country Link
WO (1) WO2009001435A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3503315A1 (en) * 2017-12-20 2019-06-26 The Boeing Company Remote optical amplifiers powered by scattered light

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61281206A (en) * 1985-06-03 1986-12-11 American Telephone & Telegraph Able lightwave guide coupling apparatus
JPH05264344A (en) * 1992-03-17 1993-10-12 Fujitsu Ltd Method of monitoring input-output light power of light amplifier
JPH09145928A (en) * 1995-11-22 1997-06-06 Matsushita Electric Ind Co Ltd Optical attenuator
JPH10268153A (en) * 1997-03-26 1998-10-09 Sumitomo Electric Ind Ltd Optical fiber type fixed attenuator and manufacture thereof
JP2004505293A (en) * 2000-07-25 2004-02-19 オプテイカル・エア・データ・システムズ,エルピー Optical fiber system
US20050074208A1 (en) * 2001-09-28 2005-04-07 Rodney Badcock Monitor for an optical fibre and multi-guide optical fibre circuits and methods of making them
JP2005148180A (en) * 2003-11-12 2005-06-09 Sun Tec Kk Optical power monitor, method of manufacturing same and analyzer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61281206A (en) * 1985-06-03 1986-12-11 American Telephone & Telegraph Able lightwave guide coupling apparatus
JPH05264344A (en) * 1992-03-17 1993-10-12 Fujitsu Ltd Method of monitoring input-output light power of light amplifier
JPH09145928A (en) * 1995-11-22 1997-06-06 Matsushita Electric Ind Co Ltd Optical attenuator
JPH10268153A (en) * 1997-03-26 1998-10-09 Sumitomo Electric Ind Ltd Optical fiber type fixed attenuator and manufacture thereof
JP2004505293A (en) * 2000-07-25 2004-02-19 オプテイカル・エア・データ・システムズ,エルピー Optical fiber system
US20050074208A1 (en) * 2001-09-28 2005-04-07 Rodney Badcock Monitor for an optical fibre and multi-guide optical fibre circuits and methods of making them
JP2005148180A (en) * 2003-11-12 2005-06-09 Sun Tec Kk Optical power monitor, method of manufacturing same and analyzer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3503315A1 (en) * 2017-12-20 2019-06-26 The Boeing Company Remote optical amplifiers powered by scattered light

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