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Patent Agency Ranking
公开(公告)号：JPH10246873A
公开(公告)日：1998-09-14
申请号：JP964098
申请日：1998-01-21
Applicant: LUCENT TECHNOLOGIES INC
Inventor： JIN SUNGHO , LEMAIRE PAUL JOSEPH , STRASSER THOMAS A
IPC: G02B26/08 , G02B5/18 , G02B6/02 , G02B6/34 , G02B26/00 , G02F1/01 , H04J14/00 , H04J14/02 , G02B6/10 , G02B6/16
Abstract: PROBLEM TO BE SOLVED: To impart a wide tuning range and to unnecessitate continuous electric power by composing the device for inducing force between magnets and generating grating distortion by imparting magnetic field by an electromagnet. SOLUTION: A fiber grating has an optical fiber 11 of some length including a grating 12 composed of an area 13 whose refractive index is changed. The fiber in the grating area is fixed between a pair of magnets 14, 15 transferring force to the grating 12 by adhesion or mechanical attachment. A single or plural magnets (solenoids) realizing controllable magnetic field between them are arranged adjacent to the magnets 14, 15. In this case, when the same magnetic poles are adjacent the magnet is separated by magnetic force in the extending direction of the fiber grating. Reversely, when the reverse magnetic poles of the magnets 14, 15 are adjacent, the magnetic field from the electromagnets 16, 17 generates compressive distortion in the grating.
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公开(公告)号：JPH10246872A
公开(公告)日：1998-09-14
申请号：JP963998
申请日：1998-01-21
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GLASS ALASTAIR MALCOLM , JIN SUNGHO , LEMAIRE PAUL JOSEPH , STRASSER THOMAS A
IPC: G02B26/08 , G02B6/02 , G02B6/34 , G02B26/00 , G02F1/01 , H04B10/02 , H04B10/43 , G02B6/10 , G02B6/16 , H04B10/28
Abstract: PROBLEM TO BE SOLVED: To obtain a tunable fiber grating which has a wider tuning range and does not require continuous electric power. SOLUTION: The tunable fiber grating 10 is fixed to a magnetostrictive main body 14 and magnetic strain is transmitted to a grating 12. An electromagnet is arranged adjacently to the magnetostrictive main body 14 and a magnetic field is applied along the magnetostrictive main body 14. A current applied to the electromagnet is controlled to control a force transmitted to the fiber grating 10, i.e., the interval and reflection frequency of the grating 12. The magnetostrictive main body 14 is a column fixed along the grating 12. Further, magnetostrictive effect is mechanically amplified. Further, an addition/extraction multiplexer which uses the tuable fiber grating 10 is described.
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公开(公告)号：JPH1096827A
公开(公告)日：1998-04-14
申请号：JP23745697
申请日：1997-09-02
Applicant: LUCENT TECHNOLOGIES INC
Inventor： FLEMING DEBRA ANNE , JOHNSON JR DAVID WILFRED , LEMAIRE PAUL JOSEPH
Abstract: PROBLEM TO BE SOLVED: To provide a device having fiber plug gratings subjected to tamperature compensation. SOLUTION: This article has a supporting member 11 and an optical fiber 13 of a certain length which is mounted at this supporting member 11 and has a reflection wavelength λ at a certain temp. (for example, 20 deg.C). This supporting member 11 is a material having a negative coefft. of thermal expansion and contains a compsn. selected from a group consisting of a Zr-tungstate- base compsn. and an Hf-tungstate-base compsn. The material having a positive coefft. of thermal expansion is selected from a group consisting of Al2 O3 , SiO1 , ZrO2 , MgO, CaO and Y2 O3 .
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公开(公告)号：DE69800760D1
公开(公告)日：2001-06-13
申请号：DE69800760
申请日：1998-01-20
Applicant: LUCENT TECHNOLOGIES INC
Inventor： JIN SUNGHO , STRASSER THOMAS A , LEMAIRE PAUL JOSEPH
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公开(公告)号：DE69800760T2
公开(公告)日：2002-02-28
申请号：DE69800760
申请日：1998-01-20
Applicant: LUCENT TECHNOLOGIES INC
Inventor： JIN SUNGHO , STRASSER THOMAS A , LEMAIRE PAUL JOSEPH
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