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1. 发明专利

JP2004007232A LIGHT FILTER, INTERLEAVER, AND OPTICAL COMMUNICATION SYSTEM 审中-公开
公开(公告)号：JP2004007232A
公开(公告)日：2004-01-08
申请号：JP2002160070
申请日：2002-05-31
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： SANO TOMOKI , SHIOZAKI MANABU , SUGANUMA HIROSHI
IPC分类号： G02B5/28 , G02B27/10 , H04B10/2507 , H04B10/27 , H04B10/29 , H04J14/00 , H04J14/02 , H04B10/02
摘要： PROBLEM TO BE SOLVED: To provide a light filter excellent in isolation. SOLUTION: Light inputted from a primary optical path P1 of a light filter 200 is branched and outputted into a second optical path P2 and a third optical path P3. Light inputted into a 2nd beam splitter 221 from the 2nd optical path P2 is branched and outputted into a 5th optical path P5 and a 6th optical path P6. Light outputted to the 5th optical path P5 goes back and forth at a primary reflecting mirror 222 and returns to the 2nd beam splitter 221, light outputted to the 6th optical path P6 goes back and forth at a 2nd reflecting mirror 223, and returns to the 2nd beam splitter 221, and each light is branched out and one light is outputted to the 2nd optical path P2. Light inputted into a primary beam splitter 211 from the second optical path P2 is branched and outputted into the primary optical path P1 and a 4th optical path P4. Light outputted to the 3rd optical path P3 goes back and forth at a 3rd reflecting mirror 232, and returns to a primary beam splitter 211 and branched and outputted into the primary optical path P1 and the 4th optical path P4. COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2002357775A WAVELENGTH VARIABLE FILTER 失效
公开(公告)号：JP2002357775A
公开(公告)日：2002-12-13
申请号：JP2001165074
申请日：2001-05-31
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： TAKAHASHI KENICHIRO , TAMURA MITSUAKI , SANO TOMOKI , SAITO KAZUTO
IPC分类号： G02B26/00 , G02B5/18 , G02B7/00
摘要： PROBLEM TO BE SOLVED: To provide a wavelength variable filter which avoids the occurrence of buckling and reliably compresses a fiber grating part. SOLUTION: In the wavelength variable filter 30, both of a pair of applying members 18 and 19 whose outside ends 20 and 21 are bonded and fixed to an optical fiber 4, respectively are moved along the axial direction of the optical fiber 4 by a feeding means 2A. The fiber grating part 22 is formed on the optical fiber 4 between the outside ends 20 and 21, and force is added to the fiber grating part 22 from both sides along the axial direction of the optical fiber 4. Accordingly, compressive force is reliably added to the fiber grating part 22 along the axial direction of the optical fiber 4, and the occurrence of the buckling is suppressed by covering the optical fiber 4 with the applying members 18 and 19 and movable intermediate members 39 and 40. Furthermore, movement to return the applying members 18 and 19 can reliably be performed by the adoption of the feeding means 2A.

3. 发明专利

JP2002148474A FILTER AND INTERLEAVER 失效
公开(公告)号：JP2002148474A
公开(公告)日：2002-05-22
申请号：JP2000343913
申请日：2000-11-10
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： MURASHIMA KIYOTAKA , INOUE SUSUMU , SUGANUMA HIROSHI , SANO TOMOKI
IPC分类号： G02B27/28 , G02B6/293
摘要： PROBLEM TO BE SOLVED: To provide an interleaver which is excellent in the isolation between signal light wavelengths, and which has flat transmittance in the vicinity of the maximum transmittance. SOLUTION: The interleaver 1 is provided with a double refraction material 31, a wavelength plate 41, a wavelength selective filter 51, a double refraction material 32, a wavelength selective filter 52, an optical path length adjustment element 71, wavelength plates 42A and 42B, and a double refraction material 33 in order from an input port 11 to output ports 21 and 22. The wavelength selective filter 51 makes signal light beams of a first wavelength band which reach from the wavelength plate 41 into a polarized component of a first direction, and signal light beams of a second wavelength band into a polarized component of a second direction. The wavelength selective filter 52 converts the signal light beams (polarized component of the first direction) of the first wavelength band which reach from the double refraction material 32 through a third path P3 into signal light beams essentially consisting of the polarized component of the first direction, and converts the signal light beams (polarized component of the second direction) of the second wavelength band which reach through a fourth path P4 into signal light essentially consisting of the polarized component of the second direction.

4. 发明专利

JP2002148470A METHOD FOR ASSEMBLING OPTICAL COUPLING CIRCUIT 失效
公开(公告)号：JP2002148470A
公开(公告)日：2002-05-22
申请号：JP2000340296
申请日：2000-11-08
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： TAMURA MITSUAKI , SAITO KAZUTO , SANO TOMOKI , SHIMAZU TAKAYUKI
IPC分类号： G02B6/26
摘要： PROBLEM TO BE SOLVED: To provide a method for assembling an optical coupling circuit by which a positional adjustment having high precision is performed by preventing the generation of a deflection in guide pins when a mutual positioning adjustment is performed among substrates. SOLUTION: In the method for assembling the optical coupling circuit wherein a first substrate 1 and a second substrate 2 which fix an optical fiber respectively to both sides of a third substrate 3 on which an optical function part is mounted are arranged and mutual positions of those substrates are matched, the mutual positioning adjustment is performed among three substrates while pressurizing guide pins 4 against guide pin grooves of three substrates with one pressurizing member 5 arranged along the guide pins 4 and having flexural rigidity higher than that of the guide pin 4, along two guide pin grooves in which two guide pins 4 are provided in parallel to each of three substrates.

5. 发明专利

JP2001298413A OPTICAL ADM UNIT 失效
公开(公告)号：JP2001298413A
公开(公告)日：2001-10-26
申请号：JP2000110793
申请日：2000-04-12
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： TAKAHASHI KENICHIRO , SANO TOMOKI , SUGANUMA HIROSHI
IPC分类号： G02B6/00 , G02B6/02 , G02B6/34 , H04B10/07 , H04B10/27 , H04B10/29 , H04B10/293 , H04B10/564 , H04B10/572 , H04J14/00 , H04J14/02 , H04Q3/52 , H04B10/02 , G02B6/10 , H04B10/04 , H04B10/06 , H04B10/14
摘要： PROBLEM TO BE SOLVED: To provide an optical ADM unit, employing a control means that stabilizes a reflection spectrum characteristic of a reflection filter which is a component of the optical ADM unit. SOLUTION: In the optical ADM unit for incorporation into the reflection filter having a wavelength variable device, after an optical branch element branches part of an input signal light as a monitor light, the monitor light is furthermore branched into two, the one of the branched monitor light passes through an optical filter having a wavelength dependent characteristic, the monitor light passing through the optical filter and the monitor light which does not pass through the optical filter are led to a detection circuit, where the ratio of luminous quantities of the two monitor lights is obtained, the wavelength variable device is controlled, so that the ratio is a constant, thereby stabilizing the reflection spectrum characteristic of the reflection filter.

6. 发明专利

JP2003195220A INTERLEAVER 审中-公开
公开(公告)号：JP2003195220A
公开(公告)日：2003-07-09
申请号：JP2001392288
申请日：2001-12-25
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KENMOCHI TAMOYA , SUGANUMA HIROSHI , SANO TOMOKI , IIMURA TETSUYA
IPC分类号： G02B5/30 , G02B6/28 , G02B27/28
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive interleaver for which the complication of an optical system is reduced. SOLUTION: Light inputted to a first port 11 is polarized-light separated by a polarized light separating element 25, the light of a first polarization component is outputted to an optical path P 11 and the light of a second polarization component is outputted to the optical path P 21 . The light of the first polarization component outputted from the polarized light separating element 25 to the optical path P 11 is converted to the light of the second polarization component by a wavelength plate 27. The light inputted from the optical path P 11 to a half mirror 17 is branched into two by the half mirror 17 and outputted to the optical paths P 12 and P 13 . The light outputted to the optical path P 12 is made to go back and forth to/from a first reflection mirror 19, returned from the optical path P 14 to the half mirror 17, branched into two by the half mirror 17 and outputted to the optical paths P 15 and P 16 . The light outputted to the optical path P 13 is made to go back and forth to/from a second reflection mirror 21, returned from the optical path P 17 to the half mirror 17, branched into two by the half mirror 17 and outputted to the optical paths P 15 and P 16 . COPYRIGHT: (C)2003,JPO

7. 发明专利

JP2003140082A INTERLEAVER 审中-公开
公开(公告)号：JP2003140082A
公开(公告)日：2003-05-14
申请号：JP2001338237
申请日：2001-11-02
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KENMOCHI TAMOYA , SUGANUMA HIROSHI , SANO TOMOKI , IIMURA TETSUYA
IPC分类号： G02B27/10
摘要： PROBLEM TO BE SOLVED: To provide an interleaver which is inexpensive and has the complication of an optical system reduced. SOLUTION: Light inputted to a first port 11 from an optical fiber 1 is outputted to an optical path P11 . Light inputted from the optical path P11 to a half mirror 17 is branched into two and is outputted to optical paths P12 and P13 . Light outputted to the optical path P12 goes to and returns from a first reflection mirror 19 and returns from an optical path P14 to the half mirror 17. Light inputted from the optical path P14 to the half mirror 17 is branched into two and is putputted to optical paths P15 and P16 . Light outputted to the optical path P13 goes to and returns from a second reflection mirror 21 and returs from an optical path P17 to the half mirror 17. Light inputted from the optical path P17 to the half mirror 17 is branched into two and is outputted to optical paths P15 and P16 . Light outputted to the optical path P15 is outputted from a second port 13 to an optical fiber 3, and light outputted to the optical path P16 is outputted from a third port 15 to an optical fiber 5.

8. 发明专利

JP2002350668A OPTICAL FIBER FUSION SPLICING METHOD 失效
公开(公告)号：JP2002350668A
公开(公告)日：2002-12-04
申请号：JP2001152766
申请日：2001-05-22
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KAKAZU OSAMU , SANO TOMOKI , NAKAMURA MOTONORI , MORIYA TOMOMI , KAYO SHINJI
IPC分类号： G02B6/255
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber fusion splicing method which can flatten the temperature distribution of an optical fiber along its length nearby a position to be spliced by fusion and then make a mode field diameter distribution flat along the length of the fiber to reduce connection loss. SOLUTION: After optical fibers A and B are spliced by fusion by using the optical fiber fusion splicing device 1, the fusion-spliced parts of the optical fibers A and B are heated by discharging. During this heating by discharging, argon gas is supplied into a housing 10 from a gas supply port 10a to produce an argon gas atmosphere in the housing 10. A couple of electrode rods 13 and 14, while moved by electrode rod moving stages 15 and 16 at least along the length of the fibers (direction parallel to the (z) axis), heat the fusion-spliced parts of the optical fibers A and B by discharging.

9. 发明专利

JP2002148475A INTERLEAVER 失效
公开(公告)号：JP2002148475A
公开(公告)日：2002-05-22
申请号：JP2000343923
申请日：2000-11-10
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： MURASHIMA KIYOTAKA , INOUE SUSUMU , SUGANUMA HIROSHI , SANO TOMOKI
IPC分类号： G02B27/28 , G02B6/293 , H04B10/00 , H04B10/27 , H04B10/29 , H04B10/02
摘要： PROBLEM TO BE SOLVED: To provide an interleaver which is excellent in the isolation between signal light wavelengths, and which has flat transmittance in the vicinity of the maximum transmittance. SOLUTION: The interleaver 1 consists of a double refraction material 31, a wavelength selective filter 51, a double refraction material 32, a wavelength selective filter 52, a Faraday rotor 81, and double refraction materials 33A and 33B. The wavelength selective filter 51 makes signal light beams of a first wavelength band which reach from a first path from the double refraction material 31 into a polarized component of a first direction, and signal light beams of a second wavelength band into a polarized component of a second direction. Signal light beams of the first wavelength band which reach from a second path is made into a polarized component of a second direction, and signal light beams of a second wavelength band is made into a polarized component of a first direction. The wavelength selective filter 52 converts each signal light beam of the first wavelength band which reaches from the double refraction material 32 into the polarized components of the first direction and the second direction, and converts each signal light beam of the second wavelength band which reaches through a third path P4 and a sixth path P6 into the polarized components of the second direction and the first direction.

10. 发明专利

JP2002023074A OPTICAL SWITCH, OPTICAL SWITCH ARRAY AND OPTICAL COUPLING AND BRANCHING DEVICE 失效
公开(公告)号：JP2002023074A
公开(公告)日：2002-01-23
申请号：JP2000210266
申请日：2000-07-11
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： SANO TOMOKI , SAITO KAZUTO , HIRATA YOSHIHIRO
IPC分类号： G02B26/08 , H04B10/00 , H04B10/27 , H04B10/29 , H04B10/02
摘要： PROBLEM TO BE SOLVED: To provide an optical switch, which can be easily made into array, an optical switch array and an optical coupling and branching device. SOLUTION: An optical switch 1 has a glass ferrule 2a parallel holding the top end parts of two optical fibers F1 and F2 and a glass ferrule 2b parallel holding the top end parts of two optical fibers F3 and F4. These glass ferrules 2a and 2b are housed and fixed in V grooves 5a and 5b on a base member 4. Inside the glass ferrules 2a and 2b in the V grooves 5a and 5b, lenses 7a and 7b are respectively housed and fixed. Between the respective lenses 7a and 7b, a reflection mirror 8 is provided for reflecting emitted light from the optical fibers F1-F4. This reflection mirror 8 can be vertically moved by an electromagnet 14 between an ordinary position and a reflecting position put into a recessed mirror positioning part 6.

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