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1. 发明专利

JPH03228849A MULTICOMPONENTAL GLASS FIBER DOPED WITH RARE EARTH 失效
公开(公告)号：JPH03228849A
公开(公告)日：1991-10-09
申请号：JP2103790
申请日：1990-01-31
申请人： SHOWA ELECTRIC WIRE & CABLE CO , NIPPON TELEGRAPH & TELEPHONE
发明人： HORIGUCHI MASAHARU , SUGITA ETSUJI , SHIMIZU MAKOTO , MUTA KENICHI , YAGI KENJI , MORISHITA YUICHI
IPC分类号： C03C13/04
摘要： PURPOSE:To enhance light amplification function in a long wavelength region by regulating both multicomponental glass for a core and multicomponental glass for a cladding to the specified composition ratio and especially adding rare earth oxide to the component for the core. CONSTITUTION:Multicomponental glass for a core having 1.520-1.530 refractive index is obtained by mixing 50-70wt.% (hereinafter shown in %) SiO2, 1-7% Al2O3 15-25% alkali metallic oxide such as Na2O, 5-16% alkaline earth metallic oxide such as CaO, 0-3% Sb2O3 and/or Al2O3 and

2. 发明专利

DE69033277D1 未知
公开(公告)号：DE69033277D1
公开(公告)日：1999-10-07
申请号：DE69033277
申请日：1990-11-23
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： IWANO SHIN ICHI , NAGASE RYO , KANAYAMA KAZUNORI , SUGITA ETSUJI , ANDO YASUHIRO
IPC分类号： G02B6/38 , H01R13/00 , H01R13/62 , H01R13/64 , H01R13/631
摘要： To realize an optical connector in which the optical connector plugs (411) can be inserted only in a predetermined direction or orientation into a connector housing (416) at which a plurality of optical connector plugs (411) are mounted at the highest possible mounting density, the optical connector comprising (a) an adapter housing formed with a housing cutout (425) and two opposing housing projections (424) and (b) a square cross-section optical plug (411) formed with an axially extending plug projection (419) on one side surface thereof so as to be engaged with the housing cutout (425) and with two axially extending plug grooves (418) on two opposing side surfaces thereof so as to be engaged with the two opposing housing projections (424), an outside contour of said square optical connector plug being symmetrical with respect to a plane including an axial center of said connector plug and a middle portion of the plug projection but asymmetrical with respect to the axial center of said connector plug.

3. 发明专利

DE69021350T2 未知
公开(公告)号：DE69021350T2
公开(公告)日：1996-04-11
申请号：DE69021350
申请日：1990-12-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KANAYAMA KAZUNORI , SUGITA ETSUJI , NAGASE RYO , IWANO SHIN ICHI
IPC分类号： G01N3/08 , G01N3/00 , G01N3/02 , G01N3/04 , G01N3/16 , G01N33/38 , G02B6/38 , G02B6/36
摘要： A cylindrical part having an axial slit and called a split alignment sleeve (2) is used in an optical fiber connector for connecting optical fibers to each other. The split alignment sleeve (2) is made of a ceramic material, and the characteristics of the optical fiber connector can be largely improved. Since the split ceramic alignment sleeve (2), however, is brittle, its mechanical strength may be degraded, and the sleeve may be damaged during use for a long period of time. In order to proof the strength reliability of the split ceramic alignment sleeve (2), a predetermined stress is applied to it during a manufacturing inspection to perform a proof test having a criterion for ensuring not to damage the sleeve. The present invention provides an easy, low-cost test method and an apparatus therefor. More specifically, since a test load is applied from the inner circumferential surface (15a) of the split ceramic alignment sleeve, the shape, structure, and assembly of the loading part of a test apparatus are disclosed, and a proof test method of the split ceramic alignment sleeve by using the test apparatus is also disclosed.

4. 发明专利

DE68922392T2 未知
公开(公告)号：DE68922392T2
公开(公告)日：1995-08-31
申请号：DE68922392
申请日：1989-08-22
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NAGASE RYO , NODA JUICHI , SUGITA ETSUJI
IPC分类号： G02B6/30 , G02B6/32 , G02B6/38 , G02B6/42
摘要： A ferrule for optical fibers transmitting linearly polarized light capable of preventing deterioration and fluctuation of the extinction ratio. The ferrule (100) incorporates at least two paths (107) connecting a region in a vicinity of an end of a puncture (102) for an optical fiber inside the flange portion with outside of the ferrule. These paths effectively enable the removal of air in such a region which could have caused an extraneous stress on the optical fiber resulting in deterioration of the extinction ratio. An optical fiber connector using this ferrule is also disclosed.

5. 发明专利

DE68922392D1 未知
公开(公告)号：DE68922392D1
公开(公告)日：1995-06-01
申请号：DE68922392
申请日：1989-08-22
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NAGASE RYO , NODA JUICHI , SUGITA ETSUJI
IPC分类号： G02B6/30 , G02B6/32 , G02B6/38 , G02B6/42
摘要： A ferrule for optical fibers transmitting linearly polarized light capable of preventing deterioration and fluctuation of the extinction ratio. The ferrule (100) incorporates at least two paths (107) connecting a region in a vicinity of an end of a puncture (102) for an optical fiber inside the flange portion with outside of the ferrule. These paths effectively enable the removal of air in such a region which could have caused an extraneous stress on the optical fiber resulting in deterioration of the extinction ratio. An optical fiber connector using this ferrule is also disclosed.

6. 发明专利

CA2354174A1 OPTICAL CONNECTOR 未知
公开(公告)号：CA2354174A1
公开(公告)日：1991-05-25
申请号：CA2354174
申请日：1990-11-26
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KANAYAMA KAZUNORI , NAGASE RYO , IWANO SHIN ICHI , SUGITA ETSUJI , ANDO YASUHIRO
IPC分类号： G02B6/36
摘要： To realize an optical fiber connector coupled or decoupled by simple insertion and removal operation without applying ferrule connecting force to other elements (package board or back panel), the optical connector comprises a first housing (33); a second housing (34); a third housing (36) slidably housed within the second housing; a first engage mechanism (37, 38) provided between the second and third housings, for engaging these two housings when the first and third housings are not coupled; a second engage mechanism (39, 40) provided between the first and third housings, for engaging these two housings when the first housing is coupled to second and third housings; a first release member (41) provided for the first housings, for releasing the first engage mechanism when the third housing is engaged to the first housing; and a second release member (42) provided for the second housing, for releasing the second engage mechanism when the second housing is coupled to the third housing or the first housing is decoupled from the second and third housings. Further, to allow the optical connector to be preferably applicable to a plug-in connector with the smallest possible dimensions and with the highest possible package density, a novel connector floating structure, a novel slidable ferrule supportingstructure, a strong optical plug connecting mechanism, a reliable optical plug or jack insertion structure, a cleanable and replaceable connector jack, etc. are also disclosed.

7. 发明专利

CA2354170C OPTICAL CONNECTOR 未知
公开(公告)号：CA2354170C
公开(公告)日：2004-01-13
申请号：CA2354170
申请日：1990-11-26
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SUGITA ETSUJI , KANAYAMA KAZUNORI , NAGASE RYO , ANDO YASUHIRO , IWANO SHIN ICHI
IPC分类号： G02B6/36
摘要： To realize an optical fiber connector coupled or decoupled by simple insertion and removal operation without applying ferrule connecting force to other elements (package board or back panel), the optical connector comprises a first housing (33); a second housing (34); a third housing (36) slidably housed within the second housing; a first engage mechanism (37, 38) provided between the second and third housings, for engaging these two housings when the first and third housings are not coupled; a second engage mechanism (39, 40) provided between the first and third housings, for engaging these two housings when the first housing is coupled to second and third housings; a first release member (41) provided for the first housings, for releasing the first engage mechanism when the third housing is engaged to the first housing; and a second release member (42) provided for the second housing, for releasing the second engage mechanism when the second housing is coupled to the third housing or the first housing is decoupled from the second and third housings. Further, to allow the optical connector to be preferably applicable to a plug-in connector with the smallest possible dimensions and with the highest possible package density, a novel connector floating structure, a novel slidable ferrule supportingstructure, a strong optical plug connecting mechanism, a reliable optical plug or jack insertion structure, a cleanable and replaceable connector jack, etc. are also disclosed.

8. 发明专利

DE69033767T2 未知
公开(公告)号：DE69033767T2
公开(公告)日：2002-04-18
申请号：DE69033767
申请日：1990-11-23
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： IWANO SHIN ICHI , NAGASE RYO , KAZUNORI KANAYAMA , SUGITA ETSUJI , ANDO YASUHIRO
IPC分类号： G02B6/38 , H01R13/00 , H01R13/62 , H01R13/64 , H01R13/631
摘要： To realize an optical connector in which the optical connector plugs (411) can be inserted only in a predetermined direction or orientation into a connector housing (416) at which a plurality of optical connector plugs (411) are mounted at the highest possible mounting density, the optical connector comprising (a) an adapter housing formed with a housing cutout (425) and two opposing housing projections (424) and (b) a square cross-section optical plug (411) formed with an axially extending plug projection (419) on one side surface thereof so as to be engaged with the housing cutout (425) and with two axially extending plug grooves (418) on two opposing side surfaces thereof so as to be engaged with the two opposing housing projections (424), an outside contour of said square optical connector plug being symmetrical with respect to a plane including an axial center of said connector plug and a middle portion of the plug projection but asymmetrical with respect to the axial center of said connector plug.

9. 发明专利

DE69026472T2 未知
公开(公告)号：DE69026472T2
公开(公告)日：1996-10-17
申请号：DE69026472
申请日：1990-11-23
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： IWANO SHIN ICHI , NAGASE RYO , KANAYAMA KAZUNORI , SUGITA ETSUJI , ANDO YASUHIRO
IPC分类号： G02B6/38 , H01R13/00 , H01R13/62 , H01R13/64 , H01R13/631 , H01R13/629
摘要： To realize an optical connector in which the optical connector plugs (411) can be inserted only in a predetermined direction or orientation into a connector housing (416) at which a plurality of optical connector plugs (411) are mounted at the highest possible mounting density, the optical connector comprising (a) an adapter housing formed with a housing cutout (425) and two opposing housing projections (424) and (b) a square cross-section optical plug (411) formed with an axially extending plug projection (419) on one side surface thereof so as to be engaged with the housing cutout (425) and with two axially extending plug grooves (418) on two opposing side surfaces thereof so as to be engaged with the two opposing housing projections (424), an outside contour of said square optical connector plug being symmetrical with respect to a plane including an axial center of said connector plug and a middle portion of the plug projection but asymmetrical with respect to the axial center of said connector plug.

10. 发明专利

AU648473B2 Optical connector 未知
公开(公告)号：AU648473B2
公开(公告)日：1994-04-21
申请号：AU4606593
申请日：1993-09-01
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： IWANO SHIN ICHI , NAGASE RYO , KANAYAMA KAZUNORI , SUGITA ETSUJI , ANDO YASUHIRO
IPC分类号： G02B6/38 , G02B6/36

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