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1. 发明专利

JPH09159852A JIG FOR INSERTING AND FIXING THIN-FILM FILTER INTO GROOVE AND ITS METHOD 失效
公开(公告)号：JPH09159852A
公开(公告)日：1997-06-20
申请号：JP31552695
申请日：1995-12-04
申请人： HITACHI CABLE , NIPPON TELEGRAPH & TELEPHONE
发明人： TOMITA NOBUO , SHIRATA TOMOYUKI , KUROSAWA MASAAKI
IPC分类号： G02B6/122 , G02B6/13
摘要： PROBLEM TO BE SOLVED: To make it possible to prevent the misalignment of a thin-film filter at the time of adhering this thin-film filter into a groove of a waveguide by improving the workability and eliminating the warpage of the thin-film filter at the time of inserting and fixing the thin-film filter into this groove. SOLUTION: An Si substrate is etched and is formed with a filter insertion hole 11 penetrating down to the base 10a of the Si substrate and slopes 12 to diagonally erect and support the thinfilm filter are formed on this filter insertion hole 11 when the thin-film filter is going to be inserted and fixed into the groove 15 formed in the waveguide. In such a case, the filter insertion hole 11 consists of a filter insertion part 13 formed with the slopes 12 and a filter fixing part 14 for holding both sides of the thin-film filter after the insertion into the groove 15 on the side facing this filter insertion part 13.

2. 发明专利

JPH08271742A WAVEGUIDE WITH FILTER AND PRODUCTION OF BLOCK FOR FIXING FILTER 失效
公开(公告)号：JPH08271742A
公开(公告)日：1996-10-18
申请号：JP7800695
申请日：1995-04-03
申请人： HITACHI CABLE , NIPPON TELEGRAPH & TELEPHONE
发明人： TOMITA NOBUO , SHIRATA TOMOYUKI , UETSUKA NAOTO , KUROSAWA MASAAKI , OKANO HIROAKI , TAKEYA NORIAKI
IPC分类号： G02B6/12
摘要： PURPOSE: To provide a waveguide with a filter with which the efficient fixing of a cord and a thin-film filter in a manner as to make both perpendicular is possible without warping this thin-film filter at the time of inserting and fixing the thin-film filter into the slit of a waveguide element and a process for producing a block for fixing the filter. CONSTITUTION: The thin-film filter 6 to be inserted into the slit of the waveguide with the filter formed by inserting the thin-film filter 6 into the slit crossing the core 2 of the waveguide element 4 formed on a waveguide substrate 1, then fixing the filter is fixed to the block 10 for fixing the filter and thereafter, this thin-film filter 6 is inserted into the slit and is fixed together with the block 10 for fixing the filter to the waveguide element 4.

3. 发明专利

JPH05341143A 失效
公开(公告)号：JPH05341143A
公开(公告)日：1993-12-24
申请号：JP14435992
申请日：1992-06-04
申请人： HITACHI CABLE
发明人： UETSUKA NAOTO , KUROSAWA MASAAKI
IPC分类号： G02B6/122 , G02B6/12 , G02B6/42 , H04B10/2507 , H04B10/40 , H04B10/50 , H04B10/60 , H04B10/02
摘要： PURPOSE:To make a device compact, and reduce cost, and enable a high speed modulation by housing a light emitting element chip for sending and a light receiving element chip for receiving in a grove provided in a silicon substrate so as to be optically coupled with an optical waveguide. CONSTITUTION:In a waveguide element 1, a quarts glass is laminated on a silicon substrate 12 to form an optical waveguide 62, which consists of a core and a clad. The silicon substrate 12 is formed with a mounting groove 21 at a predetermined depth, and a stem 2 with a lens.LD (laser diode) and a stem 3 with monitor PD (photo-diode) and a stem 4 with signal detecting PD are arranged on the mounting groove 21. The stem 2 is formed with a rectangular base made of silicon, and an LD chip 34 as a light emitting element chip for sending and a spherical lens 31 are placed on this base. The stem 4 is formed with a base, which is provided with a reflecting end surface opposite to the waveguide 62, and a signal detecting PD chip as a light receiving element chip for receiving is placed on this base. These chips are optically coupled with the waveguide 62.

4. 发明专利

JPS62119508A OPTICAL MULTIDISTRIBUTION TYPE SEMICONDUCTOR LASER MODULE PROVIDED WITH GROOVED FERRULE FOE BUNDLING PLURAL OPTICAL FIBERS 失效
公开(公告)号：JPS62119508A
公开(公告)日：1987-05-30
申请号：JP25861685
申请日：1985-11-20
申请人： JAPAN BROADCASTING CORP , HITACHI CABLE
发明人： YAMAGUCHI KOICHI , IKEDA YOSHITAKA , KUSUYAMA HIROAKI , KUROSAWA MASAAKI , IIZUKA TOSHIO
IPC分类号： G02B6/42
摘要： PURPOSE:To bundle optical fibers with a high density by providing plural optical fibers, a bundling groove, a fiber retaining jig, and a guide member. CONSTITUTION:Plural optical fibers 1 whose coating materials 3 in incidence end parts are removed and clads are reduced, a bundling groove 6 formed along optical fibers stored in a ferrule 2 where these optical fibers are stored, fiber retaining jigs 7 and 8 which retain plural optical fibers 1 fitted to and stored in the bundling groove 6 in the bottom of the groove to bundle optical fibers with a high density, and the guide member whose one end a semiconductor laser diode 10 is set to and the other end the ferrure aligned to the optical axis of the semiconductor laser diode is fixed to are provided. Thus, optical fibers are bundled with a high density without bending sharply optical fibers. The clad thickness in the incidence end of plural optical fiber strands is set to

5. 发明专利

JPH05142450A WDM MODULE FOR BI-DIRECTIONAL OPTICAL TRANSMISSION 失效
公开(公告)号：JPH05142450A
公开(公告)日：1993-06-11
申请号：JP30636291
申请日：1991-11-21
申请人： HITACHI CABLE , HITACHI LTD
发明人： UETSUKA NAOTO , KUROSAWA MASAAKI , KUSUYAMA HIROYUKI , AOKI SATOSHI , IMOTO KATSUYUKI , KOYAMA YUKIO
IPC分类号： G02B6/122 , G02B6/12 , G02B6/28 , G02B6/293 , G02B6/42 , H01L31/0232 , H01S5/00 , H04B10/25 , H04B10/2507
摘要： PURPOSE:To obtain the WDM module for bi-directional optical transmission which is small in size and enables high-speed modulation and has small crosstalk. CONSTITUTION:A module consists of a semiconductor laser 4 and a photodetecting element 9 for two directional couplers 11 and lambda1 consisting of thin film waveguides formed on a waveguide substrate 8. The sent signal from the laser 4 which has wavelength An is outputted to a fiber 17 from a slantingly cut end surface of the substrate 8 through a waveguide 12 which selectively transmits the signal with the wavelength lambda1. A received signal wave having wavelength lambda2 is made incident on the directional coupler 11, passed through a waveguide 13 which selectively transmits the lambda2 and reflected by a wavelength selective reflecting film 19 on the end surface of the substrate 8 which transmits the lambda1 and reflects the lambda2, and detected by the photodetecting element 20 through the waveguide 14 of the directional coupler 18. Return light from the fiber which has the wavelength lambda1 is cut off because of the wavelength selectivity of the waveguide 13 and reflecting film 19 and the photodetecting element removes stray light by a pinhole, so the crosstalk is small. Further, the return light with the lambda1 is reflected by the slanting surfaces of the slanting end surface 8a of substrate and a lens 7 and does not return to the laser.

6. 发明专利

JPS6370208A OPTICAL FIBER TYPE STAR COUPLER 失效
公开(公告)号：JPS6370208A
公开(公告)日：1988-03-30
申请号：JP21393386
申请日：1986-09-12
申请人： HITACHI LTD , HITACHI CABLE
发明人： IMOTO KATSUYUKI , KUSUYAMA HIROYUKI , KUROSAWA MASAAKI
IPC分类号： G02B6/28
摘要： PURPOSE:To reduce variation in distribution deviation with temperature by providing at least one opening part to a glass pipe at both its end parts where an adhesive is filled. CONSTITUTION:An optical fiber type star coupler is constituted by inserting an optical fiber bundle where a twisted, fused, and drawn part 3 is formed into the glass pipe 2 and fixing the glass pipe and optical fiber bundle with adhesives 4 to both end parts 10a and 10b of the pipe where holes 8a-8b and 8i-8g are bored. Even if the glass pipe 2 cracks, the optical fiber bundle which has the cracking can be held by coating the outer periphery of the pipe with an adhesive.

7. 发明专利

JPH0533762B2 失效
公开(公告)号：JPH0533762B2
公开(公告)日：1993-05-20
申请号：JP17731686
申请日：1986-07-28
申请人： HITACHI CABLE
发明人： IIZUKA TOSHIO , KUSUYAMA HIROYUKI , KUROSAWA MASAAKI
IPC分类号： G02B6/28

8. 发明专利

JPH03141305A OPTICAL INTEGRATED CIRCUIT AND OPTICAL MODULE 失效
公开(公告)号：JPH03141305A
公开(公告)日：1991-06-17
申请号：JP28060989
申请日：1989-10-27
申请人： HITACHI CABLE , HITACHI LTD
发明人： IMOTO KATSUYUKI , UETSUKA NAOTO , KUROSAWA MASAAKI , MAEDA SHIGEMICHI , HIMI SUSUMU , KANEKO SATOSHI
IPC分类号： G02B6/42 , G02B6/12 , G02B6/122
摘要： PURPOSE:To obtain the versatile optical integrated type module having various functions by constituting plural optical circuits by a waveguide structure on one sheet of substrate in such a manner that the respective optical circuits are independently used optically regardless from each other. CONSTITUTION:The plural optical circuits which are not optically coupled to each other and are independent from each other are previously formed as the optical integrated circuit 11 constituted by the waveguide structure on one sheet of the substrate. For example, a semiconductor laser 3 and an optical fiber 1 are connected in the straight or curved waveguide in the integrated circuit 11 in the case of use of this circuit as an optical transmission module. The semiconductor laser 3, the photodetector 4 and the optical fiber 1 are connected to the multiplexer/demultiplexer in the integrated circuit 11 in the case of use as an optical bidirectional transmission module. The optical transmission module having various functions is easily obtd. by using only one kind of the versatile optical integrated circuit in this way and since the mass production of the optical integrated circuit of the waveguide structure is possible, the cost reduction is easy.

9. 发明专利

JPH01277806A OPTICAL MULTIPLEXER/DEMULTIPLEXER 失效
公开(公告)号：JPH01277806A
公开(公告)日：1989-11-08
申请号：JP10835188
申请日：1988-04-30
申请人： HITACHI CABLE
发明人： IMOTO KATSUYUKI , UETSUKA NAOTO , KUROSAWA MASAAKI
IPC分类号： G02B6/293 , G02B6/12 , G02B6/28 , G02B6/34 , H04B10/27 , H04B10/29
摘要： PURPOSE:To reduce cost by disposing in parallel directional couplers consisting of 2 inputs and 2 outputs and connecting the respective directional couplers so as to have an optical path length difference. CONSTITUTION:All the directional couplers 10-60 consisting of the 2 inputs and 2 outputs are disposed in parallel. The 2-output terminals of the 1st directional coupler 10 and the 2-input terminals of the 2nd directional coupler 20 are so connected as to have the optical path length difference. Further, one of the input terminals of the 3rd and 4th directional couplers 30, 50 is connected to the different terminals of the 2-output terminals of the 2nd directional coupler 20. The 5th directional coupler 40 is connected to the 3rd directional coupler 30 and the 6th directional coupler 60 is connected to the 4th directional coupler respectively in a manner as to have the optical path length difference. The constitution which is well balanced in the vertical and horizontal sizes is enabled by such parallel disposition of the directional couplers 10-60. The productivity is thereby improved and the cost is reduced.

10. 发明专利

JPS63256907A MULTICORE OPTICAL CONNECTOR 失效
公开(公告)号：JPS63256907A
公开(公告)日：1988-10-24
申请号：JP9113287
申请日：1987-04-14
申请人： HITACHI CABLE
发明人： KUSUYAMA HIROYUKI , KUROSAWA MASAAKI
IPC分类号： G02B6/36 , G02B6/38 , G02B6/40
摘要： PURPOSE:To connect plural optical fibers in a short time with low loss by arraying plural optical fibers at the circumference of a center member, pressing the optical fibers by an external member in the same shape with the center member, and positioning and connecting the optical fibers mutually by a positioning means. CONSTITUTION:A multicore optical connector is provided outside a couple of center members 7a and 7b which array many optical fibers which have cores 5 and clads 6 at their outer peripheries. Further, a couple of external parts 8a and 8b which press the optical fibers 2 on the center members 7a and 7b are provided to the radial center parts of the center members 7a and 7b, and a positioning means is formed which position the center axes of the cores 5 of the optical fibers 2. Consequently, the plural optical fibers 2 are easily connected and, disconnected with low loss, thereby obtaining the multicore optical connector which enables the easy connection and disconnection of the optical fibers 2 with the low loss.

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