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51. 发明专利

JPH10160977A OPTICAL MODULE 失效
公开(公告)号：JPH10160977A
公开(公告)日：1998-06-19
申请号：JP32441596
申请日：1996-12-04
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMADA YASUBUMI , INOUE YASUYUKI , ISHII MOTOHAYA , YANAGISAWA MASAHIRO , KATO KUNIHARU
IPC分类号： G02B6/42 , G02B6/122
摘要： PROBLEM TO BE SOLVED: To select optimally respective optical waveguide structures and parameters and to make possible producing it by respectively forming a passive optical circuit and a hybrid optical circuit on separate substrates and coupling these both. SOLUTION: This optical module consists of three parts of the passive optical circuit 10, the hybrid optical circuit 20 and an optical fiber block 5, and is constituted so as to integrate them. The passive optical circuit 10 and the hybrid optical circuit 20 are connected directly in their both end parts while holding optical coupling in a 1.3μm input/output waveguide 13 and a 1.3μm input/output waveguide 21. An inputting/outputting optical fiber 4a common to 1.3/1.55μm optical signals and an outputting optical fiber 4b of a 1.55μm optical signal are fixed/connected to the other side end part of the passive optical circuit 10 through the optical fiber block 5. In such a case, since the passive optical circuit 10 and the hybrid optical circuit 20 are formed respectively on different substrates 1, and thereafter, they are constituted so as to be connected to each other, respectively different optical waveguide parameters are adopted.

52. 发明专利

JPH10133046A OPTICAL ELEMENT PACKAGING SUBSTRATE AND HYBRID OPTICAL INTEGRATED CIRCUIT 失效
公开(公告)号：JPH10133046A
公开(公告)日：1998-05-22
申请号：JP28554896
申请日：1996-10-28
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： OOYAMA TAKAHARU , AKAHORI YUJI , YAMADA YASUBUMI , MINO SHINJI
IPC分类号： G02B6/13 , G02B6/122
摘要： PROBLEM TO BE SOLVED: To lower the floating capacity of optical element mounting sections, to assure fixing strength and to facilitate the mounting of plural optical elements by setting the height of first solder pattern surfaces on the surfaces of terrace parts higher than the height of the surfaces of second solder patterns on electrode parts. SOLUTION: The optical element mounting section 23 parts have the terrace parts (silicon terrace parts) 1a provided with projecting parts having flat front surfaces and recessed parts (electrode parts) 1b formed to be made lower than the front surfaces of the terrace parts 1a. Further, first ground surface metallic patterns and the first solder patterns 14 are successively laminated atop the terrace parts 1a. The surfaces of the electrode parts 1b include insulating film layers partly formed with apertures and these apertures and are formed with the electrode patterns successively laminated with such second ground surface metallic patterns to cover the wider regions and such solder patterns as to cover the wider regions. The height of the surfaces of the first solder patterns 14 on the terrace parts 1a is set higher than the height of the second solder pattern surfaces on the electrode parts 1b.

53. 发明专利

JPH1039151A OPTICAL WAVEGUIDE AND ITS PRODUCTION 失效
公开(公告)号：JPH1039151A
公开(公告)日：1998-02-13
申请号：JP19661696
申请日：1996-07-25
申请人： HITACHI CABLE , NIPPON TELEGRAPH & TELEPHONE , HITACHI LTD
发明人： YAMADA YASUBUMI , YANAGISAWA MASAHIRO , OKANO HIROAKI , HIGUCHI KEIICHI , UETSUKA NAOTO , TERAOKA TATSUO , AOKI SATOSHI , IWATO TAISUKE
IPC分类号： G02B6/122 , G02B6/13 , G02B6/132 , G02B6/136 , G02B6/42 , H01L27/15
摘要： PROBLEM TO BE SOLVED: To make it possible to suppress propagation loss low by disposing an auxiliary buffer layer between a core waveguide and a buffer layer. SOLUTION: The optical waveguide 1 is constituted by having the buffer layer 13 which has refractive index n0 and is embedded into a recessed part, the auxiliary buffer layer 14 which is formed on the buffer layer 13 and consists of a quartz glass film having refractive index n0 , the core waveguide 16 which is formed into a desired shape thereon and has refractive index n1 and a clad layer 17 which is formed thereon and has the refractive index n0 on an Si substrate 10 having a projecting part having an Si bench 11 formed on its front surface. The thickness of the auxiliary buffer layer 14 is preferably in the range of 0.1 to 10μm. An aperture 18 for exposing the Si bench 11 is formed by etching the clad layer 17 and the auxiliary buffer layer 14 in order to mount a semiconductor element, such as semiconductor light source or semiconductor photodetector, on the Si substrate 10. The auxiliary buffer layer 14 having the same refractive index as the refractive index of the buffer layer 13 is thus formed between the core waveguide 16 and the buffer layer 13.

54. 发明专利

JPH08234031A HYBRID WAVELENGTH MULTIPLEX OPTICAL MODULE 失效
公开(公告)号：JPH08234031A
公开(公告)日：1996-09-13
申请号：JP3524995
申请日：1995-02-23
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMADA YASUBUMI , AKATSU YUJI , SUZUKI SENTA , INOUE YASUYUKI , HATA SUSUMU
IPC分类号： G02B6/42 , G02B6/12 , H01L31/02 , H01L31/10 , H04B10/2507 , H04B10/40 , H04B10/50 , H04B10/60 , H04B10/02 , H04B10/28
摘要： PURPOSE: To provide a hybrid wavelength multiplex optical module with which the reduction of the number of constituting parts, the simplification of production stages and a cost reduction are realized. CONSTITUTION: This hybrid wavelength multiplex optical module includes at least a first optical waveguide, a waveguide type optical multiplexer/ demultiplexer 12 optically coupled to this first optical waveguide, second and third optical waveguides respectively optically coupled to two pieces of ports of the optical multiplexer/demultiplexer 12 on the side not optically coupled with the first optical waveguide and a photodetector 18 optically coupled with the second optical waveguide. The optical multiplexer/demultiplexer 12 has the characteristics to output the light of the first wavelength of the short wavelength of the light of the two different wavelengths entering from the first optical waveguide to the second optical waveguide and to output the light of the second wavelength of the long wavelength to the third optical waveguide. While the photodetector 18 has sensitivity with the light of the first wavelength, the photodetector has no sensitivity with the light of the second wavelength.

55. 发明专利

JPH08111600A HIGH-ACCURACY MOUNTING MARKER, HIGH-ACCURACY MOUNTING DEVICE AND METHOD 失效
公开(公告)号：JPH08111600A
公开(公告)日：1996-04-30
申请号：JP24387794
申请日：1994-10-07
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YOSHINO KAORU , YAMADA YASUBUMI
IPC分类号： B23P21/00 , G02B6/42 , G05D3/12 , H01L21/68 , H01L23/00 , H01S5/00 , H05K13/04 , H01S3/18
摘要： PURPOSE: To enable a board and parts to be fixed together in a short time and enhanced in fixing strength without carrying out a complex calculation of the position of a center of gravity by a method wherein the one height of a second parallelogrammic marker is larger than the length of the one opposed sides of a rectangular cutout of a first marker, and a mounting marker composed of the first and the second marker is used. CONSTITUTION: A junction layer 36 is provided on the underside of an LD chip 28, and an electrode pattern 43 where an angular cutout is provided is provided on the upside of the LD chip 28. A second marker 38 which is parallelogrammic and formed of infrared reflecting material is attached to both the sides of the junction layer 36. A first marker 37 is provided on a silicon board and provided with a rectangular cutout. The small height of the second parallelogrammic marker 38 is set larger than the length of the cutout of the first marker 37. The markers 38 are attached to both the sides of the junction layer 36 differing from each other in position by an angle of 90 deg., and the marker 37 is attached to the silicon board conforming in position to the marker 38.

56. 发明专利

JPH0815575A OPTICAL SIGNAL TRANSMISSION DEVICE 失效
公开(公告)号：JPH0815575A
公开(公告)日：1996-01-19
申请号：JP14956794
申请日：1994-06-30
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： AKAHORI YUJI , YAMADA YASUBUMI , MINO SHINJI , YANAGISAWA MASAHIRO
IPC分类号： G02B6/42
摘要： PURPOSE:To make it possible to emit an amplified light signal outside of a substrate by optically coupling the light signal propagating in an optical waveguide to a semiconductor light emitting element and putting this semiconduc tor light emitting element into a light emitting state. CONSTITUTION:The optical waveguide 4 composed of a core layer 2 and a clad layer 3 is formed on the substrate 1. A semiconductor laser 10 is so fixed onto such optical waveguide 4 (core layer 2) that the semiconductor substrate surface is brought into contact therewith. The light refractive index of the semiconductor substrate of the semiconductor laser 10 is set higher than the optical refractive index of the optical waveguide 4. As a result, the light signal propagating in the optical waveguide 4 is optically coupled to the semiconductor laser 10 of the high light refractive index arranged thereon. Further, laser oscillation is generated by the light signal entering from the optical waveguide 4 and the laser beam is emitted in the surface direction when a bias current to the extent of obviating the oscillation is kept passed between electrodes. Namely, the light signal amplified in the light intensity is emitted outside of the substrate.

57. 发明专利

JPH0815567A OPTICAL CONNECTOR 失效
公开(公告)号：JPH0815567A
公开(公告)日：1996-01-19
申请号：JP14817894
申请日：1994-06-29
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KATO KUNIHARU , IWANO SHINICHI , KANAYAMA KAZUNORI , NAGASE AKIRA , KOBAYASHI MASARU , YAMADA YASUBUMI , YOSHINO KAORU
IPC分类号： G02B6/36 , G02B6/24 , G02B6/30 , G02B6/40 , G02B6/42
摘要： PURPOSE:To provide a multi-fiber optical connector which is low in loss and low in reflection at the time of optically connecting optical fibers to each other or the optical fibers to an optical waveguide circuit. CONSTITUTION:The optical connector which connects the optical waveguides to each other and are attachable and detachable has the first and second optical fibers 4a, 4b as the optical waveguides and an aligning member 1 having aligning holes for aligning the first and second optical fibers 4a, 4b. Prescribed pressing force is applied on the first optical fibers 4a and second optical fibers 4b arranged to face each other in their axial direction and the fibers are inserted into the aligning holes 2 of the aligning members 1. The end faces of the first and second optical fibers 4a, 4b are brought into tight contact with each other in nearly the central part thereof.

58. 发明专利

JPH06334167A PHOTO-SEMICONDUCTOR ELEMENT INTEGRATED CIRCUIT DEVICE 失效
公开(公告)号：JPH06334167A
公开(公告)日：1994-12-02
申请号：JP14701293
申请日：1993-05-26
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YOSHINO KAORU , MINO SHINJI , YAMADA YASUBUMI , KATO KUNIHARU
IPC分类号： H01L27/04 , H01L21/822 , H01L27/15 , H01L33/62 , H01L33/00
摘要： PURPOSE:To prevent heat from being generated in an impedance matching resistor element or to eliminate an impedance matching resistor element by making the output impedance of a second driving signal adequately lower than the input impedance of a first driving signal. CONSTITUTION:A driving circuit device 3 has the output impedance of a second driving signal which is adequately lower than the input impedance of a first driving signal. Thereby, this photo-semiconductor element integrated circuit device can be so made as to have an adequately lower characteristic impedance as compared to the conventional one. For that reason, the value of an impedance matching resistor element 8 can be made considerably smaller as compared to the case of the conventional photo-semiconductor element integrated circuit device at the same input impedance of a photo-semiconductor element 6. Therefore, when the photo-semiconductor integrated circuit device is operated, heat is generated either almost not or very slightly in the input impedance matching element.

59. 发明专利

JPH06273630A HYBRID OPTICAL WAVEGUIDE CIRCUIT 失效
公开(公告)号：JPH06273630A
公开(公告)日：1994-09-30
申请号：JP5824293
申请日：1993-03-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TERUI HIROSHI , YAMADA YASUBUMI
IPC分类号： G02B6/00 , G02B6/12
摘要： PURPOSE:To accurately perform alignment in the direction perpendicular to the optical axis in a circuit face by fitting the overclad projecting part of a second optical waveguide circuit into the alignment groove of a first optical waveguide circuit. CONSTITUTION:An element mounting part of a first optical waveguide circuit 1 is provided with an alignment groove 1e, whose width is equal to the length of the bottom side of an overclad projecting part 2e of a second optical waveguide circuit 2, in parallel with the optical axis so that the position in the Y-axis direction of the center line coincides with the optical axis. The optical waveguide circuit 2 is inserted to the element mounting part of the optical waveguide circuit 1 with the circuit face turned down by such a rough adjustment that the projecting part 2e is approximately fitted into the alignment groove 1e. Oscillation is given to the optical waveguide circuit 2 while applying a load from above thereafter, and then, the optical. waveguide circuit 2 is settled at a dynamically stable point, and positions in X and Y directions of core parts 1c and 2c of optical waveguide circuits 1 and 2 automatically coincide with each other.

60. 发明专利

JPH0667041A OPTICAL WAVEGUIDE CIRCUIT MODULE AND WAVEGUIDE TYPE OPTICAL COMPONENT HAVING THE SAME 失效
公开(公告)号：JPH0667041A
公开(公告)日：1994-03-11
申请号：JP20803892
申请日：1992-08-04
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMADA YASUBUMI , HANAWA FUMIAKI , KATO KUNIHARU , INOUE YASUYUKI , OKUNO MASAYUKI , MARUNO TORU , YOSHIZAWA TETSUO , KIMURA TAKAO
IPC分类号： G02B6/122 , G02B6/12 , G02B6/30
摘要： PURPOSE:To obtain the optical waveguide circuit module with a low loss, a large reflection attenuation quantity, and a high mechanical strength where a large-sized optical waveguide circuit board whose curvature can not be ignored, can be mounted with no stress load by fixing part of the straight optical waveguide part of the optical waveguide circuit board to a holder by using a fixing agent. CONSTITUTION:The optical waveguide circuit board 1 is adhered to the holder at a light input waveguide part and a light output waveguide part, and an optical circuit part equipped with a branching function is not in contact with the holder 20. The holder 20 consists of a lower frame 21, spacers 22a-22d, and a pressure plate 23. To hold the board 1 on the holder 20, spacers 22a and 22b are adhered to both ends of a lower frame 21 with adhesives, the surfaces of the spacers 22a and 22b are coated with adhesives, and the board 1 is mounted thereupon and adhered. Both ends of the board 1 are coated with adhesives, spacers 22c and 22d are adhered, and the pressure plate 23 is mounted and adhered lastly to complete the optical waveguide circuit module.

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