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1. 发明专利

JP2001083348A PACKAGE STRUCTURE FOR MOUNTING QUARTZ WAVEGUIDE 失效
公开(公告)号：JP2001083348A
公开(公告)日：2001-03-30
申请号：JP25595299
申请日：1999-09-09
申请人： HITACHI CABLE
发明人： MOROSAWA KENICHI , SHIDA MASAYUKI
IPC分类号： G02B6/122 , G02B6/12 , G02B6/293
摘要： PROBLEM TO BE SOLVED: To suppress deviation of the center wavelength characteristics in an array waveguide diffraction grating formed by a quartz waveguide, by connecting a first package with an attaching part through a stress absorbing means and thereby preventing the stress from being propagated to the fixed quartz waveguide. SOLUTION: The attaching part 8 is connected to the first package 4 through the stress absorbing means 10 constituted of a corrugated plate material. Because of this connection, when a mechanical stress is generated in the attaching part 8 due to a minute dimensional errors, warpage or the like of each package, the stress is relaxed and absorbed by the deformation of the corrugated stress absorbing means 10, in screw-fixing the first package 4 to a second package 6. As a result, the stress can be reduced which is propagated to the first package 4 and the array waveguide diffraction grating 2 of the quartz waveguide 3 fixed on the first package 4.

2. 发明专利

JP2001013336A OPTICAL WAVELENGTH MULTIPLEXER/DEMULTIPLEXER 失效
公开(公告)号：JP2001013336A
公开(公告)日：2001-01-19
申请号：JP18011899
申请日：1999-06-25
申请人： HITACHI CABLE
发明人： AKIBA KENJI , MOROSAWA KENICHI
IPC分类号： G02B6/12 , G02B6/293 , G02B6/34
摘要： PROBLEM TO BE SOLVED: To provide the optical wavelength multiplexer/demultipiexer wherein loss variations to wavelength variations of a light source are small and moreover stable multiplexing/demultiplexing of optical signals are possible. SOLUTION: An array waveguide diffraction grating 106, a sectorial inputting side slab waveguide 104 connecting an inputting channel waveguide 102 to the array waveguide diffraction grating 106, and a sectorial outputting side slab waveguide 107 connecting an outputting channel waveguide 108 to the array waveguide diffraction grating 106 are provided. The interval between the central axis of respective channel waveguides 105 constituting the array waveguide diffraction grating 106 and the central axis of respective adjacent channel waveguides 105 is gradually varied over the whole channel waveguides 105 in at least one side of the connecting part between the inputting side slab waveguide 104 and the array waveguide diffraction grating 106 or the connecting part between the outputting side slab waveguide 107 and the array waveguide diffraction grating 106.

3. 发明专利

JPH11344627A OPTICAL WAVELENGTH MULTIPLEXER/DEMULTIPLEXER 失效
公开(公告)号：JPH11344627A
公开(公告)日：1999-12-14
申请号：JP15500398
申请日：1998-06-03
申请人： HITACHI CABLE
发明人： AKIBA KENJI , INABA KIMIO , MOROSAWA KENICHI
IPC分类号： G02B6/12 , G02B6/293
摘要： PROBLEM TO BE SOLVED: To eliminate the fluctuation in insertion loss characteristic by change in wavelength by adopting a constitution in which the differences in lengths between respective adjacent channel waveguides are not the same throughout the entire part of the channel waveguides. SOLUTION: The differences of the lengths between the channel waveguide 514 and 515, between the channel waveguides 515 and 516, between the channel waveguides 545 and 546 and between the channel waveguides 546 and 547 are set smaller than the differences between the other adjacent channel waveguides 513 and 514, between the channel waveguide 547 and 548, etc. Namely, the array pitches of the channel waveguides 5 and the differences in the lengths between the respective adjacent channel waveguides of the case are so set that the differences in the lengths between the channel waveguide 514 and 515, between the channel waveguides 515 and 516, between the channel waveguides 545 and 546 and between the channel waveguides 546 and 547 are 0.5 times as compared with the differences in the lengths between the channel waveguide 514 and 515, between the channel waveguides 515 and 516, between the channel waveguides 545 and 546, between the channel waveguides 547 and 548 and the other adjacent channel waveguides. Consequently, there is no more fluctuation in the insertion loss characteristic by the wavelength change.

4. 发明专利

JPH09258049A FORMATION OF MODE FIELD CONVERSION OPTICAL WAVEGUIDE AND FORMING DEVICE THEREFOR 失效
公开(公告)号：JPH09258049A
公开(公告)日：1997-10-03
申请号：JP6428496
申请日：1996-03-21
申请人： HITACHI CABLE
发明人： MOROSAWA KENICHI , MATSUMOTO KAZUHISA
IPC分类号： G02B6/13
摘要： PROBLEM TO BE SOLVED: To provide a method and device for rapidly expanding the mode field of a quartz optical waveguide to a desired mode field at a low cost. SOLUTION: This device consists of a CO2 laser 1, a CO2 laser optical waveguide 2 which introduces the exit light from the CO2 laser 1 to the quartz optical waveguide 7 and controls the irradiation power quantity thereof and an optical waveguide element holder 3 which holds the quartz optical waveguide 7 in the position where the optical waveguide can be irradiated with the CO2 , laser light. The device has the optical waveguide element holder 3 which is capable of moving the quartz optical waveguide 7 at an arbitrary speed in the uniaxial direction in at least a horizontal direction and a lens 4 which condenses the CO2 laser light to the quartz optical waveguide 7. In addition, the device has a lens driving mechanism 5 which is capable of changing the spacing between the lens 4 and the quartz optical waveguide 7 at an arbitrary speed.

5. 发明专利

JPH05341142A 失效
公开(公告)号：JPH05341142A
公开(公告)日：1993-12-24
申请号：JP15228292
申请日：1992-06-11
申请人： HITACHI CABLE
发明人： MOROSAWA KENICHI
IPC分类号： G02B6/122 , G02B6/12 , G02B6/255 , G02B6/30
摘要： PURPOSE:To provide the quartz waveguide type optical part, in which a connection part is fused sufficiently to obtain the high mechanical strength without a large quantity of loss. CONSTITUTION:In a quartz waveguide type optical part, which is provided with a core made of quartz group material and clads provided in the surrounding of the core 14 and made of the quartz group material having a refractive index smaller than that of the core 14 and which is to be connected to an optical fiber by carbon dioxide gas laser beam, clads 12, 13, 15 consist of at least two layers having different absorption coefficients against the carbon dioxide gas laser beam.

6. 发明专利

JPH05150124A SAFETY DEVICE OF WAVEGUIDE FOR LARGE-POWER LASER TRANSMISSION 失效
公开(公告)号：JPH05150124A
公开(公告)日：1993-06-18
申请号：JP31489791
申请日：1991-11-28
申请人： HITACHI CABLE
发明人： MATSUMOTO KAZUHISA , MOROSAWA KENICHI
IPC分类号： B23K26/064 , G02B6/02 , G02B6/032 , G02B6/10 , H01S3/10
摘要： PURPOSE:To prevent the destruction at the end of a hollow waveguide by irradiation with a large-power laser beam. CONSTITUTION:A reflection surface 14 which reflects the laser beam cast to the parts exclusive of the laser beam transmission region and a photodetecting member 3 for detecting the reflected laser beam are provided at the end of the waveguide 5 for transmitting the laser beam emitted from a laser oscillator 1. A temp. sensor 11 is provided on the photodetecting member 3 and a laser output controller 13 which decreases or stops the output of the laser oscillator 1 when the detected temp. exceeds a set temp. is connected to this temp. sensor 11.

7. 发明专利

JPH04238690A CONNECTING STRUCTURE FOR HOLLOW OPTICAL WAVEGUIDE 失效
公开(公告)号：JPH04238690A
公开(公告)日：1992-08-26
申请号：JP1376791
申请日：1991-01-11
申请人： HITACHI CABLE
发明人： MOROSAWA KENICHI
IPC分类号： G02B6/24
摘要： PURPOSE:To suppress the generation of higher modes by scattering and to improve waveguide efficiency at a low loss. CONSTITUTION:The end faces of respective hollow optical waveguides 1, 2 having the inside diameters varying from each other are butted and connected against and to each other. The waveguides 1, 2 are formed respectively to the same diameter and a connecting sleeve 4 having the inside diameter slightly larger than the outside diameter of the hollow optical waveguides 1, 2 is preferably provided in the butt parts thereof. Further, the difference between the inside diameters of the waveguides 1, 2 is preferably set larger than the difference between the outside diameter of the hollow optical waveguides 1, 2 and the inside diameter of the connecting sleeve 4 so that the deviation between the waveguides 1 and 2 in the connecting sleeve 4 does not exceed the difference between the inside diameters. In addition, the hollow optical waveguides 1, 2 are preferably so connected that the inside diameter increases gradually in the direction where light energy is transmitted.

8. 发明专利

JPH032804A STRUCTURE OF DIELECTRIC INCORPORATED METALLIC HOLLOW WAVEGUIDE 失效
公开(公告)号：JPH032804A
公开(公告)日：1991-01-09
申请号：JP13616389
申请日：1989-05-31
申请人： HITACHI CABLE
发明人： MOROSAWA KENICHI , SHIODA TSUNEO , HONGO AKISHI
IPC分类号： G02B6/02 , G02B6/032
摘要： PURPOSE:To transmit the greater part of a reflected light without coupling it in a hollow optical waveguide, and also, without nearly deteriorating the transmission efficiency from the incident direction by setting thickness of a dielectric to thickness for giving the minimum loss on the incident side, and also, setting it to thickness shifted from the thickness for giving the minimum loss on the emitting side. CONSTITUTION:Thickness of a dielectric of a dielectric incorporated metallic hollow waveguide is set so that it becomes the minimum loss only on the incident end side, and set to thickness shifted from the film thickness for giving the minimum loss on the emitting end side. For instance, a Ge incorporated Ag/Ni hollow optical waveguide 1 for a CO2 laser light of 10.6mu wavelength is manufactured by incorporating an Ag film 5 of uniform thickness on the inside of an Ni layer 6, and also, incorporating interiorly Ge films 3, 4 of different thickness on its inside. In such a way, the coupling loss is small against an incident light, and the coupling loss becomes large against a reflected light.

9. 发明专利

JPH02162302A HOLLOW LIGHT GUIDE BODY AND PRODUCTION THEREOF 失效
公开(公告)号：JPH02162302A
公开(公告)日：1990-06-21
申请号：JP31647688
申请日：1988-12-16
申请人： HITACHI CABLE
发明人： MOROSAWA KENICHI , HONGO AKISHI , SHIODA TSUNEO
IPC分类号： G02B6/02 , B23K26/064 , G02B6/032 , H01S3/101
摘要： PURPOSE:To obtain the hollow light guide having excellent mechanical strength and heat conduction by integrating at least >=2 pieces of hollow pipes with the hollow light guide axially on the outer periphery of the hollow light guide which transmits light energy. CONSTITUTION:Al pipes 3, 4 having respectively 1.5mm outside diameter and 1.1m and 1.05m length are tightly adhered by Al foil 5 and are provided axially on the outer periphery of the Ni hollow light guide 2 which has 1.5mm inside diameter and 1.2m length and contains Ge 1. The apertures at both ends of the Al pipes 3, 4 and the lower apertures of the hollow light guide 2 are hermetically closed by sealing tapes 6. This assembly is immersed in a watt bath 7 kept at 45 deg.C and is energized with an Ni electrode 8 by 4A/dm density for 4 hours to form an Ni plating layer of a sufficient thickness. The sealing tapes 6 are then peeled and the assembly is immersed in a caustic soda to etch away the the Al pipes 3, 4. The hollow light guide integrated with the Ni hollow pipes usable as water cooling pipes on the outer periphery of the hollow light guide 2 made of the Ni contg. the Ge is formed. The hollow light guide having the good mechanical strength and heat conductivity is thereby obtd.

10. 发明专利

JPH02113207A LASER LIGHT TRANSMITTER 失效
公开(公告)号：JPH02113207A
公开(公告)日：1990-04-25
申请号：JP26598488
申请日：1988-10-24
申请人： HITACHI CABLE
发明人： HONGO AKISHI , MOROSAWA KENICHI , SHIODA TSUNEO
IPC分类号： G02B6/02 , A61B18/20 , B23K26/064 , G02B6/032
摘要： PURPOSE:To obtain the laser light transmitter of simple constitution with high safety by securely detecting the temperature rise of a metallic hollow optical waveguide from variation in measured resistance value. CONSTITUTION:A metallic protection pipe 1 and the metallic hollow optical waveguide 2 are insulated with heat-resisting and thermosetting metal resin and connected electrically in series and if the temperature of the waveguide rises owing to breakage, etc., the total resistance value of the series circuit rises abnormally. The measured electric resistance value, therefore, exceeds the specific value of a controller 6 and a stop signal is sent to a laser light source device to cut of laser light propagated in the hollow optical waveguide 2. Consequently, the high-safety laser light transmitter of simple constitution is obtained.

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