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1. 发明专利

JP2003240986A OPTICAL WAVEGUIDE MODULE 审中-公开
公开(公告)号：JP2003240986A
公开(公告)日：2003-08-27
申请号：JP2002038605
申请日：2002-02-15
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SAWAMURA TAKESHI , WATANABE TOMOHIRO , OTA TOSHIHIKO , SAITO TSUNEAKI
IPC分类号： G02B6/12 , G02F1/01
摘要： PROBLEM TO BE SOLVED: To provide an optical waveguide module in which the temperature of an optical waveguide chip is stably adjusted with small power consumption. SOLUTION: The optical waveguide module is provided with the optical waveguide chip 9 having an optical waveguide circuit for which light transmission characteristics are changed at least by the temperature, such as an array waveguide diffraction grating, and a temperature adjusting module 8 having at least one of a heat generating function and a heat absorbing function to adjust the temperature of the optical waveguide chip 9. The optical waveguide chip 9 and the temperature adjusting module 8 are piled up while shifting the center position C2 of the temperature adjusting module 8 and the optical waveguide circuit center position C1 of the optical waveguide chip 9 and the temperature adjusting module 8 and the optical waveguide chip 9 are directly joined. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2001074980A OPTICAL FIBER ARRAY PARTS, THEIR MANUFACTURING METHOD AND CONNECTING METHOD BETWEEN OPTICAL FIBER USING THE PARTS AND OPTICAL WAVE GUIDE AND OPTICAL MODULE USING THE PARTS 失效
公开(公告)号：JP2001074980A
公开(公告)日：2001-03-23
申请号：JP2000206108
申请日：2000-07-07
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SAITO TSUNEAKI , OTA TOSHIHIKO
IPC分类号： G02B6/40 , G02B6/30
摘要： PROBLEM TO BE SOLVED: To provide optical fiber array parts capable of connecting, at a low connecting loss, optical waveguides and optical fibers, which are arrayed in an optical waveguide circuit. SOLUTION: As shown in (a), on a guide base plate 1 an which 32 pieces of V-grooves 9 are formed, a holding placed which holds optical fibers 3 inserted into the V-groves 9, the guide base plate 1 and the holding plate 4 are bonded with an adhesive 5, on the optical fiber array parts 7, a camber of amount of camber B is formed in the array direction of the optical fibers 3, by means of a contracting stress at the time of hardening of the adhesive 5, as shown in (b), and the array shape is curved by the camber at least on the connecting end face side of the optical fibers 3. The optical fiber array parts 7 are formed correspondingly to the camber of the optical waveguide circuit on the opposite connecting side, roughly making the connecting end face of the optical waveguide in the optical wave guide circuit coincide with the corresponding connecting end face of the optical fibers 3.

3. 发明专利

JP2000121847A OPTICAL WAVELENGHT MULTIPLEXING AND DEMULTIPLEXING DEVICE 失效
公开(公告)号：JP2000121847A
公开(公告)日：2000-04-28
申请号：JP31543998
申请日：1998-10-19
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SAITO TSUNEAKI , OTA TOSHIHIKO
IPC分类号： G02B6/12
摘要： PROBLEM TO BE SOLVED: To provide an optical wavelength multiplexing/demultiplexing device in which the wavelength dependence in the vicinity of the maximim value of the light intesity in output lights is small and a high-quality optical wavelength multiplex communication can be attained. SOLUTION: A light to be inputted from an optical input part 10 is branched into two lights and the branched lights are received by a first light transmission element 1 and a second light transmission element 2 which are constituted with array waveguide diffraction gratings respectively and transmitted lights through the first and second light transmission elements 1, 2 are multiplexed in optical couplers 4a1 to 4an and multi-plexed lights are outputted from optical output parts 5a1 to 5an, Then, the wavelength dependence in the vicinity of the maximum value of the light intensity in the multiplexed lights ia made small by making light transmission characteristics (wavelength characteristics) of the elements 1, 2 to be characteristics in which transmissivities are lowered as wavelengths deviate from center wavelengths around preliminarily determined center wavelengths and by shifting transmission center wavelengths of respective plural lights transmitted through the first light transmission element 1 from transmission center wavelengths of respective plural lights transmitted through the second light transmission element 2.

4. 发明专利

JP2000081523A THIN TYPE OPTICAL WAVEGUIDE MODULE 失效
公开(公告)号：JP2000081523A
公开(公告)日：2000-03-21
申请号：JP17704299
申请日：1999-06-23
申请人： FURUKAWA ELECTRIC CO LTD
发明人： TORATANI TOMOAKI , YAMAMOTO TOSHIRO , SAITO TSUNEAKI , SHINTOMI KOICHI
IPC分类号： G02B6/122
摘要： PROBLEM TO BE SOLVED: To save a space from the viewpoint of an arrangement by making it possible to properly control the temperature of a planer optical waveguide part even if it is thin-type. SOLUTION: This module 1 is a thin type optical waveguide module which is provided at least with planar optical waveguide parts 2, a temperature sensor 5 to detect the temperatures of the planer optical waveguide parts, a 1st plane 6a and a 2nd plane 6b and houses a temperature control element 6 to control the temperature of the planar optical waveguide parts inside a package 7. Here, the temperature control element 6 is arranged so that the 1st plane 6a is brought in close contact with the inner face of the package 7 via a 1st heat conductive material and the 2nd plane 6b is brought in close contact with the planar optical waveguide parts 2 via a 2nd heat conductive material, respectively and a thermal insulation layer LI is formed between the planar optical waveguide parts and the package in the direction of the thickness of the package 7.

5. 发明专利

JP2003149501A OPTICAL FIBER ARRAY AND OPTICAL WAVEGUIDE CIRCUIT MODULE USING THE OPTICAL FIBER ARRAY 审中-公开
公开(公告)号：JP2003149501A
公开(公告)日：2003-05-21
申请号：JP2001347796
申请日：2001-11-13
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SAITO TSUNEAKI , HASEGAWA JUNICHI , TANAKA KANJI , KASHIWABARA KAZUHISA
IPC分类号： G02B6/36 , G02B6/122
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber array whose warping is reducible even if the number of optical fiber arrays is large and has a small loss of connection with a connection opposite-side optical component. SOLUTION: The optical fiber array 1 has a guide substrate 23 where a plurality of optical fiber array guide grooves 9 are arranged at array intervals nearly twice as large as, for example, the diameter of an optical fiber 7 and optical fibers 7 which are inserted into the optical fiber array grooves 9 of the guide substrate 23. The total number of the optical fiber array guide grooves 9 is >=20 and the guide substrate 23 is >=1.10 mm thick. The guide substrate 23 is made thicker continuously or stepwise as the total number of the optical fiber array guide grooves 9 increases.

6. 发明专利

JP2003149495A OPTICAL FIBER ARRAY AND OPTICAL WAVEGUIDE CIRCUIT MODULE USING THE OPTICAL FIBER ARRAY 审中-公开
公开(公告)号：JP2003149495A
公开(公告)日：2003-05-21
申请号：JP2001350201
申请日：2001-11-15
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KASHIWABARA KAZUHISA , SAITO TSUNEAKI , HASEGAWA JUNICHI
IPC分类号： G02B6/24 , G02B6/30
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber array excellent in environment-resistant characteristics and an optical waveguide circuit module using the optical fiber array. SOLUTION: In this optical fiber array 1 having a guide substrate 23, wherein a plurality of optical fiber arrangement guide grooves 9 are arranged, for example, at an arrangement pitch about two times as long as the diameter of the optical fiber 7, and the optical fibers 7 inserted into the optical fiber arrangement guide grooves 9 of the guide substrate 23 when the arrangement direction of the optical fiber arrangement guide grooves is defined as an X direction, distances D1 and D2 in the X direction between both side faces 12 and 13 of the optical fiber array 1 and the groove end positions of the optical fiber arrangement guide grooves 9 (9a and 9b) arranged closest to the respective side faces 12 and 13 on the side of the respective side faces 12 and 13 are both defined as >=0.8 mm.

7. 发明专利

JP2002333541A OPTICAL MODULE 失效
公开(公告)号：JP2002333541A
公开(公告)日：2002-11-22
申请号：JP2001136874
申请日：2001-05-08
申请人： FURUKAWA ELECTRIC CO LTD
发明人： HASEGAWA JUNICHI , SAITO TSUNEAKI
IPC分类号： G02B6/30 , G02B6/36 , G02B6/42
摘要： PROBLEM TO BE SOLVED: To provide an optical module which reduces optical insertion loss of optical fibers, in a temperature range in use, and which protects optical characteristics against deterioration and damage due to vibration and shock. SOLUTION: In the optical module 1, optical fibers 4 are connected to optical parts 2 stored in a package 5, are drawn out of the package 5 via through-holes 5a drilled in the package 5, and are fastened to the optical fiber fixing part 5b of the package 5. In this case, the optical fibers 4 are fastened to the optical fiber fixing part 5b, the temperature of which is 0-30 deg.C lower than the upper limit of the temperature range in use of the optical parts 2.

8. 发明专利

JP2002031729A ARRAY WAVEGUIDE DIFFRACTION GRATING TYPE OPTICAL MULTIPLEXER/DEMULTIPREXER 失效
公开(公告)号：JP2002031729A
公开(公告)日：2002-01-31
申请号：JP2000214684
申请日：2000-07-14
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KASHIWABARA KAZUHISA , NARA KAZUTAKA , NEKADO MASANOBU , SAITO TSUNEAKI
IPC分类号： G02B6/12 , G02B6/293 , G02B6/34
摘要： PROBLEM TO BE SOLVED: To make dissolvable temperature dependency of a light transmission central wavelength in an array waveguide diffraction grating and to make the increase of an insertion loss suppressible even under a condition of a high temperature and a high humidity with a simple constitution. SOLUTION: A waveguide forming area 10, wherein a light input waveguide 2, a first slab waveguide 3, plural juxtaposed array waveguides 4 having mutually different lengths, a second slab waveguide 5 and plural juxtaposed light output waveguides 6 are connected in order, is formed on a substrate 1. The first slab waveguide 3 is separated in a cross separating surface 8 which crosses an optical path passing through the first slab guide 3. A matching grease is provided in the cross separating surface 8, and the evaporation of the matching grease is suppressed by providing a thin film member 40 covering the disposing area of the matching grease.

9. 发明专利

JP2001330739A ARRAY WAVEGUIDE TYPE DIFFRACTION GRATING 失效
公开(公告)号：JP2001330739A
公开(公告)日：2001-11-30
申请号：JP2000149684
申请日：2000-05-22
申请人： FURUKAWA ELECTRIC CO LTD
发明人： NEKADO MASANOBU , SAITO TSUNEAKI , NARA KAZUTAKA , KASHIWABARA KAZUHISA
IPC分类号： G02B6/12
摘要： PROBLEM TO BE SOLVED: To provide an array waveguide type diffraction grating wherein a light transmission central wavelength does not depend on an ambient temperature in use, and a loss and wavelength multiplexing/demultiplexing characteristics are stable. SOLUTION: A waveguide forming area 10 which connects in order a light input waveguide 2, a first slab waveguide 3, plural juxtaposed array waveguides 4 having respectively different lengths, a second slab waveguide 5, and plural juxtaposed light output waveguides 6 is formed on a single crystal substrate 1. A cleaved and separated surface 80 is formed by cleavage along the crystal orientation surface of the substrate 1 so as to cross the path of light passing through the first slab waveguide 3 to separate by cleaving the first slab waveguide 3. The separated slab waveguide 3b side is fixed to a base 9, and the separated slab waveguide 3a side is fixed to the base 9 so as to freely slide and move via a high thermal expansion coefficient member 7. The high thermal expansion coefficient member 7 is expanded and contracted more largely than the base 9 in accordance with the change of the ambient temperature in use, and the separated slab waveguide 3a side is slid and moved in the direction of arrows A, B along the cleaved and separated surface 80.

10. 发明专利

JP2001305361A ARRAY WAVEGUIDE TYPE DIFFRACTION GRATING AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2001305361A
公开(公告)日：2001-10-31
申请号：JP2000127179
申请日：2000-04-27
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SAITO TSUNEAKI , KASHIWABARA KAZUHISA , NARA KAZUTAKA , NAKAJIMA TAKESHI
IPC分类号： G02B6/12 , G02B6/13 , G02B6/293
摘要： PROBLEM TO BE SOLVED: To provide an array waveguide type diffraction grating capable of setting a light transmission central wavelength into a set wavelength by correcting a shift between the light transmission central wavelength and the set wavelength of an array waveguide type diffraction grating. SOLUTION: A waveguide forming part 10, which is formed by connecting in order a light input waveguide 2, a first slab waveguide 3, plural juxtaposed array waveguides 4 mutually different in length, a second slab waveguide 5 and plural juxtaposed light output waveguides 6, is formed on a substrate 1. The first slab waveguide 3 is cut and separated by a cutting surface 8 which crosses the path of light passing through the first slab waveguide 3, and the waveguide forming area 10 is also separated into a first waveguide forming area 10a and a second waveguide forming area 10b. Cut surfaces 8 of separated slab waveguides 3a, 3b are mutually faced and are connected in the state that the positions of the separated slab waveguides are shifted in the direction of the substrate surface along the cut surfaces 8.

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