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1. 发明专利

JPH08286075A WAVEGUIDE TYPE OPTICAL DEVICE 失效
公开(公告)号：JPH08286075A
公开(公告)日：1996-11-01
申请号：JP8576895
申请日：1995-04-11
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： YANAGAWA HISAHARU , SHIMIZU TAKEO , NAKAMURA SHIRO , SATO ETSUZO , MORINAKA AKIRA
IPC分类号： G02B6/30 , G02B6/00
摘要： PURPOSE: To provide a waveguide type optical module in which the temp. characteristic and the impact resistance characteristic of the bare module housed in the interior of a device are stable and whose moisture proofing characteristic is also satisfactory. CONSTITUTION: The waveguide type optical device has a constitution in which the bare module 8 constituted so that optical fibers 4a, 4b are connected via fiber blocks 5a, 5b being at the both ends of a waveguide chip 3 is encased in a protective case 10 whose both ends are opened and the opening parts 10a, 10b of the protective case 10 are sealed with corking bodies 12a, 12b, the bare module 8 is supported in the protective case 10 via elastic materials 11 while being supported at least by the waveguide chip 3 and at positions 3c, 3d other than connecting parts 7a, 7b of the fiber blocks 5a, 5b in this waveguide type optical module.

2. 发明专利

JPH08122528A OPTICAL FIBER BLOCK ARRAY FOR OPTICAL POWER MEASUREMENT 失效
公开(公告)号：JPH08122528A
公开(公告)日：1996-05-17
申请号：JP25540494
申请日：1994-10-20
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MORINAKA AKIRA , HANABUSA HIROAKI , SENDA KAZUNORI , OHIRA FUMIKAZU , KOYABU KUNIO , KUDO KAZUKI , MATSUNAGA KOJI , ATOBE NAOYUKI , NAKAO NAOKI
IPC分类号： G02B6/00 , H04B10/07 , H04B10/2507 , H04B10/08
摘要： PURPOSE: To provide an optical fiber block array for optical power measurement which reduces fluctuation of the measured value of the quantity of incident light and can increase the area of a light incidence part relatively to a single mode fiber. CONSTITUTION: The optical fiber block array 11 for optical power measurement consists of the optical fiber group, where plural optical fibers having a prescribed core diameter are two-dimensionally arranged, and individually measures the power of light transmitted in the optical fiber group, and each optical fiber is provided with an internal area 17 having a prescribed core diameter and an incidence-side end part area 16 having a core diameter larger than the prescribed core diameter.

3. 发明专利

JPH08114727A METHOD FOR ALIGNING PARTS TO EACH OTHER AND DEVICE THEREFOR 失效
公开(公告)号：JPH08114727A
公开(公告)日：1996-05-07
申请号：JP25048794
申请日：1994-10-17
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOYABU KUNIO , OHIRA FUMIKAZU , KUDO KAZUKI , MATSUNAGA KOJI , MORINAKA AKIRA , HANABUSA HIROAKI , SENDA KAZUNORI , ATOBE NAOYUKI , NAKAO NAOKI
IPC分类号： G02B6/42 , G02B6/30
摘要： PURPOSE: To make it possible to efficiently and simultaneously array plural parts with high accuracy at the time of aligning these parts to each other in assembly of optical parts or mechanical parts. CONSTITUTION: This device is composed of a forming section of a pair of bidirectional light beams arranged with two mechanical stages 11A, 11B which are mounted with mechanisms for controlling positions of a half mirror 15 for branching the laser beam from a laser 14 to two light beams and a reflection mirror 16 and are capable of adjusting six axes (three parallel axes of X, Y, Z and three angle axes of α, β, γ) in such a manner that these stages face each other, a mechanism section arranged with plural mechanical stages, such as array stage 12 or a stage 13 for waveguide substrates, which adjust the positions and attitudes of the parts placed on the mechanical stages 11A, 11B and to quantitatively measure the states thereof and are, capable of adjusting the six axes, an observation section consisting of a CCD camera 18 and monitor TV 19 for observing the places where the bidirectional light beams are cast to the parts and a personal computer 26 for storing the information of the respective mechanical stages and the images and adjusting the driving of the mechanical stages in accordance with such information.

4. 发明专利

JPH07318750A METHOD FOR CONNECTING OPTICAL PARTS 失效
公开(公告)号：JPH07318750A
公开(公告)日：1995-12-08
申请号：JP13131294
申请日：1994-05-20
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： SHIMIZU TAKEO , MINAMINO MASAYUKI , NAKAMURA SHIRO , YANAGAWA HISAHARU , SENDA KAZUNORI , MORINAKA AKIRA
IPC分类号： G02B6/30
摘要： PURPOSE:To provide a method for connecting optical parts which do not execute connection of the optical parts while the light loss quantity value between connecting end faces is large. CONSTITUTION:The light propagation loss L0a to L0h of an optical waveguide chip 13 are previously given to an arithmetic circuit 18 at the time of connecting single mode optical fibers 6 arranged in a plurality at a single mode fiber arranging means 1 and plural optical waveguides arranged at a waveguide chip 13. The intensity P0 of the light which is made incident from a light source 3 and is emitted from the exit side end faces of the single mode optical fibers 6 is determined and thereafter, the intensity P) of the light emitted from the exit side end faces of the optical waveguides is determined. The light loss L1 between the single mode optical fibers 6 and the end faces of the optical waveguides is determined by the equation L1=P0-P1L0. The single mode optical fibers 6 and the optical waveguides are connected and fixed when the value of the light loss L1 is within the range of the previously given permissible range of the light loss. A connection inadequateness signal is outputted when the light loss L1 exceeds the permissible range of the light loss.

5. 发明专利

JPH07248427A CONNECTING METHOD AND CONNECTING DEVICE FOR OPTICAL WAVEGUIDE AND OPTICAL FIBER 失效
公开(公告)号：JPH07248427A
公开(公告)日：1995-09-26
申请号：JP3886294
申请日：1994-03-09
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MORINAKA AKIRA , OGUCHI TAISUKE , HANABUSA HIROAKI , TAKATO NORIO , SENDA KAZUNORI
IPC分类号： G02B6/30
摘要： PURPOSE:To provide a connecting method which drastically shortens the time for an aligning operation by simplifying the intricate and repetitive aligning operation and a connecting device applying this method. CONSTITUTION:A connecting process is simulation operated on a computer 11 in accordance with data 13 of parts groups to be connected which are previously subjected to measurement of characteristics in the connecting method for an optical waveguide and optical fibers which connects and fixes a fiber array block 11 arrayed with the plural optical fibers and the optical waveguide 1. An alignment start port and connection loss are then estimated before the operation of an aligning and connecting device and the aligning port is changed over in accordance therewith, by which the optical fibers are aligned and connected.

6. 发明专利

JPH0475647B2 失效
公开(公告)号：JPH0475647B2
公开(公告)日：1992-12-01
申请号：JP6845684
申请日：1984-04-06
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MORINAKA AKIRA , OIKAWA SHIGERU
IPC分类号： C23F1/00 , G03F7/039 , H01L21/027 , H01L21/30

7. 发明专利

JPH04307584A VOLUME MULTIPLE HOLOGRAPHY DEVICE 失效
公开(公告)号：JPH04307584A
公开(公告)日：1992-10-29
申请号：JP7303891
申请日：1991-04-05
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MORINAKA AKIRA , YAGI IKUTAKE , HATAKEYAMA IWAO , SUGIYAMA YASUYUKI , NISHIDA YASUHIDE
IPC分类号： G03H1/26 , G11C13/04
摘要： PURPOSE:To record and reproduce the volume multiple holography at a high speed without adjusting an optical system and to improve the accuracy of the optical axis by arraying many laser light sources. CONSTITUTION:The luminous flux from a laser group 11 consisting of many laser light sources is split by optical systems 13 and 15 into plural pieces of luminous flux, which are guided to a storage element 12 to interfere with each other. At this time, part of luminous flux emitted at a different position of the laser group 11 is scattered by mutually different storage patterns 16 and then made incident on different positions of the storage element 12, so that the light is recorded as interference fringes of other parts. Namely, the light sources in the laser group are changed without the rotary movement of the storage element 12 nor the mechanical movement of the optical system, thereby obtaining the volume holography. In this case, a surface light emission laser diode array is used preferably as the laser group 11 and this laser diode array is formed by stacking light emission joint parts on, for example, a GaAlAs substrate and then machining the light emission joint parts into a columnar set by etching.

8. 发明专利

JPH03120579A MULTIPLE VOLUME HOLOGRAM ELEMENT 失效
公开(公告)号：JPH03120579A
公开(公告)日：1991-05-22
申请号：JP25779889
申请日：1989-10-04
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MORINAKA AKIRA , SUGIYAMA YASUYUKI , YAGI IKUTAKE , HATAKEYAMA IWAO
IPC分类号： G03H1/02 , G03H1/26
摘要： PURPOSE:To decrease the interference and interaction with other holograms and to improve reproduction efficiency by forming the multiple hologram element to a polygonal columnar or circular cylindrical shape and forming the central part of a recording medium of a material having a low recording sensitivity. CONSTITUTION:The multiple hologram element is formed in the polygonal columnar or circular cylindrical shape. Parts 15 where the recording sensitivity is high and the parts 16 where the recording sensitivity is low are formed within the volume of the recording medium 14. Parts 17 where interference fringes by the multiple recording of the holograms overlap are not generated in the central part as the central part of the hologram is formed as the low-sensitivity part in such a manner. The noises at the time of the reproduction of the holograms are thus decreased and the generation of the faults in recording and reproducing is prevented. The independent recording parts 18, 19 are wide and the volume of the medium 14 can be effectively utilized in the case of the execution of the multiple hologram recording. Since the parts are spacially separated, the output of a high resolution is obtd. at the time of the reproduction and the reproduction efficiency is improved.

9. 发明专利

JPH0381718A OPTICAL SWITCH ARRAY 失效
公开(公告)号：JPH0381718A
公开(公告)日：1991-04-08
申请号：JP21959589
申请日：1989-08-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MORINAKA AKIRA , YOSHIDA TAKUJI , KATOU KAORU , HATAKEYAMA ITSUKI
IPC分类号： G02B26/08 , G02B6/35
摘要： PURPOSE:To minimize the loss of incident light and to execute high-speed switching by providing volume hologram elements which emit incident lights to output optical paths based on the optical path information thereof in correspondence to each of respective input optical paths and providing plural rotating devices in these elements. CONSTITUTION:A stepping motor 231 of the optical switch 23-11 is rotated 90 deg. by a control system, not shown, in the case of switching the output optical path of the signal light by an optical fiber 22-11 from the optical fiber 22-11 of an output optical path array 22 to the optical fiber 22-21. The optical path information for the incident signal light is switched to the optical path information relating to the optical fiber 22-21 in this way. The incident signal light is, therefore, made into reflected and diffracted light by the volume hologram element 232-11 of the optical fiber switch 23-11 and is coupled to the incident end face of the optical fiber 22-21. The connecting and switching of the optical path are executed in such a manner. The loss of the incident light is minimized in this way and the high-speed switching is executed.

10. 发明专利

JPS63259851A OPTICAL RECORDING METHOD 失效
公开(公告)号：JPS63259851A
公开(公告)日：1988-10-26
申请号：JP9327887
申请日：1987-04-17
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YOSHIDA TAKUJI , MORINAKA AKIRA , FUNAKOSHI NORIHIRO
IPC分类号： B41M5/26 , G11B7/24 , G11B7/244
摘要： PURPOSE:To improve the recording density with use of an optical disk having a sealed structure excellent in the recording stability, by radiating the light to an organic compound to change the degree of orientation of the light irradiated area of said compound and recording the information. CONSTITUTION:A Cr film 2 serving as a laser light absorbing layer is vapor deposited to a polyethyrene film 1 which is optically active by itself with orientation of uniaxial stretching. Furthermore, the film 1 is fixed onto an annular substrate by adhesion, etc., as necessary for reinforcement of a disk. Then the laser light is radiated to a produced optical recording film via a photomagnetic recording head at the side of the film 1 so as to ensure a temperature higher than a glass transition point of polyethyrene and lower than a melting point of polyethyrene through control for recording a pit. Then, a reading task is carried out by laser and the recorded information can be read out because the orientation is lost at the part heated by irradiation of the laser light and the annular polarized reading light of said part is different from other parts. Thus, the recording density is improved with use of an optical disk which excels in the recording stability.

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