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1. 发明专利

JPS60127737A MANUFACTURE OF SEMICONDUCTOR DEVICE 失效
公开(公告)号：JPS60127737A
公开(公告)日：1985-07-08
申请号：JP23577183
申请日：1983-12-14
申请人： NIPPON TELEGRAPH & TELEPHONE , MATSUSHITA ELECTRIC IND CO LTD
发明人： SANO KOUICHI , YAMAGUCHI TSUTOMU , NOYORI MASAHARU , KONDOU SHIYUUJI , WADA TETSUAKI
IPC分类号： H01L21/60
摘要： PURPOSE:To obtain a semiconductor device which has a low cost and high reliability by allowing a substrate formed with a wiring pattern to stand in a gas discharge atmosphere to form a modified layer on the surface of an electrode wiring pattern, thereby improving the corrosion resistance of metal electrode wirings. CONSTITUTION:After an electrode wiring pattern 1 is formed on a semiconductor substrate 1, the substrate is allowed to stand in a gas discharge atmosphere to form a modified layer 6 on the surface of the pattern 1, lead conductors are bonded onto the layer 6, at least part of the layer 6 is damaged at the bonding time, and the pattern 1 and the lead conductor are electrically connected. For example, a silicon oxide film 4 is formed on a silicon substrate 3, and the pattern 1 is formed thereon. Then, when a discharge is executed with oxygen used as the gas, a thin alumina film 6 is formed to include the side of the aluminum wiring pattern. Since this thin uniform alumina 6 is readily damaged by a mechanical impact at the wire bonding, the film 6 can be directly wire bonded without removing in advance.

2. 发明专利

JPS60121829A TERMINAL DEVICE FOR SEARCHING FOR TROUBLE SECTION 失效
公开(公告)号：JPS60121829A
公开(公告)日：1985-06-29
申请号：JP22958483
申请日：1983-12-05
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SANO KOUICHI , WATANABE TAKAICHI , KUROSAWA MASAFUMI
IPC分类号： H04B10/07 , G01M11/00 , G01R31/08 , H04B10/00 , H04B10/077 , H04B17/40
摘要： PURPOSE:To rationalize the demarcation of a trouble and improve its efficiency by providing a wave selective reflecting filter on an optical cable transmission line, and transmitting a reflected signal to an optical cable and observing it. CONSTITUTION:When a trouble position is searched for, a monitoring and transmitting circuit 21 is actuated to send out a light signal with wavelength LAMBDA1. The reflected light from a reflecting filter 4 is detected by a terminal device 1 and when the detected level is normal, a light signal with wavelength LAMBDA2 is sent out. This light signal is reflected by a reflecting filter 5, and returned to and detected by terminal device. When the detected level is normal, it is judged that the optical cable transmission line 2 extending to the terminal device 3 is normal.

3. 发明专利

JPS60114095A LIGHT TRANSFER METHOD OF VIDEO SOUND COMPOUND SIGNAL 失效
公开(公告)号：JPS60114095A
公开(公告)日：1985-06-20
申请号：JP22159783
申请日：1983-11-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SANO KOUICHI , WATANABE TAKAICHI , SATOU KENICHI
IPC分类号： H04B10/00 , H04B10/2557 , H04N7/22
摘要： PURPOSE:To make it possible to enlarge the level ratio of the video signal and the sound signal and to reduce the deterioration of the transfer quality due to the mutual modulation distorsion by FM-modulating two different sound signals to two carriers consisting of the different frequency, by being made multiple with the video signal and after that, by transferring the light by means of the electrophoto conversion. CONSTITUTION:The 1st sound base band signal V1 is made multiple for the frequency with a control signal CONT which is AM-modulated to the carrier frequency of 55.1kHz, and is FM-modulated with the carrier frequency of 55.1kHz. The 2nd sound base band V2 is FM-modulated to the carrier frequency of 7.65MHz as it is. In short, the 1st sound signal V1, a control signal CONT and the 2nd sound signal are respectively FM-modulated with the different carrier frequency (6.5MHz and 7.65MHz), is made multiple for the frequency with a picture base band signal TV, is converted to the light signal and is transferred. As such, plural sound signals V1 and V2 are FM-modulated to the separate carrier frequency and are transferred, thereby largely improving the level ratio of the video signal and the sound signal to obtain the same transfer quality.

4. 发明专利

JPS5814115A THICK FILM OPTICAL CIRCUIT 失效
公开(公告)号：JPS5814115A
公开(公告)日：1983-01-26
申请号：JP11087281
申请日：1981-07-17
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SANO KOUICHI , WATANABE TAKAICHI
IPC分类号： G02B6/122 , G02B6/26 , G02F1/01
摘要： PURPOSE:To provide plural optical processing functions to a single thick film optical guide with a good efficiency, and match the coupling with optical fibers by providing a refractive index distribution to the core of the thick film optical guide thereby providing a focusing effect of light to the core. CONSTITUTION:The refractive index distribution of a semicircular columnar core 2 is uniform in the propagation axis direction of light, decreases in proportional to the square of the distance from the central axis of the column 2 within the section perpendicular to the propagation axis and is the same as that of a near parabolic circular columnar lens which is bisected at the plane inclusive of its central axis. Therefore, the ray from an input optical fiber 6 is bent of the optical path by the refractive index distribution of the core 2, repeats total reflection on the surface of a waveguide 1 (once in the figure), focuses again and is made incident to an output optical fiber 11. It is possible to provide plural optical processing functions in the single thick film optical guide by disposing optical function elements such as diffraction grating and filters in every surface position of the waveguide 1 where said ray reflects totally.

5. 发明专利

JPS58149018A OPTICAL MULTIPLEXER AND DEMULTIPLEXER 失效
公开(公告)号：JPS58149018A
公开(公告)日：1983-09-05
申请号：JP3203782
申请日：1982-03-01
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SANO KOUICHI , WATANABE TAKAICHI
IPC分类号： G02B6/293 , G02B6/34
摘要： PURPOSE:To have no unnecessary reflection surface by operating a titled device in wide wavelength bands by using short wavelength or long wavelength pass filters, forming the filters into one body, and positioning the filters properly. CONSTITUTION:The rays of wavelengths lambda1, lambda2, lambda3, lambda4 made incident from an input optical fiber 1 are converted to parallel rays by a lens 30, and these rays are made incident to a short wavelength pass filter (SWPF)7, or a long wavelength pass filter (LWPF)8. The rays of the wavelengths lambda1, lambda2 reflected by the SWPF7 or LWPF8 are made incident to a BPF61 of a transmission wavelength lambda1. Of the wavelengths lambda1, lambda2, the ray of the wavelength lambda1 transmits through the BPF61 and is outputted to an output optical fiber 21. The ray of the wavelength lambda2 reflected by the BPF61 transmits through a BPF62 of a transmission wavelength lambda2, and is outputted to an output optical fiber 22. On the other hand, the ray of the wavelength of the rays of the wavelength lambda3, lambda4 transmitted through the SWPF7 or LWPF8 is coupled to the fiber 22 and the ray of the wavelength reflected by a PBF63 is outputted to an output optical fiber 24. As a result, the rays incident from the fiber 1 are outputted respectively separately of their wavelength components.

6. 发明专利

JPS575013A OPTICAL MODE MIXER 失效
公开(公告)号：JPS575013A
公开(公告)日：1982-01-11
申请号：JP7944780
申请日：1980-06-12
申请人： NIPPON TELEGRAPH & TELEPHONE , OUYOU KOUDEN KENKIYUUSHITSU KK
发明人： SANO KOUICHI , HASHIMOTO KUNIO , AOSHIMA KENJI , ITOU TOMOYUKI
IPC分类号： G02B6/14 , G02B6/28
摘要： PURPOSE:To mix optical modes efficiently with simple and samll-sized construction by using a glass bar having random refractive index fluctuations internally. CONSTITUTION:The light which is made incident to a glass bar 5 having random refractive index fluctuations internally from an incident optical fiber 3 is bent randomly by Snell's law and emits at the angle differing from the incident angle at the output part of the glass bar. Since the angle of propagation in general corresponds to the numbers of the modes of the light propagating in a fiber, the change in this angle signifies mode conversion and this turns out that the light has received mode conversion in the glass bar. Further, the pass of beams of light takes random loci and therefore the optical path length varies with each incident mode and the phasss thereof are random as well. This glass bar is made by applying thermal strains to multicomponent type glass.

7. 发明专利

JPS58209710A MULTISTAGE OPTICAL DEMULTIPLEXING AND MULTIPLEXING CIRCUIT 失效
公开(公告)号：JPS58209710A
公开(公告)日：1983-12-06
申请号：JP9266882
申请日：1982-05-31
申请人： NIPPON TELEGRAPH & TELEPHONE , NIPPON SHEET GLASS CO LTD
发明人： WATANABE TAKAICHI , SANO KOUICHI , YAMAZAKI TETSUYA , OKUDA EIJI
IPC分类号： G02B6/28 , G02B6/34
摘要： PURPOSE:To perform optical redemultiplexing and remultiplexing, by arranging plural light guides having a uniform cross section nearly in a semicircle shape in parallel at intervals, arranging a couple of substrates so that their light guide exposure surfaces face each other, while a partially reflective and transmissive layer is interposed and closely arranged over the entire surfaces or necessary parts of the light guides and connecting a prescribed optical fiber to each light guide end part. CONSTITUTION:In an optical demultiplexing circuit, a light beam 14 from an input fiber 7 to a light guide 4A travels in a sine curve, and reaches the surface of a substrate 2A at an about 1/4-pitch position, where 50% of the beam is reflected by a semitransparent film 6; and the reflected beam travels in the same light guide and enters the other directly-connected fiber 12. The remaining light transmitted through the semitransparent film 6 travels in a light guides and then enters the other directly-connected fiber 13. The light entering the fiber 12 enters a light guide 3A and further travels similarly and is divided into two by the semitransparent film 6; and they enters optical fibers 10 and 11 respectively. The light entering the fiber 13, on the other hand, travels in a light guide 5B and is divided by the semitransparent film 6 into two, which enter output fibers 8 and 9 respectively.

8. 发明专利

JPS58106516A OPTICAL DEMULTIPLEXER 失效
公开(公告)号：JPS58106516A
公开(公告)日：1983-06-24
申请号：JP20519281
申请日：1981-12-21
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： WATANABE TAKAICHI , SANO KOUICHI
IPC分类号： G02B5/18 , G02B6/28 , G02B6/293 , G02B6/34 , G02B27/42 , G02B27/44
摘要： PURPOSE:To reduce an insertion loss of light, and also to reduce a crosstalk between each channel, by continuously varying a reflecting surface of a groove and a groove interval of a diffraction grating for diffracting the input light consisting of plural wavelength from an input optical fiber, at every wavelength, extending over the whole surface of the grating. CONSTITUTION:Input light consisting of plural wavelength from an input optical fiber 3 is diffracted by a different angle at every wavelength by a cylindrical surface diffraction grating 6, and is coupled with each optical fiber 4', 4''... of an output optical fiber 4 placed in a different position at every wavelength in advance, and a groove angle theta against a tangential line of each part of the cylindrical surface of the cylindrical surface diffraction grating 6 is set to an angle shown by the expressionIso that the reflecting surface of each groove changes its direction at every place and becomes vertical against an incident beam in each direction, and also a groove interval dx is set by continuously varying it to a groove interval shown by the expression II extending over the whole grating surface. In this way, all the beams of some wavelength, that are diffracted from each groove are converged to the end face of the optical fiber 4 in a position corresponding to this wavelength.

9. 发明专利

JPS5827334A SEMICONDUCTOR DEVICE 失效
公开(公告)号：JPS5827334A
公开(公告)日：1983-02-18
申请号：JP12547981
申请日：1981-08-11
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SANO KOUICHI , MATSUMOTO TADASHI
IPC分类号： H01L21/60
摘要： PURPOSE:To prevent corrosion of an exposed electrode at a wire boding pad part, by protecting the surface of the exposed electrode by covering the same with a nitride film or the like. CONSTITUTION:The semiconductor device comprises a silicon substrate 1, a thermal oxidation film 2, an Al electrode 3, a final passivation film 4 constituted by a nitride film, and a gold bonding wire 5. In a bonding pad part 3a, the passivation film 4 once formed is removed by etching to directly expose the electrode 3, to which the bonding wire 5 is connected. Then, the surface of the Al electrode 3 directly exposed around the wire 5 is plasma-nitrided to form a nitride film 6. It is possible to employ an oxide film in place of the nitride film.

10. 发明专利

JPS57116234A MEASURING METHOD FOR PHOTO LOSS 失效
公开(公告)号：JPS57116234A
公开(公告)日：1982-07-20
申请号：JP289681
申请日：1981-01-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SANO KOUICHI , OKADA KENJI , HASHIMOTO KUNIO
IPC分类号： G01M11/02 , G01M11/00
摘要： PURPOSE:To enable to perform a steady mode excitation, a high-precise measurement, and a non-destructive system measurement of an optical fiber to be measured, by using an optical fiber, whose core size is smaller than that of the optical fiber to be measured, as an exciter. CONSTITUTION:Light from a light source 1 is caused to enter an exciter consisting of a small-sized core optical fiber 2, light emitted from the small-sized core optical fiber 2 is caused to enter an optical fiber 3 to be measured. The length and core size of the exciter are selected so that a steady mode distribution can be obtained, and an output light power from the small-sized core fiber 2 is measured as an input light power to the optical fiber 3 to be measured to measure the photo loss of the optical fiber 3 by finding a difference between the input light power and an output light power from the optical fiber 3 to be measured. Once an incident light power to the optical fiber 3 to be measured is measured, it eliminates the need to measure the incident light power each time the optical fiber to be measured is replaced, but only an emitting light power may be measured.

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