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71. 发明专利

JPS6425108A OPTICAL DEVICE 失效
公开(公告)号：JPS6425108A
公开(公告)日：1989-01-27
申请号：JP18264887
申请日：1987-07-22
申请人： FUJITSU LTD
发明人： NODA HIDEKI
IPC分类号： G02B6/30 , G02B6/32 , G02B6/34
摘要： PURPOSE:To make the insertion loss of an optical device small and to obtain stable performance by using a part of a transparent body substrate as a lens and fitting ferrules in a groove formed in the transparent body substrate and an optical elements in holes. CONSTITUTION:End surfaces of the ferrules 10-1, 10-2 and 10-3 are positioned at the focuses of spherical lenses 30-1, 30-2 and 30-3 respectively. Then the optical film 2A of the optical device is, for example, a filter film, a light beam emitted by an optical fiber 5-1 is made into a parallel light beam through the spherical lens 30-1 and reaches an optical film element 2 through a projection part 27-1. Then light in a selected wavelength range is transmitted through the element 2 to reach the lens 30-2 through a projection part 27-2, and converged on an end surface of a fiber 5-2 through the lens 30-2 to enter the fiber 5-2. Here, light in the other wavelength range which is reflected by the element reaches a lens 30-3 through a projection part 27-3, and is converged on the end surface of the optical fiber 5-3 to be projected to the optical fiber 5-3.

72. 发明专利

JPS6360410A OPTICAL DEVICE 失效
公开(公告)号：JPS6360410A
公开(公告)日：1988-03-16
申请号：JP20537086
申请日：1986-09-01
申请人： FUJITSU LTD
发明人： NODA HIDEKI , KUNIKANE TATSURO , NAGANUMA NORIHISA , KUSAKA SATOSHI
IPC分类号： G02B6/122 , G02B6/13 , G02B6/30 , G02B6/34
摘要： PURPOSE:To obtain an optical device of a low cost, whose coupling loss is small, and also, whose coupling degree is stable, by constituting this device of a projecting piece with an optical film, which has been formed on the surface of a substrate, and plural optical waveguides which have been formed on the surface of the substrate, so as to be brought to optical coupling through the projecting piece with an optical film. CONSTITUTION:An optical device is constituted of a projecting piece with an optical film, consisting of a transparent thin square-shaped projecting piece 21 which has been formed by etching on the surface of a substrate 40 consisting of a transparent body, and an optical film 22 which has been formed on the side face of the square- shaped projecting piece 21, and plural optical waveguides 1, 2 and 3 which have been formed on the surface of the substrate 40 so as to be brought to optical coupling through the optical film 22. Since the square-shaped projecting piece 21 is formed by an etching means, it is formed thinly enough, and also, an angle of a plane vision has high accuracy. Also, the respective optical waveguides form a desired dielectric film on the surface of the substrate 40, and thereafter, can be formed by the etching means. Accordingly, the respective optical waveguides adhere closely to the side face of the projecting piece with an optical film 20.

73. 发明专利

JPS62299917A WAVEGUIDE-GRATING TYPE OPTICAL MULTIPLEXER AND DEMULTIPLEXER AND ITS PRODUCTION 失效
公开(公告)号：JPS62299917A
公开(公告)日：1987-12-26
申请号：JP14428086
申请日：1986-06-20
申请人： FUJITSU LTD
发明人： NODA HIDEKI , KUSAKA SATOSHI
IPC分类号： G02B6/293 , G02B6/34
摘要： PURPOSE:To constitute an optical multiplexer/demultiplexer without executing the aligning of respective parts at the time of production by unitedly forming an optical waveguide part, an optical fiber supporting part and a grating part supporting part on a substrate. CONSTITUTION:The titled optical multiplexer/demultiplexer is constituted of a waveguide element forming a projected face on one side wall 26A of a waveguide constituting element formed on the center part of the substrate 20 and forming plural photoconductor arranging grooves 28 on the substrate surface on the opposite side of the side wall 26A, photoconductors 30 fixed on the plural grooves 28 and a grating part 32 having light reflecting periodical grooves 32B on a recessed wall surface 32A engaged and fixed with a projected wall surface on the substrate surface 27 of the side wall 26A side. Consequently, production can be attained without accurate aligning, so that characteristic deterioration can be suppressed, the production cost can be reduced and the mass-productivity can be improved.

74. 发明专利

JPS62299805A OPTICAL COUPLER FILM 失效
公开(公告)号：JPS62299805A
公开(公告)日：1987-12-26
申请号：JP14363986
申请日：1986-06-19
申请人： FUJITSU LTD
发明人： KUSAKA SATOSHI , NODA HIDEKI
IPC分类号： G09G3/20 , G02B5/00 , G02B5/28 , G06F3/041 , G06F3/044 , G09G3/36
摘要： PURPOSE:To obtain an optical coupler film having the transmittance which is constant over a wide wavelength range by forming a 1st layer counted from a substrate side of TiO2 and a 2nd layer of SiO2, respectively, and forming the 1st layer to have a small film thickness and the 2nd layer to have an approximately equal film thickness with respect to the thickness of 1/4 the central wavelength for designing the coupler film. CONSTITUTION:This coupler film consists of the 1st layer and 2nd layer counted from the substrate side. The 1st layer 2 is made of the TiO2 which is a high refractive index material and the 2nd layer 3 is made of the SiO2 which is a low refractive index material. The 1st layer 2 is formed to 0.42-0.44 film thickness and the 2nd layer 3 to 0.98-1.02 film thickness with respect to 1/4 the central wavelength for designing the coupler film. The respective rays of the reflected light at the boundary face are added and joined to and with the reflected light of the same phase by the interference with each other by most adequately designing the film thicknesses of the 1st layer and the 2nd layer in the above-mentioned manner. The prescribed reflectivity and transmittance are thus obtd. over the wide wavelength range.

75. 发明专利

JPS61275626A MEASURING METHOD FOR POLARIZATION SEPARATION DEGREE 失效
公开(公告)号：JPS61275626A
公开(公告)日：1986-12-05
申请号：JP11803485
申请日：1985-05-31
申请人： FUJITSU LTD
发明人： NODA HIDEKI , KUSAKA SATOSHI , HOTTA MIKIO
IPC分类号： G01J4/00
摘要： PURPOSE:To measure the degree of polarization separation within a necessary wavelength range by simple constitution by varying the angle of incidence of light incident on a polarization separating film to be measured from a single wavelength light source and measuring continuous wavelength characteristics of the degree of polarization separation. CONSTITUTION:A P wave shown in a figure shifts in wavelength by - 56nm when the angle of incidence varies by 3 deg. and an S wave shifts in wavelength by - 25nm when the angle of incidence varies by 3 deg.. Therefore, this method calculates transmissivity to different wavelengths by varying the angle of incidence. Namely, transmitted light P and reflected light P' are measured while the angle of incidence of P wave incident light P0 incident on the polarization separating film (f) is varied. In another way, transmitted light S7 and reflected light S are measured while the angle of incidence of S wave incident light S0 incident on the polarization separating film (f) is varied. When the same incident light beam is used, namely, when P0=S0, the degree of P wave polarization separation and the degree of S wave separation are -10logP'/S and -10logS'/P respectively.

76. 发明专利

JPS6152449B2 失效
公开(公告)号：JPS6152449B2
公开(公告)日：1986-11-13
申请号：JP15862178
申请日：1978-12-25
申请人： FUJITSU LTD
发明人： TERAI SEIJI , KURITA SHOICHI , NODA HIDEKI , ISHIKAWA TAKASHI , MITA FUMIO
IPC分类号： G02B26/08 , G02B6/35

77. 发明专利

JPS6152448B2 失效
公开(公告)号：JPS6152448B2
公开(公告)日：1986-11-13
申请号：JP15419378
申请日：1978-12-15
申请人： FUJITSU LTD
发明人： ISHIKAWA TAKASHI , TERAI SEIJI , KURITA SHOICHI , OOYA TOSHIO , NODA HIDEKI
IPC分类号： G02B26/08 , G02B6/35

78. 发明专利

JPS61145503A PRISM FOR OPTICAL SPLITTING AND MIXING 失效
公开(公告)号：JPS61145503A
公开(公告)日：1986-07-03
申请号：JP26737184
申请日：1984-12-20
申请人： FUJITSU LTD
发明人： KUSAKA SATOSHI , NODA HIDEKI
IPC分类号： G02B5/30 , G02B27/10 , G02B27/28
摘要： PURPOSE:To maintain reflection characteristics of a total reflecting surface with inexpensive constitution by providing two prism parts with two opposite plane parts in one body. CONSTITUTION:A light transmission 3 consists of the plane parts 3a and 3b facing the prism parts 1 and 2 and a polarizing and splitting film 4 which has smaller area than the surface facing the prism part 2. The S polarized light of incident light 5 is reflected as projection light 7 and the P polarized light is transmitted through the film 4 as projection light 8; and the incident light 6 becomes projection light beams 8 and 7 similarly. The plane parts 3a and 3b are formed in one body, so even if an adhesive is forced out when the plane part 3a is adhered to the prism part 1e, there is no influence exerted upon the total reflecting surface 3c. Reflection characteristics of the reflecting surface 3c are therefore maintained and the cost is reduced.

79. 发明专利

JPS61145501A TOTAL REFLECTION METALLIC MIRROR 失效
公开(公告)号：JPS61145501A
公开(公告)日：1986-07-03
申请号：JP26736984
申请日：1984-12-20
申请人： FUJITSU LTD
发明人： KUSAKA SATOSHI , NODA HIDEKI
IPC分类号： G02B5/08 , B32B15/08 , G02B5/28
摘要： PURPOSE:To maintain stably high reflectivity for a long period of time by forming copper which acts as a total reflection film to >=2,000Angstrom film thickness on a transparent substrate via titanium of 5-50Angstrom film thickness. CONSTITUTION:The titanium film 2 and the copper film 1 thereon are formed on the glass substrate 3. Incident light 4 transmitted through the substrate 3 is totally reflected by the boundary face of the film 1 and is emitted as reflected light 5. The film thickness d2 of the film 2 is made 5-50Angstrom and the film thickness d1 of the film 1 is set at >=2,000Angstrom . The effect of increasing the adhesive strength of the film 1 is not obtd. if the film 2 is formed thinner than 5Angstrom and the reflectivity is decreased as a result of oxidation, etc. when the film 1 is made thinner than 2,000Angstrom . The reflectivity of the copper is thus effectively utilized and the adhesiveness to the substrate 3 is improved by the titanium film. Such total reflection film maintains stably the high reflectivity for a long period of time and has no dependency on wavelength and is therefore usable for various optical systems and is easily manufacturable as well.

80. 发明专利

JPS5960338A Optical fiber locator 失效
标题翻译：光纤定位器
公开(公告)号：JPS5960338A
公开(公告)日：1984-04-06
申请号：JP17198882
申请日：1982-09-30
申请人： Fujitsu Ltd , Tohoku Electric Power Co Inc
发明人： ISHIHATA YOSHINORI , SHIKAYAMA KAZUYOSHI , OOTSUKA FUJIO , HOTSUTA MIKIO , NODA HIDEKI , FURUTA YOUSUKE
IPC分类号： G01M11/00 , G02B6/00
CPC分类号： G01M11/3109
摘要： PURPOSE:To grasp a secular change by storing past measurement data on an optical fiber cable and comparing this stored data with new measurement data. CONSTITUTION:Light pulses of a laser diode 2 which synchronizes with a clock part 1 are sent out to an optical fiber 4 through a coupler 3. Then, Fresnel reflected light is passed through an avalanche photodiode 5, amplifier 6, A/D converter 7, and adder 8 to remove noises, etc., coded, and processed by a processing part 9 to be displayed on a display part 12. The part data is stored in a memory 10 and the same measurement of the optical fiber is taken repeatedly to obtain current data, which is compared with the past data; and a comparative arithmetic part performs arithmetics 11 regarding the loss of the optical fiber and splice loss and the result is displayed on the display part 12. The locator is provided with the comparative arithmetic functions to represent a secular change in receive waveform, i.e. variation in the characteristics of the optical fiber in clear form.
摘要翻译：目的：通过将过去的测量数据存储在光纤电缆上并将此存储的数据与新的测量数据进行比较来掌握长期变化。构成：与时钟部分1同步的激光二极管2的光脉冲通过耦合器3发送到光纤4.然后，菲涅尔反射光通过雪崩光电二极管5，放大器6，A / D转换器7 ，以及加法器8，去除由显示部分12显示的处理部分9编码和处理的噪声等。部件数据被存储在存储器10中，并且重复地对光纤进行相同的测量获取当前数据，与过去的数据进行比较; 并且比较运算部分对光纤损耗和接头损耗执行算术11，结果显示在显示部分12上。定位器具有比较运算功能，以表示接收波形的长期变化，即变化光纤的特点是清晰的形式。

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