专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2002152142A SIGNAL CONVERTING CIRCUIT AND OPTICAL ACTIVE CONNECTOR 失效
公开(公告)号：JP2002152142A
公开(公告)日：2002-05-24
申请号：JP2000338677
申请日：2000-11-07
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TANAKA NOBUYUKI , IWASAKI NOBORU , YANAGIBASHI MITSUAKI
IPC分类号： G06F3/00 , H01L31/12 , H04B10/11 , H04B10/516 , H04B10/61 , H04B10/152 , H04B10/04 , H04B10/06 , H04B10/10 , H04B10/105 , H04B10/142 , H04B10/22
摘要： PROBLEM TO BE SOLVED: To transit to optical signal transmitting between devices without replacing/altering an existing device by providing a signal converting circuit and an optical active connector capable of converting an arbitrary analog signal containing a multi-level signal form to an optical signal and transmitting the optical signal. SOLUTION: A frequency modulating circuit 22 is provided for changing a frequency corresponding to an input signal level, and the output of the frequency modulating circuit 22 is inputted to a light emitting element driving circuit 23, and the strength of the optical signal is modulated. Thus, the optical signal whose frequency changes corresponding to the input electric signal level is obtained.

2. 发明专利

JP2000183099A RIBBON FOR BONDING 失效
公开(公告)号：JP2000183099A
公开(公告)日：2000-06-30
申请号：JP35683398
申请日：1998-12-16
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HOSOYA MASAKAZE , ISHIZUKA FUMINORI , YANAGIBASHI MITSUAKI
IPC分类号： H01L21/60 , H01L23/66
摘要： PROBLEM TO BE SOLVED: To provide a ribbon for bonding which can secure pass frequency band of 20 GHz or higher, and additionally in which a conventional ribbon bonder can be mounted and used without changing the structure of itself by a large margin. SOLUTION: A ribbon 1 for bonding is constituted, by arranging first ground wire patterns 4 in parallel at an interval of a gap G1 on both sides of a signal line pattern 3, and sticking an insulating resin tape 2 fast onto it, thus it is in such form that it can be wound on a spool 7 and supplied to a bonder. The structure of this ribbon 1 for bonding is the so-called 'coplanar line structure' of a high-frequency line, and when relative dielectric constant of an insulating resin tape 2 is 4.5, then the thickness is set to 12 μm, so that the thickness of the signal line pattern 3 and the first ground line pattern 4 is set to 10 μm, and that a width W of the signal line pattern 3 is 100 μm, putting the gap at 14 μm will make the property impedance of the line 50 Ω.

3. 发明专利

JPH0476456B2 失效
公开(公告)号：JPH0476456B2
公开(公告)日：1992-12-03
申请号：JP20149188
申请日：1988-08-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KONO KENJI , KITO TSUTOMU , NOZAWA TOSHINORI , YANAGIBASHI MITSUAKI
IPC分类号： G02B6/12 , G02F1/03 , G02F1/035

4. 发明专利

JP2000121869A OPTICAL FIBER COUPLING METHOD 失效
公开(公告)号：JP2000121869A
公开(公告)日：2000-04-28
申请号：JP28941498
申请日：1998-10-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HOSOYA MASAKAZE , ISHIZUKA FUMINORI , YANAGIBASHI MITSUAKI
IPC分类号： G02B6/40 , G02B6/30
摘要： PROBLEM TO BE SOLVED: To decrease the number of aligned axes and to shorten the alignment time by fixing a spherical-tip optical fiber to a fiber block, which is made to abut against a chip mount block mounted with an optical component, where the interval to the optical component is nearly equal to the distance from the tip of the spherical-tip optical fiber to a beam waist, and then performing aligning. SOLUTION: For example, one end surface as the projection surface of a semiconductor optical element 1 has an angle deviation θ from the reference surface 11 of the chip mount block 2. In this case, one end surface of the fiber block is made to abut against the reference surface 11 of the chip mount block 2 and the center line of each V groove of the fiber block is adjusted almost to the center line of each waveguide 10 of the semiconductor optical element 1. On the V grooves of the fiber block, spherical-tip optical fibers are arrayed and moved and adjusted so that the interval to the semiconductor optical element 1 is nearly equal to the distance from the spherical-tip optical fiber tip to the beam waist.

5. 发明专利

JPH06222406A SEMICONDUCTOR OPTICAL DEVICE 失效
公开(公告)号：JPH06222406A
公开(公告)日：1994-08-12
申请号：JP1081293
申请日：1993-01-26
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KONO KENJI , KAMITOKU MASAKI , YOSHIMOTO NAOTO , SEKINE SATOSHI , HASUMI YUJI , TAKEUCHI HIROAKI , YANAGIBASHI MITSUAKI
IPC分类号： G02B6/12 , G02B6/13 , G02F1/313 , G02F1/35 , H01S3/10
摘要： PURPOSE:To improve the characteristics as a diode, extinction ratio characteristic and light switching characteristic by providing doping layers having a high doping concn. and small thickness only at the boundary between non-doped layers and the doping layers. CONSTITUTION:The p-InP layers 14 having a high doping concn. and small thickness are provided between the p-InP clad layers 3 and the i-InP clad layers 4 which are the non-doped layers and the n-InP layers 16 having a high doping concn. and small thickness are provided on the n side. These layers are respectively provided in order to control the diffusion fronts of the p type and n type dopants. Since the thicknesses of these layers are required to be as small as from several nm to about several 10nm, the propagation loss of light is not adversely affected. Further the diffusion fronts of the dopants are uniformly controlled and formed by the presence of such layers and, therefore, the doping amt. of the p-InP clad layers 3 and the n-InP clad layers is made smaller than heretofore. As a result, the propagation loss is eventually made lower than the propagation loss of the conventional structures.

6. 发明专利

JPH04238326A OPTICAL CONTROL CIRCUIT 失效
公开(公告)号：JPH04238326A
公开(公告)日：1992-08-26
申请号：JP2039691
申请日：1991-01-22
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MIYAZAWA HIROSHI , NOGUCHI KAZUTO , MITOMI OSAMU , YANAGIBASHI MITSUAKI
IPC分类号： G02F1/05 , G02F1/313
摘要： PURPOSE:To produce the optical control-circuit having directional coupler type optical waveguides at a practicably good yield. CONSTITUTION:A coupling degree adjusting region 20 which adjusts the degree of coupling of light waves is provided near the directional coupler type optical waveguides 12A, 12B of the optical control circuit having at least one optical control element constituted of at least two pieces of the directional coupler type optical waveguides 12A, 12B formed on the surface of a substrate 11 or near the surface of the substrate 11.

7. 发明专利

JPH03127023A WAVEGUIDE TYPE OPTICAL ELEMENT 失效
公开(公告)号：JPH03127023A
公开(公告)日：1991-05-30
申请号：JP26522789
申请日：1989-10-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NOZAWA TOSHINORI , NOGUCHI KAZUTO , MIYAZAWA HIROSHI , YANAGIBASHI MITSUAKI
IPC分类号： G02F1/035
摘要： PURPOSE:To easily obtain excellent characteristics over a long period of time by forming a buffer layer of an insulator in which metallic particles are included. CONSTITUTION:The insulator in which the metals are included is used as the buffer layer 13 on a substrate 11. Namely, the capturing centers of a deep energy level are decreased and the nonohmic electrical conductivity is generated by using the insulator in which the metals are included as the buffer layer 13 and, therefore, the charge carriers are implanted to the substrate surface and the neutralization of the charges is easily executed. The fluctuation in the potential of the substrate 11 surface is suppressed in this way and the fluctuation in characteristics at the time of the impression of a DC electric field and a change in environmental temp. is suppressed and the fluctuation in element characteristics is prevented.

8. 发明专利

JPH02306209A METHOD FOR CONNECTING OPTICAL WAVEGUIDE SUBSTRATE AND OPTICAL FIBER 失效
公开(公告)号：JPH02306209A
公开(公告)日：1990-12-19
申请号：JP12836989
申请日：1989-05-22
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YOSHIZAWA TETSUO , TAKEMOTO KENJI , SASAKI ATSUSHI , YANAGIBASHI MITSUAKI , TAKATO NORIO , MURATA NORIO
IPC分类号： G02B6/30
摘要： PURPOSE:To connect and fix the end surfaces of two optical waveguides on a substrate and the end surfaces of two optical fibers in an optimum position by moving an aligning plate to be bonded and fixed on a side surface in the vicinity of the end surface of an optical fiber the on a supporting plate whose one part is fixed to the rear of substrate and executing the alignment. CONSTITUTION:At one end of an aligning plate 4 made of a material in which the coefficient of thermal expansion is very small, an optical fiber 3 is bonded and fixed, thereafter, the other end is held by an inching device, an optical connection loss is monitored on a supporting plate 5 to be bonded and fixed on a substrate 1 beforehand, and simultaneously, the end surface of an optical waveguide 2 and the end surface of the optical fiber 3 are aligned. At such a time, the positioning is executed in a condition in which a transparent acrylic adhesive forms a bridge between the end surface of the optical fiber 3 and the end surface of the optical waveguide 2. After the optimum position is decided, the adhesive between the end surface of the optical waveguide 2 and the end surface of the optical fiber 3 is hardened by a UV light, and next, a space between the aligning plate 4 and supporting plate 5 is fixed with the adhesive. In the same way, an optical fiber 3' is positioned to an optical waveguide 2' through an aligning plate 4' and the supporting plate 5 and fixed.

9. 发明专利

JPH02289821A OPTICAL CONTROL ELEMENT 失效
公开(公告)号：JPH02289821A
公开(公告)日：1990-11-29
申请号：JP2944190
申请日：1990-02-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NOZAWA TOSHINORI , KONO KENJI , JUMONJI HIROMICHI , SUZUKI TOSHIO , MITOMI OSAMU , YANAGIBASHI MITSUAKI , KITO TSUTOMU
IPC分类号： G02B6/10 , G02F1/035 , G02F1/225
摘要： PURPOSE:To obtain the optical modulator which has high efficiency over a wide frequency range and is easily produced by specifying the thickness of a buffer layer and the thickness of an overlay layer. CONSTITUTION:This control element is provided with a substrate 1 having an electrooptical effect having optical waveguides 2, the buffer layer 3 disposed on the substrate 1, traveling-wave electrodes 4,5 disposed on the buffer layer 3, and a shielding conductor 9 disposed via the overlay layer 8 near the region where the optical waveguides 2 and the traveling-wave electrodes act with each other. The thickness of the buffer layer 3 and the thickness of the overlay layer 8 are so determined that the effective refractive index of the microwaves of the substrate 1 for the microwave signal for modulation to be impressed to the traveling-wave electrode 4 is approximated to the effective refractive index of the light propagating in the optical waveguides 2 and the characteristic impedance of the traveling-wave electrodes 4, 5 and the characteristic impedance of an external microwave circuit are approximated to each other. The light control over the wide frequency range is possible in this way and since the thickness of the overlay layer is accurately formed, the optical control element having the high reproducibility of the production and reliability is easily produced.

10. 发明专利

JPH0273207A PACKAGING STRUCTURE OF OPTICAL WAVEGUIDE PARTS 失效
公开(公告)号：JPH0273207A
公开(公告)日：1990-03-13
申请号：JP22478888
申请日：1988-09-09
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： JUMONJI HIROMICHI , YANAGIBASHI MITSUAKI , MIYAZAWA HIROSHI , NOGUCHI KAZUTO , NOZAWA TOSHINORI , SUZUKI TOSHIO
IPC分类号： G02B6/122 , G02B6/30
摘要： PURPOSE:To prevent peeling and rupture of a joint part in the course of use by providing a stress relaxation part formed by buckling an optical fiber between the joint part and a fixed part. CONSTITUTION:An end part in which a sheath 5a of a coated optical fiber 5 is eliminated is inserted through a through-hole 10a of a pipe 10, and subsequently, a light incident/emitting end face of an optical fiber 5b is joined to an end face 3a of an optical waveguide 3 and fixed, and thereafter, a stress relaxation part 11 formed to a buckling shape by applying a buckling load in the axial direction is provided in advance, and by fixing the end part of the sheath 5a and the rear end part of the pipe 10 with an adhesive agent, a fixed part 12 is constituted. A thermal expansion coefficient of an optical substrate 2 is remarkably different by about one digit from a thermal expansion coefficient of a packaging case 1, therefore, on the side where a temperature at the time of using is higher than a temperature at the time of packaging, a compressive load works on the optical fiber 5b, and on the side of a lower temperature, a tensile load works. It is relaxed by the stress relaxation part 11 that such a tensile or compressive load works on a joint part 6, and it is prevented that the joint part 6 peels off or ruptured.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式