Sumitomo Electric Industries, Limited

Sumitomo Wiring Systems, Limited

Autonetworks Technologies, Limited

Nippon Oil Company

Kiyoshi Kato

Hisao Go

Toshiaki Kihara

Akihiro Moto

Eiji Tsumura

Tomomi Sano

Yuji Nakura

Hiroshi Kato

Toshio Takagi

Mitsuaki Nishie

Hajime Arao

Masaru Sato

Junichi Kubo

Hiroshi Tateishi

Tadakazu Yamashita

Yuya Iwaguchi

Hiroyuki Kodama

Shuhei Ozu

The present disclosure is directed to achieve greater space efficiency. A wiring module (A) includes a first transmission line (), and a noise shielding member () that has a sheet shape and is arranged along the first transmission line (). The noise shielding member () has a thickness of 100 μm to 600 μm. Since the noise shielding member () has a sheet shape, and thus the space for arranging the noise shielding member () can be made smaller, it is possible to achieve greater space efficiency. Since the noise shielding member () has a thickness of 100 μm to 600 μm, it is possible to obtain a high noise shielding effect.

Wiring module

A method of manufacturing an optical module includes the steps of applying the invisible light onto the resin member and the optical device, observing, with use of a camera, a part of the resin member located at the optical fiber coupling plane and an image formed at the optical fiber coupling plane by the optical device active layer while applying the invisible light onto the resin member and the optical device, aligning positions of the resin member and the circuit board with respect to each other while observing the part of the resin member located at the optical fiber coupling plane and the image formed at the optical fiber coupling plane, and fixing the resin member to the circuit board while maintaining the aligned positions of the resin member and the circuit board.

Optical module and method of manufacturing optical module

An optical connector includes a housing, a photoelectric conversion circuit board on which a photoelectric conversion element is mounted, and a resin member made of a light transmissive synthetic resin and arranged on a plate surface of the photoelectric conversion circuit board so as to cover the photoelectric conversion element. The photoelectric conversion circuit board is housed in the housing. The resin member includes a sleeve to which a ferrule attached to an end of an optical fiber is fitted. The sleeve of the resin member is arranged such that an axial direction thereof is substantially perpendicular to the plate surface of the photoelectric circuit board. The resin member integrally includes a lens on an axial line of the sleeve such that the lens faces the photoelectric conversion element.

Optical connector having resin member including lens

A fiber optic cable fixturehas a joint member, a swaging member, and a fastening member. The joint memberhas a cylindrical shape in which a through holeis formed and includes a joint sectionjoined to another member, a male screw, and a cylindrical sectionthat is smaller in diameter than the male screwand that is covered with a jacketand tension fibers. The swaging memberis fitted to the cylindrical sectionwhile covered with the jacket. A female screwis formed at one end of an inner peripheral surface of the fastening member. A tapered surfaceis formed on another end of the inner peripheral surface of the fastening member

Fiber optic cable end fixture and fiber optic cable end fixing method

The present invention provides an optical transmitting module, in which a laser diode and a termination resistor are provided without sizing up the package thereof and degrading the thermal characteristic due to heat generation by the termination resistor. The transmitting module of the present invention includes the semiconductor laser diode, and the resistor. The laser diode is mounted on the side surface of the block extruding from the base. The resistor is mounted on the flat side portion of the end of the lead. The lead is secured in the through hole provided in the base with seal glass being filled in the gap between the through hole and the lead. In the transmitting module thus configured, the laser diode is thermally isolated from the heat generated by the resistor due to the seal glass.

Can-type optical transmitting module utilizing a laser diode with impedance matching resistors

The present invention relates to an optical transceiver that installs an optical transmitting assembly and an optical receiving assembly both are compact, inexpensive, and capable of operating at a high speed. The optical transmitting assembly of the present invention provides the metal bottom that installs the thermoelectric cooler thereon and the semiconductor optical device is mounted, via the insulating substrate, on the thermoelectric cooler. The first and second multi-layered ceramic substrates are provided to surround the thermoelectric cooler. The DC signal or the low-frequency signal for the thermoelectric cooler and the semiconductor optical device is supplied through the first ceramic substrate, while the high frequency signal for the semiconductor device, with the complementary signal having the opposite phase to the high frequency signal, is provided to the semiconductor device through the inner layer of the second ceramic substrate and the insulating substrate. The semiconductor light-receiving device, which monitors light emitted from the semiconductor light-emitting device, is mounted on the top layer of the second ceramic substrate. Thus, the transmission path for the high frequency signal from the drive circuit installed outside of the transmitting assembly to the light-emitting device becomes substantially linear.

Optical sub-assembly having a thermo-electric cooler and an optical transceiver using the optical sub-assembly

The present invention provides an optical transmitting module capable of outputting a signal for precisely controlling bias and modulation current, and a transmitting optical sub-assembly using the same. The optical transmitting module of the invention builds a semiconductor laser diodeand a temperature sensor within a CAN type package. The CAN type package includes a base, a block provided on the base and mounting the laser diode on a side thereof, and a plurality of leads secured to the base. The laser diode is supplied current signal Sthrough one of leads, while the temperature sensor outputs a signal Sthrough the other of leads. The temperature sensor is mounted immediately close to the laser diode, accordingly, capable of monitoring the temperature of the laser diode.

Optical transmitting module having a can type package and providing a temperature sensor therein

The present invention provides an optical transmitting module or optical transmitting sub-assembly in which an inductor for de-coupling the bias circuit of the semiconductor laser diode is built. The laser diode is mounted on the side surface of the block provided on the stem, while the inductor is installed on the lead, which is secured by the stem, such that one electrode of the inductor is in contact to the lead and the other electrode of the inductor is connected to an electrode of the laser diode. The electrode of the laser diode is also connected to the other lead. Thus, the electrode of the laser diode is connected to two leads, one of which is through the inductor.

Optical transmitting module having a de-coupling inductor therein

The present invention relates to a method for manufacturing an optical transceiver that installs an optical transmitting assembly and an optical receiving assembly both are compact, inexpensive, and capable of operating at a high speed. The optical transmitting assembly of the present invention provides the metal bottom that installs the thermoelectric cooler thereon and the semiconductor optical device is mounted, via the insulating substrates, on the thermoelectric cooler. The first and second multi-layered ceramic substrates are provided to surround the thermoelectric cooler. The DC signal or the low-frequency signal for the thermoelectric cooler and the semiconductor optical device is supplied through the first ceramic substrate, while the high frequency signal for the semiconductor device, with the complementary signal having the opposite phase to the high frequency signal, is provided to the semiconductor device through the inner layer of the second ceramic substrate and the insulating substrate. The semiconductor light-receiving device, which monitors light emitted from the semiconductor light-emitting device, is mounted on the top layer of the second ceramic substrate. Thus, the transmission path for the high frequency signal from the drive circuit installed outside of the transmitting assembly to the light-emitting device becomes substantially linear.

Method for manufacturing a transmitting optical sub-assembly with a thermo-electric cooler therein

An optical moduleincludes an optical component, a bodyincorporating an optical element, and a metallic sleevehaving a tubular shape. The optical componentincludes a nonmetallic ferrulehaving an optical fiber insertion hole, and a metallic holderwhich covers part of the ferrule. In this optical module, part of the holderis inserted into the sleeve, and is positioned and welded to the sleeve. The sleeveis positioned to a tubular portionof the bodyand welded thereto.

Optical module

A light-transmitting module of the present invention includes a light-emitting device such as a laser diode (LD), a transistor for shunting-drive the LD and a CAN type package with a base and an electrically conductive block. The LD and the transistor are mounted on a side of the block in side-by-side arrangement such that the LD substantially positions a center of the package. One of the current terminals of the transistor and one electrode of the LD are connected via the conductive block. The other of the current terminal of the transistor and the other of the electrodes of the LD are connected to one lead, while the control terminal of the transistor is connected to the other lead. Since the present module includes the transistor within the CAN type package, the size thereof may be miniaturized, and the quality of the optical output can be enhanced.

Light-transmitting module containing an driving device in a package

A method for hydrocracking a heavy fraction oil which comprises cracking a heavy fraction oil in the coexistence of a catalyst and a hydrogen donating solvent such as tetralin while adding a hydrogen-containing gas to the cracking reactor thereby inhibiting the formation of carbonaceous substances and precursors thereof and then hydrogenating the reaction products in the presence of a solid catalyst while adding a hydrogen-containing gas to the hydrogenating reactor thereby to convert the toluene-insoluble carbonaceous substances and precursors thereof to toluene-soluble ones, thus causing no clogging in an apparatus used.

Growing community of inventors

Yokohama, Japan

Kiyoshi Kato