Mitsubishi Cable Industries, Ltd.

Mitsubishi Jukogyo Kabushiki Kaisha

Takeshi Satake

Motohiko Yamasaki

Takeji Akutsu

Tadahiko Nakai

Kenji Sato

Koji Kimura

Masayoshi Hachiwaka

Takaharu Kinoshita

Tokuji Hayashi

Hirokazu Taniguchi

Atsushi Utsumi

Koichi Maeda

Isao Shirasu

Haruo Ooizumi

Masahiro Miura

Moriyuki Fujita

Koichi Suzuki

Yoshiki Yamakawa

Toshikazu Gozen

Hiroyuki Tanaka

Yoshimasa Tsukamoto

Mamoru Nakamura

Shigeru Sasaki

Toshiya Suzuki

Masahiro Hoshino

Takafumi Hyodo

Masakatsu Kimura

Manabu Murayama

Yoshiyuki Imada

'Optical fiber cable'

An optical fiber includes a core () having an oblong rectangular or square cross section and made of quartz, a cladding () surrounding the core (), having a circular outer cross-sectional shape, having a lower refractive index than the core (), and made of resin, and a support layer () surrounding the cladding () and made of quartz.

Optical fiber

An optical fiber structure () includes an optical fiber (), and a block-like chip () joined to the optical fiber (). The block-like chip () is tapered toward its fiber-joined end.

Optical fiber structure, system for fabricating the same, and block-like chip for use therein

An optical connector structure (C) includes: an optical fiber () having a laser beam entrance end to which a quartz chip () is integrally connected; a ferrule () into which a portion of the optical fiber () including the quartz chip () is inserted and which holds the portion of the optical fiber; and a receptacle () surrounding the ferrule (), and including a large-diameter hole () formed toward an opening and a small-diameter hole formed toward a back of the receptacle so as to be connected to the large-diameter hole. A front end portion () of the ferrule () is inserted into the small-diameter hole () of the receptacle (), and a back body portion () of the ferrule () is inserted into the large-diameter hole () of the receptacle ().

Optical connector structure

A fixing structure of an exterior member to an optical fiber cable includes an optical fiber cable having a coating layer formed on an outer circumference of a bare optical fiber, and the exterior member has a through-hole through which the optical fiber cable can be inserted. The exterior member of the optical fiber cable has a light shielding member to cover an outer circumference of the optical fiber cable, the light shielding member is fixed at a part where the exterior member is externally mounted, and an inner surface of the through-hole of the exterior member is bonded to the light shielding member.

Fixing structure of exterior member to optical fiber cable

An optical fiber includes a core () having an oblong rectangular or square cross section and made of quartz, and a cladding () surrounding the core (), having a circular outer cross-sectional shape, and made of resin.

Optical fiber and method for fabricating the same

A laser guide optical fiber () used for transmitting a laser beam includes an optical fiber body () including a core () and a clad (), and a quartz chip () integrally provided at an end surface on the light entering side of the optical fiber body () and including an optical waveguide portion, where at least the optical waveguide portion of the quartz chip () is made of pure quartz. The quartz chip () includes a light entering surface subjected to surface fusion treatment.

Laser guide optical fiber and laser guide including the same

An optical fiber/glass tube fusion spliced structure includes an optical fiber made of glass and a glass tube through which the optical fiber is inserted and at least in part of the optical fiber/glass tube fusion spliced structure, an outer circumference portion of the optical fiber and an inner circumference portion of the glass tube are fusion spliced. Part of the fusion spliced portion located in one of the optical fiber and the glass tube is formed of a material having a lower fusion point than a fusion point of part of the fusion spliced portion located in the other.

Optical fiber/glass tube fusion-spliced structure, optical fiber assembly including the structure, and glass tube used in the structure

An optical connector includes slide pins and , held for movement in a direction of an axis of the optical connector , and a proximity switch whose conducting state can be switched in response to the movement of the slide pins. Only when the optical connector is properly connected to an optical receptacle , the proximity switch is turned into the conducting state.

Connector with a connection detection function, optical fiber cable with a connection detection function, and equipment control mechanism for an optical equipment

A high power fiber optic connector detachably attached to a connected cylindrical portion having an axial hole portion, a male screw portion, and a key way. This fiber optic connector is provided with a ferrule portion to be inserted into said axial hole portion, a cap nut to be engaged with said male screw portion, and a positioning key portion to be inserted into said key way. This key portion is fixed to be freely changed in a circumferential direction of said ferrule portion.

High power fiber optic connector

A receptacle has an end surface supported along a plane extending at right angles to the axis of the receptacle and a contact surface at the other end. The contact surface also extends at right angles to the axis of the receptacle. A receptacle holder has a recess within which the receptacle is received. An adjusting mechanism is devised to adjust radial position of the receptacle. A lens holder is attached to the other end of the receptacle holder. A slide member has a sliding surface in surface contact with the contact surface of the receptacle. The slide plate is urged toward the one end of the receptacle so as to bring the sliding surface into contact with the contact surface of the receptacle. An optical fiber is inserted into the receptacle through a ferrule. If the optical fiber is twisted, the slide plate permits ready rotation of the receptacle in a torsional direction so as to prevent the optical fiber from being subjected to torsional stress. Also, opposite ends of the receptacle are gripped in surface contact and supported in a plane extending at right angles to the axis of the receptacle holder. This arrangement prevents inclination of the receptacle and thus, optical misalignment of the optical fiber and the lens if the weight of the optical fiber is applied.

Collimator with adjusting mechanism for improved alignment between

The present invention provides an optical energy beam transmission path structure comprising at least one pair of optical fibers each having a connection end, and at least one fiber connector for connecting the connection ends of the paired fibers substantially coaxially. A small axial air gap is formed between the connection ends of the paired fibers, and an annular clearance is formed immediately around the connection end of the glass body of each fiber.

Optical energy beam transmission path structure

The present invention relates to an energy transmission optical fiber which is a medium for transmitting high-energy beams within an ultraviolet range such as laser beams. Since an optical fiber according to the present invention comprises a core formed of pure silica and a clad having a graded index type distribution of refractive index and said clad is disposed on an interface between the core and the clad where many structural defects are generated, the transmission loss is not increased even after the transmission of high-energy beams for a long time. In addition, since the optical fiber according to the present invention comprises the core formed of pure silica having a high melting point, the high-energy beams can be transmitted without generating a melting fracture in the core.

Energy transmission optical fiber

A wear sensor provided with a block incorporating one or more optical fibers for indicating that wear has occurred to the block, on the basis of a fact that the fibers have been severed on account of wear of the block.

Growing community of inventors

Hyogo, Japan

Takeshi Satake