The Furukawa Electric Co., Ltd.

Yozo Ishikawa

Hideyuki Nasu

Kazuya Nagashima

Atsushi Izawa

Toshinori Uemura

Yoshinobu Nekado

Naoya Nishimura

Masayuki Iwase

Jun Miyokawa

Maiko Ariga

Kazuki Yamaoka

Taketsugu Sawamura

An optical device includes: a case; a sleeve attached to the case, the sleeve including a first through-hole penetrating between an inside and an outside of the case, and an inclined surface inclined with respect to a penetrating direction of the first through-hole, the inclined surface having an opening of the first through-hole; a first optical fiber including a core wire including a core and a clad, and a sheath configured to surround the core wire, wherein an exposed portion of the core wire not surrounded by the sheath passes through the first through-hole; and a first joining material interposed and sealed between an outer peripheral surface of the exposed portion and an inner peripheral surface of the first through-hole in the first through-hole.

Optical device and method for manufacturing optical device

An optical module includes: an optical device; an array lens member that integrally includes a plurality of parallel lens units optically connected to the optical device; and a correction optical element configured to correct light that passes through the lens units.

Optical module and optical device

An optical module includes: a laser device; a wavelength detector; a modulator; a modulator driver; a coherent mixer; a photoelectric element; a transimpedance amplifier; and a casing. Further, the laser device is arranged such that the laser device outputs a laser light beam in a direction opposite to a side on which the optical output unit is arranged in the casing.

Optical module

An optical module includes: photoelectric elements including first terminal groups; an integrated circuit including second terminal groups and ground terminals; a carrier substrate; a housing; and a common ground pad. Further, the carrier substrate is fixed to one surface of the housing, the carrier substrate includes signal wiring parts and a ground wiring part, the ground wiring part includes terminal pattern parts, a common pattern part, and a coupling part, each of the terminal pattern parts being disposed between the corresponding signal wiring parts and electrically connected with one of the ground terminals, the common pattern part being disposed on a side where the common ground pad is provided on the carrier substrate, the coupling part electrically connecting each terminal pattern part and the common pattern part, and the ground terminals of the integrated circuit are electrically connected with the common ground pad through the ground wiring part.

An optical module includes a housing including an internal space that has an opening in a substrate mounting surface, an element mounting surface that forms a portion of an inner surface of the internal space, and a waveguide introduction opening that is formed in a side surface intersecting the substrate mounting surface and is opened to the opening of the substrate mounting surface and communicated with the internal space, an optical element that is mounted on the element mounting surface, and an electronic element that is mounted on the element mounting surface and is connected to the optical element. When the substrate mounting surface is mounted on a circuit substrate, an optical waveguide that protrudes from a surface of the circuit substrate is introduced into the internal space through the waveguide introduction opening.

Optical module, optical module mounting method, optical module-mounted circuit substrate, optical module evaluation kit system, circuit substrate, and communication system

The present invention provides an optical module capable of achieving downsizing and high densification, and reducing crosstalk as compared to a conventional optical module. An optical module includes: an optical device including multiple light receiving elements; a control device which transmits and receives signals to and from the optical device; and a substrate including multiple lines which allow passage of the signals. Anode terminals of the multiple light receiving elements are connected to different lines by first wires, respectively. Cathode terminals of the multiple light receiving elements are connected to different lines by second wires, respectively. Each first wire and the corresponding second wire cross each other and are disposed out of contact with each other. The wires connecting each light receiving element and the control device, namely, the wires of each channel cross each other.

Optical module for reducing crosstalk

A prism/lens array () in the present invention is a grass prism having an approximately 45 degrees tapered part. A plurality of lenses () are provided side by side on the front surface of the prism/lens array (). A pair of protrusions () are formed on both sides of lenses () on the surface on which the lenses () are provided. The protrusions () are formed in the top-bottom direction of the prism/lens array () and roughly V-shaped cross sections. Grooves () are provided in an inside surface of a prism-securing part (), in areas corresponding to the protrusions (). The grooves () are shaped such that the protrusions () can fit into the grooves; for example, the grooves could have roughly V-shaped cross sections.

An optical module which includes a housing having a placing portion and an optical input-output portion facing an optical input-output surface of a ferrule; a first fixing portion for fixing the ferrule to the housing in the direction of the Z-axis perpendicular to the placing portion; and a second fixing portion for fixing the ferrule to the housing in the direction of the Y-axis perpendicular to the optical input-output surface, wherein the second fixing portion can change states from the first state to the second state; the first fixing portion fixes the ferrule in the direction of the Z-axis, and does not fix the ferrule in the Z-axis direction when the first fixing portion is at a second position; and the first fixing portion moves from the second position to the first position when the second fixing portion changes its state to a specific state.

An optical moduleaccording to the invention is comprised of: a substrate; a laser diode arrayimplemented on said substrate in an array; a driver ICimplemented on said substrate and electrically connected to each of surface emitting semiconductor laser elements of the laser diode array; an optical connector unitfor holding a plurality of optical fiberin an array, wherein the optical connector unitis fixed to the substratein a location where center of each single end of said plurality of optical fiber and center of each light injecting region are aligned with each other; and a cover. The optical connector unitincludes two guide-pin holeson two opposite sides of a plurality of fiber holding hole. Two alignment marksare provided on a surfaceof the substrate, which are visually recognizable through each of the guide-pin holes, and function as alignment reference of said optical connector unit

Optical module and method of manufacturing thereof

An optical component provided with a waveguide groove having, an waveguide holding plane having a surface shape extending along a specified axial direction and capable of holding at least one optical waveguide while positioning it at at least a part of at least one side face thereof; and an opening extending substantially oppositely to the waveguide holding plane and being smaller in width than the outside diameter of at least one optical waveguide in a specified widthwise direction perpendicular to the specified axial direction.

Growing community of inventors

Tokyo, Japan

Yozo Ishikawa