Hirose Electric Company, Ltd.

Tsutomu Matsuo

Tsuyoshi Sakata

Tatsuya Arai

Masakazu Nagata

Tadashi Ohshida

Jeremy Buan

Yoku Yamagami

Hirokatsu Yaegashi

Takashi Nagawatari

Kihong Kim

Toshiyuki Takada

Nobuhiro Tamai

Shuji Suzuki

Ching-Chao Huang

Shoichi Tomioka

Clement Kam Lam Luk

Hiromichi Muraoka

Example implementations described herein are directed to an interface configured to redirect light between a connector connected to a printed optical board (POB) via an optical waveguide, and a photonic integrated circuit (PIC), the interface involving two-dimensionally distributed waveplates (TDWs) having multiple layers of p-doped and n-doped silicon, the TDWs configured to be driven to change a dielectric constant at a two dimensional location on the TDWs such that the received light is redirected at the two dimensional location.

Systems and methods for alignment of photonic integrated circuits and printed optical boards

Example implementations described herein are directed to a system involving one or more photonic integrated circuits having multi-mode waveguides and connected to a printed optical board through the use of multi-mode waveguide connectors described herein. The printed optical board can include an embedded multi-mode waveguide bus to facilitate optical signal to and from the photonic integrated circuits. The system can also include a chiplet such as a photonic integrated circuit with a single mode waveguide configured to connect to an optical fiber cable.

Multi-mode waveguide system and connector for photonic integrated circuit

The present invention involves connectors for reducing Far-End Crosstalk (FEXT) through the use of novel polarity swapping to negate the cumulative effect of FEXT. Skew adjustment is used to improve the FEXT cancellation from polarity swapping. The polarity reversal location or locations among FEXT sources are optimized to achieve maximum FEXT cancellation. The novelty polarity swapping technique can be applied to a wide variety of connectors, such as mezzanine connectors, backplane connectors, and any other connectors that can benefit from FEXT reduction.

Reducing far-end crosstalk in electrical connectors

A board electrical connector includes a plurality of the terminals provided in a housing. The terminals are attached to a circuit board on one side of the housing and fit each other with a middle connector on the other side of the housing. The terminals contact with pad portions of middle members of the middle connector. A receiving groove having an opening portion to receive an edge portion of the middle member of the middle connector is provided in the housing. A contact portion of the terminal enters the receiving groove for contacting with the middle member with a contact pressure. A protrusion having a smaller entry amount than that of the contact portion is provided on an inner wall surface of the receiving groove in a receiving direction of the receiving groove. The protrusion is situated at the same position as that of the contact portion.

Board electrical connector, and electrical connector assembly having board electrical connector and middle electrical connector

An electrical connector () has ground planes (). Each ground plane () crosses counter ground planes () of the counter connector () so as to make a lattice structure when the counter connector () is fitted to the connector (). The contact section (C) of a signal terminal () of the connector () has a plane surface perpendicular to the surface of the corresponding counter contact section (A) of the counter signal terminal (), and formed at a flexible elastic arm (B) in the plane surface. The ground plane () has pressure-welding sections (B) and (B), which individually elastically contact with the facing inner surfaces of each slit, at a portion to be put into each slit of the counter ground plane ().

Electrical connector having ground planes

In a transmission circuit board, ground terminal portions () are disposed at every other two rows in both end columns. Each of signal circuit layers () includes at least a pair of adjacent signal connecting portions electrically connected to a pair of the wiring portions () arranged in parallel in a row direction and the column direction different from those on an adjacent signal circuit layer. Each of the ground layers is electrically connected to at least one of the ground terminal portions () in the both end columns.

Transmission circuit board

A transmission board () comprises a frame body () and a surface board () supported by the frame body () and having a transmission circuit. The frame body () has plugging edges () that project from the edges of the surface board () for guiding the terminals of mating connectors to connection pads on the surface board (). The plugging edges have guiding slopesA andB, andA andB. At least the plugging edges of the frame body () are made of a metal or resin molding.

Connector assembly of connector and transmission board

Transmission board and connector assembly made by a combination of a connector and the transmission board

An electrical connector () for a circuit board (P) includes a fixing member () having a first housing () with a mount face facing to the circuit board and at least one fixing piece () for fixing the first housing to the circuit board, and a connection member () having a second housing () with a mount face facing to the circuit board and a plurality of terminals () connected with circuit traces of the circuit board. The connection member is supported by the fixing member by a bottle neck such that the second housing is spaced from the first housing.

Electrical connector for circuit board and electrical connector assembly having the same and transmission board

An electronic component assembly mounted on a circuit board () comprises an intermediate connector () mounted on the circuit board and having a first space () for accommodating first electronic components (A,B, andC) provided on the circuit board and a unit body () provided on the intermediate connector and connected to the circuit board through the intermediate connector. The unit body comprises a connector member () having a second space () and a mounting member () having second electronic component (A,B, andC) accommodated in the second space.

Electronic component assembly, and intermediate connector and unit body for the same

An intermediate board electrical connector comprises a circuit board having two non-parallel straight edges, a plurality of connections sections ( and ) arranged along the straight edges at regular intervals, and a plurality of wiring conductors ( ) connecting the corresponding connection sections ( and ). The connection sections ( and ) are connected to connectors ( and ), respectively.

Intermediate board electrical connector

A flexible circuit board connecting device comprises a flat connector ( ) to be connected to a predetermined circuit member, a flexible circuit board ( ) to be connected to the circuit member via the connector ( ). The connector ( ) comprises a flat housing having a plurality of holding holes ( ), a plurality of terminals ( ) held in the holding holes ( ). Each terminal ( ) has a connection section ( A) to be connected to the circuit board and a contact section ( D) to be connected to the flexible circuit board. The contact points between the flexible circuit board and the terminals are made movable along the flexible circuit board from the zero insertion position to the contact position under spring forces.

Flexible circuit board connecting device

A method of making an electrical connector having a housing ( ) and a plurality of contact elements with connection sections ( ) projecting from the housing, which comprises filling a regular recess ( ) provided in the upper face ( ) of a mold member ( ) with a solder material ( A), putting the front ends of the connection sections into the solder material, solidifying the solder material, and removing the connection sections from the mold member.

Method of making an electrical connector

A contact element (,) comprises a base section (,) for attaching the contact element to a housing (,); a connection section (,) extending from the base section at a position; a first contact piece (,) extending from the base section at a first position to form a first contact portion (,A) at a free end; and a second contact piece (,) extending from the base section at a second position to form a second contact portion (,A) at a free end and successively bend in three dimensions.

Electrical connector having a contact element with large flexibility and a short transmission path

An intermediate electrical connector comprises a housing (,) having apertures (,A,,A) and a contact element (,) which comprises a retention section (,) held between the peripheries of the apertures (,A,,A), a pair of contact sections (,A,,B) projecting from the apertures (,A,,A) in opposite directions, and a transmission path (,) provided between the contact sections (,A,,B).

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Tokyo, Japan

Tsutomu Matsuo