Hirose Electric Company, Ltd.

Tadashi Ohshida

Jeremy Buan

Ching-Chao Huang

Tsutomu Matsuo

Nobuhiro Tamai

Kihong Kim

Jingqian Tian

Toshiyuki Takada

Shuji Suzuki

Shota Yamada

Clement Kam Lam Luk

Clement Luk

Hiromichi Muraoka

Example implementations described herein are directed to reducing far end cross talk (FEXT), including differential-to-differential far end crosstalk (DDFEXT) or single ended FEXT through generating and applying a delay shifter/inverter that is cascaded onto a target electrical system and shifts the even-mode and odd-mode propagation delay of a target electrical system to be substantially equal, which in turn reduces FEXT in the overall system.

Systems and methods to reduce differential-to-differential far end crosstalk

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

A method of manufacturing an electrical system for reducing differential-to-differential far end crosstalk (DDFEXT) includes converting a first S parameter representative of a design of a first electrical system into a differential-only S parameter, generating a second differential-only S parameter configured to add even-mode propagation delay and odd-mode propagation delay of the differential-only S parameter of the electrical system such that a total even-mode propagation delay and odd-mode propagation delay of the differential-only S parameter are substantially equivalent, and reconfiguring a second electrical system from the differential-only S parameter and the second differential-only S parameter.

The first terminals have contact arm portions extending in a rectilinear manner in the direction of connector plugging and unplugging; the second terminals have convex contact point portions contactable with an intermediate portion of the contact arm portions in the same direction. When the stub portions of the contact arm portions are divided into a free end side range and a proximal end side range such that the center point of said stub portions in the direction of plugging and unplugging forms a boundary, in the arranged state of the first terminals, impedance at arbitrary locations in the direction of plugging and unplugging within the free end side range is larger than impedance at arbitrary locations in the plugging direction within the proximal end side range.

Electrical connector assembly and electrical connector for use in same

Example implementations described herein are directed to a method and apparatus for improving insertion loss of connector stub and thereby increasing a system's signal bandwidth. This technique shapes the connector stub in a specific way to shift its resonant frequency higher while having equal or better electrical performance below the original resonant frequency.

Mitigation of connector stub resonance

An electrical connector for connecting a circuit board includes a plurality of blades; a plurality of terminals disposed on each of the blades and extending in parallel to each other; and a holding member for holding the blades next to each other to be situated on a same plane. Further, each of the blades includes a base member, and the terminals are integrated with the base member.

Electrical connector

An electrical connector assembly has a fixed connector, a middle connector, and a plug connector. The fixed connector is attached to a circuit member of an electrical device. The middle connector is connected and pulled out to and from the fixed connector in a direction same as that of the plug connector being connected and pulled out to and from the middle connector. Each of the fixed connector, the middle connector, and the plug connector is provided with engagement portions at both end portions thereof in a direction parallel to a straight line extending in a different direction from an insertion and pull-out direction. With the engagement portions, it is possible to prevent the fixed connector from coming off from the middle connector when the plug connector is pulled out.

Intermediate electrical connector device and its connecting structure

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 ().

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Tokyo, Japan

Tadashi Ohshida