摘要:
Systems, devices, methods, and computer-readable media for preventing laser kink failures. A laser diode device can include one or more laser diodes configured to emit electromagnetic radiation coherently. The laser diode device can also include one or more submounts upon which the one or more laser diodes are mounted. The one or more submounts can include one or more through vias including one or more fill materials different from a material of the one or more submounts. Further, one or more properties of the one or more through vias in the one or more submounts can be selected to reduce an amount of mismatch between an effective coefficient of thermal expansion of the one or more laser diodes and an effective coefficient of thermal expansion of the one or more submounts.
摘要:
The present invention relates to an electronic device (1) comprising at least one electrically conductive structural piece (10) and an electronic printed card (12) with at least one electronic component (120) emitting an electromagnetic radiation (W), wherein said at least one structural piece (10) comprises walls (100a) forming a cage (100) located inside the external periphery (100b) of said at least one structural piece (10), said walls (100a) extending towards said electronic printed card (12) and said cage (100) being adapted to be positioned over said at least one electronic component (120), said cage (100) forming a one-piece with said at least one structural piece (10).
摘要:
A communication module may include a communication ground layer (338). The communication module may also include a circuit board (340). The circuit board (340) may be located proximate the communication ground layer (338). The circuit board (340) may include a stitch layer (346). The stitch layer (346) may be electrically coupled to the communication ground layer (338) via a plurality of stitch layer vias (348). Additionally, the communication module may include multiple ground vias (342). The ground vias (342) may be electrically coupled to a portion of the circuit board (340) and to the communication ground layer (338).
摘要:
This document describes techniques and apparatuses that implement a high thermal conductivity region for optoelectronic devices. In some embodiments, a printed circuit board (PCB) includes a high thermal conductivity region that extends through the PCB. The high thermal conductivity region has first and second surfaces that are approximately coplanar with exterior layers of the PCB. A side-emitting optoelectronic device is mounted to the first surface of the high thermal conductivity region via conductive material that enables conduction of the device's heat into the high thermal conductivity region. The high thermal conductivity region can then transfer the heat away from the device and toward the second surface of the high thermal conductivity region, thereby improving the device's thermal performance.
摘要:
A flexible polymer waveguide array structure serves as a stitch or jumper on an optical printed circuit board (OPCB). The flexible polymer waveguide array structure can be attached to the OPCB so that it can provide a chip-to-OPCB optical connection. The waveguide(s) in the flexible polymer waveguide array structure may be prefabricated before the flexible polymer waveguide array structure is attached to the OPCB. Alternatively, the waveguides may be fabricated after the flexible polymer waveguide array structure has been attached to the OPCB. The waveguide(s) may be subsequently formed using a printing process such as photolithography. As a consequence of forming the waveguide(s) after attachment of the flexible polymer waveguide array to the OPCB, the precision in the lateral alignment that is required when placing the flexible polymer waveguide array structure on the OPCB is generally significantly less than is required when the waveguide(s) are prefabricated.
摘要:
A light source module comprising a semiconductor light source mounted directly to a conducting trace of a multilayer printed circuit board having a core comprising a plurality of core layers electrically and thermally coupled by a plurality of buried vias wherein at least one of the core layers comprises a heat sink plane.
摘要:
A camera module includes an image sensor, a flexible printed circuit with a first side affixed to a first side of the image sensor, a plurality of metallic leads affixed to a second side of the image sensor, and a lens assembly for directing light to the image sensor articulated to the image sensor by one or more of an overmoulding attached to the leads and the flexible printed circuit. The first side of the image sensor is a side opposite the second side of the image sensor. The leads provide connection between the image sensor and leads in the flexible printed circuit.