Optical Transceiver Socket Positioning Pin Alignment

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Solution Overview

Problem

In network switch devices with co-packaged optics, the existing pluggable transceiver architecture limits the increase in capacity due to the number of transceivers connected to the front panel, and there is a need for improved positioning accuracy to ensure reliable electrical connections between the substrate and the optical transceiver.

Innovation Solution

The proposed optical device and transceiver configuration include a first substrate, an optical transceiver that can be shifted relative to the substrate, a socket with connection conductors and an insulator, and a positioning pin that extends between the substrate and the optical transceiver to improve positioning accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the optical transceiver is miniaturized to increase capacity, then the number of transceivers that can be mounted increases, but the positioning accuracy between substrate and transceiver deteriorates

Engineering Contradiction:
ImprovecapacityVSAvoidpositioning accuracy
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

A socket is introduced as an intermediary component between the substrate and the optical transceiver. The socket includes positioning features such as positioning pins or positioning holes that ensure accurate alignment during assembly, thereby maintaining positioning accuracy even as the transceiver size is reduced to increase overall device capacity.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Volume of moving object

If the interval between conductors is narrowed to reduce size, then the transceiver becomes more compact, but the reliability of electrical connection deteriorates

Engineering Contradiction:
Improvetransceiver sizeVSAvoidelectrical connection reliability
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

The socket serves as a mediator that houses the connection conductors and provides a stable interface between the substrate and transceiver. This intermediary structure protects the narrow-spaced conductors from misalignment and mechanical stress, ensuring reliable electrical connections despite the reduced conductor intervals required for compact transceiver design.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If the number of transceivers connected to front panel is increased to enhance capacity, then the data center traffic handling improves, but the device complexity increases

Engineering Contradiction:
Improvedata center traffic capacityVSAvoidtransceiver connection complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The socket is designed as a universal connector that can accommodate different types of optical transceivers through standardized interfaces. This multi-functional design allows multiple transceivers to be connected to the front panel with consistent assembly procedures, increasing traffic capacity while managing device complexity through standardization.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250189735A1Optical device and optical transceiver
Publication Date: 2025.06.12 FURUKAWA ELECTRIC CO LTD
  • US20250189735A1 patent drawing
  • US20250189735A1 patent drawing
  • US20250189735A1 patent drawing

AI summary

An optical device includes: a first substrate including a first surface facing a first direction and intersecting with the first direction; an optical transceiver provided to be shifted from the first substrate in the first direction; a socket positioned between the first substrate and the optical transceiver and including a plurality of connection conductors electrically connecting a conductor of the first substrate and a conductor of the optical transceiver, and an insulator supporting the plurality of connection conductors; and a positioning pin extending in the first direction between the first substrate and the optical transceiver and penetrating the socket, the positioning pin being configured to position the first substrate, the optical transceiver, and the socket in a direction intersecting with the first direction.