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Connection of optical waveguides to optical devices

a technology of optical waveguides and optical devices, applied in the direction of optics, instruments, optical light guides, etc., can solve the problems of deformation of the end of the waveguide, deformation of the coupling efficiency over time, and complex arrangemen

Inactive Publication Date: 2006-11-16
FIRECOMMS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while this is convenient it is often the case that coupling efficiency degrades over time due to contamination at the fibre termination and / or in the socket because they are exposed.
It appears that such an arrangement could cause deformation of the end of the waveguide.
This arrangement appears to be complex.

Method used

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  • Connection of optical waveguides to optical devices
  • Connection of optical waveguides to optical devices
  • Connection of optical waveguides to optical devices

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Embodiment Construction

Brief Description of the Drawings

[0033] The invention will be more dearly understood from the following description of some embodiments thereof, given by way of example only with reference to the accompanying drawings in which:

[0034] FIGS. 1 to 4 are perspective, end, side, and underneath plan views respectively of an optical subassembly for connection to a fibre termination;

[0035]FIGS. 5, 6, 7, and 8 are perspective, front, side, and plan views respectively of a lead frame of the subassembly;

[0036]FIG. 9 is a diagram illustrating optical coupling;

[0037]FIG. 10 is a set of plots illustrating coupling efficiency as a function of the distance between the end of the fibre and the optical device;

[0038]FIG. 11 is a diagrammatic side view of an alternative subassembly;

[0039] FIGS. 12(a) to 12(b) are views of an alternative subassembly; and

[0040] FIGS. 13(a) to 13(c) are views of a further subassembly.

DESCRIPTION OF THE EMBODIMENTS

[0041] Referring to FIGS. 1 to 8, an optical suba...

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Abstract

An optical assembly has a socket for receiving a fibre termination ferrule. A PIN diode is on a lead frame encapsulated in a transparent body. As a fibre ferrule is pushed into the socket the electronic output from the diode is monitored to determine optimum insertion distance.

Description

INTRODUCTION [0001] 1. Field of the Invention [0002] The invention relates to connection of optical devices to terminations of optical waveguides for transmitting and / or receiving data or for coupling to other waveguides. [0003] 2. Prior Art Discussion [0004] It is known to provide an optical fibre having a ferrule at its end, and a coupler for guiding the ferrule into a socket for an optical device. Typically, there is a snap-fitting fastener arrangement between the ferrule and the socket, and the socket is tapered internally to guide the fibre termination into registry. [0005] This arrangement allows fibres to be coupled to devices in the field. However, while this is convenient it is often the case that coupling efficiency degrades over time due to contamination at the fibre termination and / or in the socket because they are exposed. [0006] Patent Abstracts of Japan 10282369 describes a coupler having a laser device. Resin is filled over the laser device, an optical fibre, a photo...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G02B6/36G02B6/42
CPCG02B6/4201G02B6/4212G02B6/4292G02B6/4239G02B6/423G02B6/4253G02B6/4255
Inventor MCGARVEY, BRIANMORIARTY, THOMAS
Owner FIRECOMMS