EP0441001A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Optoelectronic device having a coupling comprising a lens and arranged between an optical transmission fibre and a semiconductor laser diode

Assignee: Koninklijke Philips NV

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Filing: 1990-12-18

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Granted: —

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Expires: 2010-12-18

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Abstract

Abstract An optoelectronic device with a coupling, comprising a lens (10), between an optical transmission fibre (11) and a semiconductor laser diode (2), which device is provided with a holder (1) for the laser diode, a holder (12) for the optical transmission fibre and an intermediate piece (16) present between these two holders, the spherical lens (10) being accommodated in the cover (9) of the holder (1) of the laser diode (2), while the holder (12) of the transmission fibre contains a hollow glass rod (14) in which a core portion (11) of the transmission fibre is accommodated, the end (15) of the glass rod and the fibre core being flat and polished, while the intermediate piece (16) has a sleeve shape and slides with exact fit over the cover (9) of the holder of the semiconductor laser diode (2), which sleeve-shaped intermediate piece has two grooves spaced some distance apart, at which grooves the intermediate piece and the cover of the holder of the semiconductor laser diode are fastened to one another by means of a number of laser welds after axial alignment, while furthermore the ends of the intermediate piece (16) and the holder (12) for the transmission fibre (11) facing one another have flat surfaces perpendicular to the axial alignment direction, which surfaces are fastened to one another with a number of laser welds after transversal adjustment.

Inventors

👤 Cornelis Gerardus Schriks
👤 Hermanus Antonius Van De Pas
👤 Jan Willem Kokkelink
👤 Hendricus Franciscus Joannes J. Van Tongeren

Bibliographic Details

Application Number —

Jurisdiction EP

Data Source google_patents

Last Synchronized 2026-11-01 13:09

CPC Classifications

G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4219; G02B6/422; G02B6/4225; G02B6/4204; G02B6/421; G02B6/4236; G02B6/4237; G02B6/4292

Claims Analysis

Total Claims: 6

Claim 1

Independent Claim 288 words

An optoelectronic device having a coupling comprising a lens and arranged between an optical transmission fibre and a semiconductor laser diode, which device is provided with a holder for the semiconductor laser diode, a holder for the optical transmission fibre, and an intermediate piece present between the said two holders, the intermediate piece and one of the two holders being so arranged that they can be slipped one into the other, and after axial adjustment of the end of the transmission fibre the intermediate piece and this holder are fastened to one another by means of a number of laser welds, while the ends of the intermediate piece and of the other holder facing one another having flat surfaces perpendicular to the axial alignment direction, which surfaces lie against one another and are fastened to one another with a number of laser welds, characterized in that the lens is constructed as a spherical lens which is accommodated in a cover of the holder of the semiconductor laser diode facing the transmission fibre, and in that the holder of the optical transmission fibre is provided with a hollow glass rod in which a core portion of the optical transmission fibre is accommodated, the end of the glass rod facing the lens and the transmission fibre core being flat and polished and the intermediate piece having the shape of a sleeve which can be slipped with exact fit over the cover of the holder of the semiconductor diode, which sleeve-shaped intermediate piece has two grooves spaced apart from one another, at which grooves the intermediate piece and the cover of the holder of the semiconductor laser diode are fastened to one another by means of a number of laser welds.

Claim 2

Dependent Claim 51 words

An optoelectronic device as claimed in Claim 1, characterized in that a single-mode optical transmission fibre is used and that the flat, polished end of the glass rod and the transmission fibre core are arranged at an oblique angle of 5-15° relative to a plane perpendicular to the axial alignment direction.

Claim 3

Dependent Claim 70 words

An optoelectronic device as claimed in Claim 1 or 2, characterized in that the holder for the optical transmission fibre comprises a flat, annular part which, after being adjusted relative to the intermediate piece, is fastened to the latter by means of laser welds and which surrounds the glass rod with the transmission fibre core which project from this annular part to the exterior at the end facing the lens.

Claim 4

Dependent Claim 36 words

An optoelectronic device as claimed in Claim 1, 2 or 3, characterized in that the holder of the optical transmission fibre is provided with a connector to which an external optical transmission fibre can be coupled.

Claim 5

Dependent Claim 51 words

An optoelectronic device as claimed in Claim 4, characterized in that it is included in a carrier member around the sleeve-shaped piece, to which carrier member a connector part is fastened, the coupling with an optical transmission fibre present in an external connector being achieved by means of a centring spring.

Claim 6

Dependent Claim 36 words

An optoelectronic device as claimed in Claim 4, characterized in that it is included in a carrier member around the sleeve-shaped piece, the optical transmission fibre of the optoelectronic device issuing into a male standard ferrule.

References Cited (Backward Citations)

GB2079966A Cited

EP0197842A1 Cited

EP0304182B1 Cited

EP0345874A1 Cited

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