Telefonaktiebolaget Lm Ericsson (Publ)

Lennart Bäcklin

Paul Asger Eriksen

Odd Steijer

Christian Vieider

Thomas Ericson

Göran Palmskog

Stefan Lindgren

Hangkan Elderstig

Ylva Backlund

Mats Granberg

Krister Fröjdh

Krister Fröjd

Pontus Lundström

Christian Vjeider

The present invention is related to a method and device for precision and passive alignment such as precision and passive alignment technology for low cost array fibre access components. A laser carrier is passively aligned to an MT-interface using alignment structures on a replicated carrier. The laser carrier is based on a self-aligned semiconductor laser, flip-chip mounted on a silicon substrate with planar polymeric waveguides.

Method and device for passive alignment

Optical components intended for telecommunications purposes must be manufactured and mounted with a great degree of accuracy, since a component, such as an optochip, when mounted must be coupled optically, electrically, mechanically and thermally at the same time. In order to obtain a right-angled geometry when using surface-emitting or surface-detecting components, and to obtain a reduced optical travel path and accurate fixation of an optofiber, a reflective surface (12) which slopes at an angle of 45 degrees is arranged between a light-conducting core (16) and the active surface (10) of an optochip, and the light-conducting core has been placed closer to the reflective surface by bevelling the optofiber (9) and fitting the fiber in a V-groove and accurately fixating the fiber in the groove by means of a flat cover means (20). The aforesaid solutions relate generally to problems of a geometrical nature, but are able to provide important advantages in the arrangement of optical components in so-called optical micro-structures in comparison with earlier known techniques with regard to requirements of space, signal transmission performances and manufacturing costs.

Method and arrangement for coupling a wave guide to a component

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Stockholm, Sweden

Lennart Bäcklin