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Optical Engineering • Open Access

Passively aligned multichannel fiber-pigtailing of planar integrated optical waveguides
Author(s): Johannes Kremmel; Tobias Lamprecht; Nino Crameri; Markus Michler

Paper Abstract

A silicon device to simplify the coupling of multiple single-mode fibers to embedded single-mode waveguides has been developed. The silicon device features alignment structures that enable a passive alignment of fibers to integrated waveguides. For passive alignment, precisely machined V-grooves on a silicon device are used and the planar lightwave circuit board features high-precision structures acting as a mechanical stop. The approach has been tested for up to eight fiber-to-waveguide connections. The alignment approach, the design, and the fabrication of the silicon device as well as the assembly process are presented. The characterization of the fiber-to-waveguide link reveals total coupling losses of ( 0.45 ± 0.20    dB ) per coupling interface, which is significantly lower than the values reported in earlier works. Subsequent climate tests reveal that the coupling losses remain stable during thermal cycling but increases significantly during an 85°C/85 Rh-test. All applied fabrication and bonding steps have been performed using standard MOEMS fabrication and packaging processes.

Paper Details

Date Published: 16 February 2017
PDF: 6 pages
Opt. Eng. 56(2) 026115 doi: 10.1117/1.OE.56.2.026115
Published in: Optical Engineering Volume 56, Issue 2
Show Author Affiliations
Johannes Kremmel, NTB Interstaatliche Hochschule für Technik Buchs (Switzerland)
Tobias Lamprecht, vario-optics ag (Switzerland)
Nino Crameri, vario-optics ag (Switzerland)
Markus Michler, NTB Interstaatliche Hochschule für Technik Buchs (Switzerland)

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