Pluggable Single-Mode Fiber-Array-to-PIC Coupling Using Micro-Lenses

Single-mode optical coupling between fiber and photonic integrated circuit (PIC) requires precision alignment and bonding, and significantly adds to the cost of photonic packaging. This article describes how a pair of micro-lens arrays-one on the Si-PIC and the other on the fiber-array- can be used...

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Bibliographic Details
Published in:IEEE photonics technology letters 2017-11, Vol.29 (22), p.1943-1946
Main Authors: Scarcella, Carmelo, Gradkowski, Kamil, Carroll, Lee, Jun-Su Lee, Duperron, Matthieu, Fowler, Daivid, O'Brien, Peter
Format: Article
Language:English
Subjects:
Couplings
Gratings
Integrated optics
integrated optics devices
Lenses
micro-optical devices
Optical fiber couplers
Optical fiber devices
photonic integrated circuits
Photonics
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Summary:Single-mode optical coupling between fiber and photonic integrated circuit (PIC) requires precision alignment and bonding, and significantly adds to the cost of photonic packaging. This article describes how a pair of micro-lens arrays-one on the Si-PIC and the other on the fiber-array- can be used to achieve fiber-to-PIC grating-coupling with an insertion-loss of 1.7 dB (i.e., a coupling efficiency of 68%) at 1300 nm, and a 1 dB alignment tolerance of ± 30 μm. Such relaxed tolerances allow for a "pluggable" connector to have a make-break insertion-loss reproducibility of 0.2 dB (one standard deviation).
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2017.2757082