论文信息 - Direct coupling of VCSELs to plastic optical fibers using guide holes patterned in a thick photoresist

Direct coupling of VCSELs to plastic optical fibers using guide holes patterned in a thick photoresist

In this letter, we report a simple passive alignment method to couple plastic optical fibers (POFs) to vertical-cavity surface-emitting lasers (VCSELs) for use in parallel optical interconnects. Polymer guide holes were fabricated directly on the top of VCSELs by means of standard photolithography using SU-8 epoxy-based thick photoresist. Perfluorinated graded-index POFs were inserted and fixed in the guide holes to provide butt-coupled packaging modules. For a VCSEL of 15-/spl mu/m diameter and a POF of 124-/spl mu/m core diameter, coupling efficiencies were obtained between about 80% and 50%, depending on drive current. The standard deviation of the efficiency at a drive current of 10 mA was 5.9% for a 1 /spl times/ 5 array.

H. Sakata | A. Imada | T. Ouchi | T. Sato

[1] E. Zeeb,et al. Butt-coupling efficiency of VCSELs into multimode fibers , 1997, IEEE Photonics Technology Letters.

[2] B. Dhoedt,et al. Direct MT(TM)-compatible connectorisation of VCSEL and LED-arrays to plastic optical fiber ribbon for low cost parallel datalinks , 1999, 1999 Proceedings. 49th Electronic Components and Technology Conference (Cat. No.99CH36299).

[4] M. Kicherer,et al. Multi-Gb/s graded-index POF data link with butt-coupled single-mode InGaAs VCSEL , 2000, IEEE Photonics Technology Letters.

[5] Andreas Neyer,et al. 64 channel 2D POF-based optical array interchip interconnect , 1999 .

[6] H. Kosaka,et al. Plastic-based receptacle-type VCSEL-array modules with one and two dimensions fabricated using the self-alignment mounting technique , 1997, 1997 Proceedings 47th Electronic Components and Technology Conference.

[7] Kenichi Iga,et al. Surface emitting semiconductor lasers , 1988 .

[8] A. Y. Cho,et al. 90% coupling of top surface emitting GaAs/AlGaAs quantum well laser output into 8 mu m diameter core silica fibre , 1990 .

[9] Karl Joachim Ebeling,et al. Planar proton implanted VCSEL's and fiber-coupled 2-D VCSEL arrays , 1995 .

[10] Y. Koike,et al. Progress of low-loss GI polymer optical fiber from visible to 1.5-μm wavelength , 1997 .