Reducing the spectral width of high speed oxide confined VCSELs using an integrated mode filter
Paper i proceeding, 2012

We have reduced the spectral width of high speed oxide confined 850 nm VCSELs using a shallow surface relief for suppression of higher order transverse modes. The surface relief acts as a mode filter by introducing a spatially varying and therefore mode selective loss. The VCSEL employs multiple oxide layers for reduced capacitance which leads to a strong index guiding and a large spectral width in the absence of a mode filter. With an appropriate choice of surface relief parameters, the RMS spectral width for a 5 jam oxide aperture VCSEL is reduced from 0.6 to 0.3 nm. The small signal modulation bandwidth is 19 GHz. Due to reduced effects of chromatic and modal fiber dispersion, the maximum error-free (bit-error-rate < 10(-12)) transmission distance at 25 Gb/s over OM3+ fiber is increased from 100 to 500 m.

surface-emitting lasers

surface relief

transverse modes

output power

spectral width

high speed modulation

mw

mode filter

VCSEL

Författare

Erik Haglund

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Åsa Haglund

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Johan Gustavsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Benjamin Kögel

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Petter Westbergh

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Anders Larsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Proceedings of SPIE - The International Society for Optical Engineering

0277786X (ISSN)

Vol. 8276 Article Number: 82760L- 82760L

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1117/12.908424

ISBN

978-0-81948-919-7

Mer information

Skapat

2017-10-07