High-Speed 850-nm VCSELs Operating Error-Free Beyond 50 Gbit/s
Poster (konferens), 2013

The 850-nm vertical-cavity surface-emitting laser (VCSEL) is a key component in today’s short reach (<100 m) optical interconnects due to low-cost fabrication, excellent high-speed properties at low drive currents, and the availability of high-speed multimode fiber (MMF) optimized for 850 nm. To meet the growing needs in data centers, near future datacom standards will require VCSELs operating well beyond the ~20 Gbit/s which today’s commercially available components are capable of. Through reduction of the electrical parasitics, improvement of the optical confinement, and optimization of the photon lifetime, we recently demonstrated a small-signal bandwidth of 28 GHz for a ~4 µm oxide aperture VCSEL. Using a VCSEL with a larger oxide aperture (~7 µm) and a 30 GHz photoreceiver with an integrated limiting amplifier (VI-systems R40-850) enabled error-free [bit error rate (BER) <10-12] transmission up to 47 Gbit/s back-to-back (BTB) and 44 Gbit/s over 50 m OM4 fiber. Error-free transmission up to 40 Gbit/s was demonstrated BTB at temperatures up to 85°C. By employing a 22 GHz photoreceiver with an integrated linear amplifier (New Focus 1484-A-50), an ~8 µm oxide aperture VCSEL could operate error-free up to 57 Gbit/s BTB, 55 Gbit/s over 50 m, and 43 Gbit/s over 100 m OM4 fiber. These results represent a significant progress of current state-of-the-art in VCSEL performance.

optical interconnects

VCSEL

data transmission

Författare

Emanuel Haglund

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Petter Westbergh

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Erik Haglund

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Johan Gustavsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Anders Larsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Optics and Photonics in Sweden, 22-23 Oct. 2013

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Telekommunikation