Reducing the spectral width of high speed oxide confined VCSELs using an integrated mode filter

Haglund, Erik,1985Chalmers tekniska högskola,Chalmers University of Technology (author)

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

TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering hsv//eng
surface-emitting lasers
surface relief
transverse modes
output power
spectral width
high speed modulation
mw
mode filter
VCSEL

Haglund, Åsa,1976Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)gu95asha (author)
Gustavsson, Johan,1974Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)johangus (author)
Kögel, Benjamin,1979Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)kogel (author)
Westbergh, Petter,1981Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)petwes (author)
Larsson, Anders,1957Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)andersla (author)
Chalmers tekniska högskola (creator_code:org_t)

In:Proceedings of SPIE - The International Society for Optical Engineering: SPIE8276, s. Article Number: 82760L-0277-786X1996-756X9780819489197

By the author/editor: Haglund, Erik, 1 ...; Haglund, Åsa, 19 ...; Gustavsson, Joha ...; Kögel, Benjamin, ...; Westbergh, Pette ...; Larsson, Anders, ...

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