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Reduced Temperature Dependence of Lasing Wavelength in Membrane Buried Heterostructure DFB Lasers With Polymer Cladding Layers

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6 Author(s)
Sakamoto, S. ; Quantum Nanoelectron. Res. Center, Tokyo Inst. of Technol. ; Kawashima, H. ; Naitoh, H. ; Tamura, S.
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An athermal operation of the lasing wavelength in a membrane buried heterostructure distributed feedback (BH-DFB) laser was demonstrated by adopting a polymer (benzocyclobutene) cladding layer which has a negative temperature coefficient of refractive index. Membrane BH-DFB lasers of core thickness 65 nm were operated under room-temperature continuous-wave conditions. The temperature dependence of the lasing wavelength was measured to be 2.45times10-2 nm/degC, which is about 20%-30% of that for conventional semiconductor lasers

Published in:

Photonics Technology Letters, IEEE  (Volume:19 ,  Issue: 5 )