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

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...

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Bibliographic Details
Published in:IEEE photonics technology letters 2007-03, Vol.19 (5), p.291-293
Main Authors: Sakamoto, S., Kawashima, H., Naitoh, H., Tamura, S., Maruyama, T., Arai, S.
Format: Article
Language:English
Subjects:
1.5- mu m semiconductor laser
athermal waveguide
benzocyclobutene (BCB)
Biomembranes
Cladding
distributed feedback (DFB)
Distributed feedback devices
GaInAsP-InP
hbox{CH}_{4}/\hbox{H}_{2} reactive ion etching (RIE)
Heterostructures
Laser feedback
Lasers
Lasing
membrane laser
Membranes
Optical pumping
Optical refraction
Optical waveguides
Polymers
Refractive index
Semiconductor lasers
Temperature dependence
Wavelengths
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Summary: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
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2007.891205