Title :
Reduced Temperature Dependence of Lasing Wavelength in Membrane Buried Heterostructure DFB Lasers With Polymer Cladding Layers
Author :
Sakamoto, Shinichi ; Kawashima, Hiroyuki ; Naitoh, Hideyuki ; Tamura, Shigeo ; Maruyama, Takeo ; Arai, Shigehisa
Author_Institution :
Quantum Nanoelectron. Res. Center, Tokyo Inst. of Technol.
fDate :
3/1/2007 12:00:00 AM
Abstract :
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
Keywords :
III-V semiconductors; distributed feedback lasers; gallium arsenide; gallium compounds; indium compounds; polymer films; refractive index; semiconductor lasers; thermo-optical effects; 293 to 298 K; 65 nm; GaInAsP-InP; athermal operation; benzocyclobutene; buried heterostructure lasers; continuous-wave conditions; distributed feedback lasers; membrane lasers; negative temperature coefficient; polymer cladding layers; refractive index; room-temperature conditions; semiconductor lasers; temperature dependence; Biomembranes; Distributed feedback devices; Laser feedback; Optical pumping; Optical refraction; Optical waveguides; Polymers; Refractive index; Semiconductor lasers; Temperature dependence; 1.5-$mu$ m semiconductor laser; $hbox{CH}_{4}/hbox{H}_{2}$ reactive ion etching (RIE); GaInAsP–InP; athermal waveguide; benzocyclobutene (BCB); distributed feedback (DFB); membrane laser;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.891205
