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V-grooved substrate buried heterostructure In GaAsP/InP laser emitting at 1. 3. mu. m wavelength

Journal Article · · IEEE J. Quant. Electron.; (United States)
Details of the fabrication, optimization of the dimensions of the active region, characteristics, and the aging results of the V-grooved substrate buried heterostructure (VSB) InGaAsP/InP laser are described. It is shown that the VSB laser can be fabricated in one-step epitaxy as well as two-step epitaxy. The active region width below 2.5 ..mu..m and the thickness of 0.15-0.2 ..mu..m are shown to give stable fundamental mode operation and good temperature characteristics. The fundamental mode operation up to the optical output of 20 mW/facet at 25/sup 0/C and the CW operation above 100/sup 0/C are obtained. The pulse response showed the strongly damped relaxation oscillation with a frequency as high as 4.5 GHz. The spectral width under the modulation of 400 Mbit/s RZ single is as narrow as 25 A in full width at half maximum. Highly stable aging characteristics at an elevated temperature of 50/sup 0/C are obtained in both two-step epitaxy lasers and one-step epitaxy lasers.
Research Organization:
Fujitsu Labs., Ltd. Kawasaki, Japan
OSTI ID:
5967059
Journal Information:
IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. QE-18:10; ISSN IEJQA
Country of Publication:
United States
Language:
English