A large spot-size laser diode (LD) with tapered active stripe has been realized. The threshold current and the slope efficiency were 14 mA and 0.43 W/A, respectively at 85°C. These characteristics are comparable to those of conventional straight stripe LDs. The full width at half maximum (FWHM) of lateral and vertical far field patterns (FFPs) were 14° and 16°, respectively. The maximum coupling efficiency of the tapered LD to a 10 μm φ-core single mode fiber was -6.2 dB and horizontal 1 dB-down tolerance was ±2.0 μm
Published in:
Indium Phosphide and Related Materials, 1997., International Conference on
Date of Conference: 11-15 May 1997