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Spot-size expanded high efficiency 1.3 μm MQW laser diodes with laterally tapered active stripe

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6 Author(s)
Uda, A. ; Kansai Electron. Res. Lab., NEC Corp., Shiga, Japan ; Tsuruoka, K. ; Suzuki, N. ; Fukushima, K.
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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