We present novel 1550 nm InGaAsP MQW based broad area single emitters with 100 μm stripe width showing 4.9 W CW output power at 20 °C operation temperature and a maximum wall plug efficiency of 40%. An optimized low loss large optical cavity design has been used, allowing for a narrow optical far-field of 25° x 15°FHWM. Furthermore respective wavelength stabilized lasers have been realized.
We present a novel Dual DFB laser for high-speed direct modulation. The design comprises two identical quarter wavelengths shifted DFBs in mirrored configuration separated by a passive waveguide. This structure utilizes the effect of photon-photon resonance to increase the modulation bandwidth of 57.6 GHz. Operation of these devices under large signal modulation at 56 Gbps and 72 Gbps is demonstrated.
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