A compact nine-channel multiwavelength laser

Abstract

A phased-array-based multiwavelength laser has been realized on a chip area of 3.5×2.5 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . The device has nine channels, spaced at 400 GHz around a central wavelength of 1.55 μm. Its performance is characterized by a minimum threshold current of 101 mA, a maximum fiber-coupled power of 0.37 mW, and a linewidth of 21 MHz. In addition, simultaneous four-channel operation is demonstrated.