Abstract

Integrated tunable lasers have continuously been a focus point because of their essential role in numerous applications. Their development has been further accelerated by the development of generic foundry platforms that largely opened the way to custom photonic integrated circuits and to the emergence of exciting new structures showing outstanding performances combined with mass-manufacturability. Among them the intra-cavity asymmetric Mach-Zehnder interferometer (AMZI) has shown great promises [1] as they enable wavelength tuning over a wide spectral range. Nevertheless, despite the wide tuning range, a precise control approach for the AMZI has not been derived yet [2]. Continuous effort has been made in this direction [3,4], however, a sequential selection of the longitudinal modes of the laser cannot be achieved and wavelength gaps within the AMZI’s free spectral range (FSR) are still present. Hence, a technique able to access the entire FSR of the AMZI with continuous wavelength tuning remains to be developed.

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