Widely Tunable Optical Frequency Comb Generator on a Generic InP Platform

Optical frequency comb generators (OFCGs) play a key role in applications like spectroscopy and microwave photonics [1]. While requirements vary by application, compact OFCG development is essential for widespread industrial adoption. Photonic integrated circuits (PICs) enable this compactness and, when fabricated on a generic foundry platform, offer cost efficiency and easy integration of optical functionalities. Tunability both in wavelength and free spectral range (FSR) is critical in spectroscopy and THz/mmW generation [1]. Modulation-based methods, known for high tunability, are employed in this work to address these requirements effectively.