Recently observed dynamic development of photonic integrated circuits (PICs) technology enabled significant broadening of potential application area, initially focused on high speed optical communication. One of the prospective and emerging fields is optical sensing, where photonic chips can play twofold role of an optical interrogator and an optical transducer itself. In this paper we discuss the possibilities and perspectives of deploying PIC-based solutions for both these applications.
In this work a study on three different concepts of photonic integrated multichannel transmitters for applications in WDM-PON access systems is presented. The devices differ in design of the main components of the chip – the lasers and modulators are optimized for different technology platforms. All are compared and analyzed with respect of the fundamental parameters like spectral and power characteristics of the lasers and performance of the amplitude modulators. The transmitters were designed in a generic approach and fabricated in multi-project wafer runs as InP-based monolithic photonic integrated circuits.