Experimental Study of Phase and Intensity Noise in a Monolithically Integrated DFB Laser IQ Modulator PIC at QPSK operation

Conference: ECOC 2016 - 42nd European Conference on Optical Communication
09/18/2016 - 09/22/2016 at Düsseldorf, Deutschland

Proceedings: ECOC 2016

Pages: 3Language: englishTyp: PDF

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Lange, Sophie; Kaiser, Ronald; Gruner, Marko; Schell, Martin (Fraunhofer Institute for Telecommunications, HHI, Berlin, Germany)

Phase noise in monolithic optical laser-modulator PICs influences QPSK performance depending on laser bias current and internal optical feedback. The phase noise was most significant at lower symbol rates and minimized at high symbol rates at selected bias points.