28-Gbaud InP square or hexagonal 16-QAM modulator
06 March 2011
We demonstrate a monolithic InP modulator that produces 28-Gbaud square or hexagonal 16QAM using four integrated amplitude/phase modulators. We achieve bit-error rates of 2.7×10-3 and 3.8×10-3, respectively. ©2010 Optical Society of America OCIS codes: (060.2330) Fiber optics communications; (130.3120) Integrated optics devices