Abstract:This paper review our recent work on silicon modulators based on free carrier concentration, working in the O-band of optical communications (1260 nm -1360 nm) for short distance applications. 25 Gbit/s OOK modulation is obtained using a driving voltage of 3.3 Vpp , and QPSK dual-drive Mach-Zehnder modulator (DDMZM) operating in the O-band is demonstrated for the first time.
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