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High speed directly modulated single mode lasers are becoming important optical components for short reach communication. In order to cover a transmission distance that is required for passive optical network and inter data-center applications, the chirp managed laser is an attractive transmitter technology. This technology enables to use a directly modulated laser for longer reach systems, resulting...
We demonstrate 56 Gb/s direct modulation of a high bandwidth heterogeneously integrated InP/Si DFB laser, and transmission over 2 km of non-zero dispersion shifted single mode fiber. The high bandwidth of the laser is achieved by exploiting the photon-photon resonance effect.
In this work we characterize the RF modulation characteristics and the dynamic range of a III-V-on-Silicon DFB laser. The direct modulation of this laser is demonstrated with a 1Gbps radio-over-fiber link at a carrier frequency up to 24 GHz using QPSK modulation. 480Mbps 64-QAM transmission at 3.5 GHz carrier frequency is demonstrated as well. In the 480 Mbps experiment both the transmitter and receiver...
We demonstrate 40 Gb/s PAM-4 and Duobinary direct modulation of a heterogeneously integrated InP on SOI DFB laser. Transmission measurement was performed using a 2 km NZ-DSF with a PRBS 215 and 1.5 Vpp swing voltage.
Heterogeneously integrated DFB lasers, consisting of thin InP membranes coupled to low loss Si wire waveguides possess several advantages compared to traditional all-InP DFB lasers. The thin membranes give a large optical confinement factor and their small surface area results in relatively small parasitic capacitances. Both properties make these lasers very well suited for high speed direct modulation...
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