Extended Reach 10 Gb/s Transmission with an Optical I/Q Modulator Using VCSELs over OFDM-Based Multimode Fiber Link

Figure 2

Optical spectra of the optical OFDM signals: (a) launch spectra in case of an optical I/Q modulator; (b) launch spectra in case of a direct modulator; (c) received spectra from the MMF link in case of an optical I/Q modulator; and (d) received spectra from the MMF link in case of a direct modulator.

(a)

(b)

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(d)