Investigation and Suppression of Fiber Nonlinearities Using Injection-Locking in OFDM-WDM System

Figure 4

Received optical spectra with significant FWM crosstalk products as a function of bias current of slave laser: (a) 8 mA, (b) 9 mA, (c) 10 mA, (d) 20 mA, (e) 30 mA, (f) 40 mA, (g) 50 mA, and (h) 60 mA.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)