Generation of Tunable Microwave Frequency Comb Utilizing a Semiconductor Laser Subject to Optical Injection from an SFP Module Modulated by an Arbitrary Periodic Signal

<div>Electrical spectrum of the MFC when the modulation signal frequency is 1 GHz and the attenuator coefficient of VOA is 11 dB (a) and 20 dB (b). The optical spectrum when the attenuator coefficient of VOA is 11 dB (c) and 20 dB (d) For (c) and (d), curve A denotes the optical spectrum of the optical signal generated from SL with the injection from SFP module. Curve B denotes the optical spectrum of the SFP module.</div>

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Figure 2: Generation of Tunable Microwave Frequency Comb Utilizing a Semiconductor Laser Subject to Optical Injection from an SFP Module Modulated by an Arbitrary Periodic Signal 

Figure 2 | Generation of Tunable Microwave Frequency Comb Utilizing a Semiconductor Laser Subject to Optical Injection from an SFP Module Modulated by an Arbitrary Periodic Signal 