Instead, one could modulate a carrier by changing its instantaneous frequency, which is frequency modulation or FM and is used for high-fidelity broadcasting. Yet another way to modulate a carrier is ...

NTT stabilized the frequency of an electro-optic modulation-based optical frequency comb for high-speed and large-capacity optical comms applications.

Compact and efficient optical frequency combs are critical for modern technologies like spectroscopy, metrology, and ...

NTT Corporation and Tokyo Denki University have succeeded in further stabilizing the graduated frequency of an optical frequency ruler generated by modulating the intensity and phase of laser ...