Modulation characteristic of waveguide-type optical frequency comb generator

Measurement of subpicosecond optical waveforms using a resonator-based phase modulator

“…We assume that the phase modulation has sinusoidal form. Summing similarly to [24] all of the output pulses emerging from the Fabry-Perot resonator after multiple reflections, we obtain under conditions (6) and (7) the expression for the intensity of the modulated pulses identical to (1) with the modulation function expressed as…”

“…2b) with an incorporated electrooptic phase modulator. The FabryPerot resonator can have a bulk-type configuration with mirrors separated from an electrooptic crystal [23] or a wave-guide config- uration with mirrors deposited on two end facets of the waveguide [24]. The fiber ring coupled to a fiber contains a phase modulator and an erbium doped fiber amplifier (EDFA) for loss compensation [25,26] (Fig.…”

“…A similar enhancement of modulation and increasing its bandwidth was implemented for optical comb generators by using Fabry-Perot [23,24] or ring [25,26] resonators. A CW laser was exploited as the light source.…”

High-resolution spectroscopy based on optical phase modulator and optical frequency comb

“…For the purpose of range expansion, the optical frequency comb technology is highly helpful. Recently, it has become convenient to generate a wide comb envelope spanning more than 7 THz [11]. A femtosecond laser can also be used as a wide-band comb.…”

Cavity effect on phase noise of Fabry-Perot modulator-based optical frequency comb

“…As for the frequency (Fourier) domain, which gives information regarding the phase noise properties of individual comb tones, there are two main contributions to the phase noise. The first comes from the phase noise of the seed light which is 'copied' onto each comb tone [3]. Thus, the use of a seed light source with well stabilized frequency/phase is needed for low noise operation of the FP-EOM.…”