Title :
Numerical Simulation of a lightwave synthesized frequency sweeper incorporating an optical SSB Modulator composed of four optical phase Modulators
Author :
Takesue, Hiroki ; Horiguchi, Tsuneo ; Kobayashi, Tetsuro
Author_Institution :
NTT Access Network Service Syst. Labs., Chiba, Japan
fDate :
11/1/2002 12:00:00 AM
Abstract :
We describe the numerical analysis of a lightwave synthesized frequency sweeper (LSFS) that uses an optical single-sideband (SSB) modulator composed of four optical phase modulators. The SSB modulator realizes a large frequency shift in the LSFS. This means that we can reduce the number of pulse circulations in the LSFS cavity to cover a given frequency sweep range. We propose a frequency-domain analysis method for the LSFS, in which a general optical modulator is expressed by using a matrix that includes optical phase terms. We employ this method to simulate the LSFS for several different phaseand group-velocity dispersion values in the lightpaths in the LSFS cavity. The results indicate that we can realize a linear frequency sweep by adjusting the phase change of the modulation signal during the cavity round-trip time.
Keywords :
electro-optical modulation; frequency synthesizers; frequency-domain analysis; optical communication equipment; optical dispersion; optical resonators; phase modulation; LSFS cavity; acoustooptic modulator; cavity round-trip time; electrooptic device; four optical phase modulators; frequency sweep range; frequency-domain analysis; general optical modulator; group-velocity dispersion values; large frequency shift; lightwave synthesized frequency sweeper; linear frequency sweep; matrix; numerical analysis; numerical simulation; optical SSB modulator; optical phase terms; optical single-sideband modulator; phase-velocity dispersion values; pulse circulations; Amplitude modulation; Erbium-doped fiber amplifier; Frequency synthesizers; Numerical simulation; Optical filters; Optical modulation; Optical pulses; Phase modulation; Stimulated emission; WDM networks;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2002.806354