Ultrawideband doublet pulse generation based on nonlinear polarization rotation of an elliptically polarized beam and its distribution over a fiber/wireless link

Abstract

Proposed herein is an alternative photonic scheme for the generation of a doublet UWB pulse, which is based on the nonlinear polarization rotation of an elliptically polarized probe beam. The proposed scheme is a modified optical-fiber Kerr shutter that uses an elliptically polarized probe beam together with a linearly polarized control beam. Through theoretical analysis, it was shown that the optical-fiber-based Kerr shutter is capable of producing an ideal transfer function for the successful conversion of input Gaussian pulses into doublet pulses under special elliptical polarization states of the probe beam. An experimental verification was subsequently carried out to verify the working principle. Finally, the system performance of the generated UWB doublet pulses was assessed by propagating them over a 25-km-long standard single-mode fiber link, followed by wireless transmission. Error-free transmission was successfully achieved.

UWB doublet pulse generation using the combination of parametric amplification and cross phase modulation

“…A number of all-optical nonlinear signal processing schemes have been proposed and experimentally demonstrated for the generation of monocycle or doublet UWB pulses in the optical domain. Those schemes were based on cross-gain modulation in a fiber-optic parametric amplifier [3], an optical fiberbased nonlinear optical loop mirror (NOLM) [4], the combination of nonlinear polarization rotation and parametric amplification [5], and transfer function modification of a Kerr shutter using elliptically polarized beams [6].…”

“…A number of all-optical nonlinear signal processing schemes have been proposed and experimentally demonstrated for the generation of monocycle or doublet UWB pulses in the optical domain. Those schemes were based on cross-gain modulation in a fiber-optic parametric amplifier [3], an optical fiberbased nonlinear optical loop mirror (NOLM) [4], the combination of nonlinear polarization rotation and parametric amplification [5], and transfer function modification of a Kerr shutter using elliptically polarized beams [6].In this paper, an alternative photonic scheme is experimentally demonstrated for the generation of UWB doublet pulses based on an optical fiber-based NOLM incorporating the optical parametric amplification (OPA) effect. Because the proposed scheme is based on a fiber-integrated, all-optical signal-processing unit, there is no need for extra electro-optic conversion that would complicate the system.…”

Monocycle pulse generation based on cross-phase modulation in bismuth oxide nonlinear fiber

“…The photonic IR-UWB signal-generation schemes can be roughly classified as electro-optic-conversion-based and all-optical schemes [4][5][6][7]. The all-optical schemes use a short optical pulse as an input seed, and nonlinear optical media such as semiconductor optical amplifiers and nonlinear optical fibers are used as the signal-processing units [6,7].…”

“…Despite its various advantages, the IR-UWB technology has the fundamental limitation of distance coverage because of its low spectral-power density. As a potential solution, the use of the UWB-over-fiber technology, with which the generation, modulation, and distribution of UWB signals are implemented in the optical domain, was proposed, and its feasibility has been successfully demonstrated [3].The photonic IR-UWB signal-generation schemes can be roughly classified as electro-optic-conversion-based and all-optical schemes [4][5][6][7]. The all-optical schemes use a short optical pulse as an input seed, and nonlinear optical media such as semiconductor optical amplifiers and nonlinear optical fibers are used as the signal-processing units [6,7].…”

Photonic generation of background-free millimeter-wave ultra-wideband signals (Invited Paper)

“…The Federal Communications Commission (FCC) defined the UWB signal as a radio frequency (RF) signal that occupies a spectral bandwidth of more than 500 MHz or more than 20% fractional bandwidth with a power density no more than −41.3 dBm∕MHz [2] . Up to now, various approaches have been proposed to generate UWB signals in the centimeter-wave (CMW) band (3.1 to 10.6 GHz) for indoor communications [3][4][5][6][7] and in the millimeter-wave (MMW) band (22 to 29 GHz) for outdoor communications [8][9][10][11][12][13][14][15][16][17][18][19] . In this Review, we review recent progress on the photonic generation of UWB signals in the MMW band with emphasis on the generation of background-free and FCC compliant MMW-UWB pulses.…”