Unimpaired phase-sensitive amplification by vector four-wave mixing near the zero-dispersion frequency.

Phase-sensitive amplification (PSA), which is produced by degenerate four-wave mixing (FWM) in a randomly-birefringent fiber, has the potential to improve the performance of optical communication systems. Scalar FWM, which is driven by parallel pumps, is impaired by the generation of pump-pump and pump-signal harmonics, which limit the level, and modify the phase sensitivity, of the signal gain. In contrast, vector FWM, which is driven by perpendicular pumps, is not impaired by the generation of harmonics. Vector FWM produces PSA with the classical properties of a one-mode squeezing transformation

Quadrature demultiplexing using a degenerate vector parametric amplifier

We report on quadrature demultiplexing of a quadrature phase-shift keying (QPSK) signal into two cross-polarized binary phase-shift keying (BPSK) signals with negligible penalty at bit-error rate (BER) equal to 10−9. The all-optical quadrature demultiplexing is achieved using a degenerate vector parametric amplifier operating in phase-insensitive mode. We also propose and demonstrate the use of a novel and simple phase-locked loop (PLL) scheme based on detecting the envelope of one of the signals after demultiplexing in order to achieve stable quadrature decomposition

Recent Advances in Parametric Amplification and Processing

Recent advances in parametric processing are reviewed. All optical multicasting based on data driven pump parametric amplifier is used as used as example of scalable networking function provided by parametric platform

Experimental Study of Crosstalk in a Pump-Modulated Parametric Multicaster

We present an experimental study of crosstalk in a 1:40 multicasting architecture based on a one-pump modulated parametric amplifier. The optimal operating region is determined by an extensive sweep of pump and signal powers

Scalable Multicasting in One-Pump Parametric Amplifier

We report the experimental demonstration of all-optical wavelength multicasting of OC-768 (40 Gbps) channel using a single-pass, pump modulated parametric amplifier. The performances of 1-to-20 and 1-to-40 multicasting with excellent signal fidelity were observed. The impairment mechanisms were identified from cascaded filtering, linear and nonlinear crosstalk. It is shown that the parametric amplifier offers a wide range of operation characterized by minimal multicast penalty.We show that all multicast channels have an error free performance with Q factors well above the forward error correction (FEC) limit within the designed operating range

1-to-40 Multicasting and Amplification of 40 Gbps Channels in Wideband Parametric Amplifier

We report the first experimental demonstration of all-optical wavelength multicasting of OC-768 NRZ data using a pump modulated parametric amplifier. The performance of 40-fold multicasting with excellent signal integrity retention is described

Self-Seeded Multicasting of 320 Gb/s Data in a 2-Pump Parametric Amplifier

We report first experimental demonstration of single stage, self-seeded 2-pump fiber optic parametric amplifier for simultaneous wavelength conversions. 320 Gb/s single channel OTDM signal was successfully copied to 5 wavelengths with <3 dB Q-factor penalty

160-Gb/s optical time division multiplexing and multicasting in parametric amplifiers

We report the generation of an optical time division multiplexed single data channel at 160 Gb/s using a one-pump fiber-optic parametric amplifier, and its subsequent multicasting. A two-pump fiber optic parametric amplifier was used to perform all-optical multicasting of 160 Gb/s channel to four data streams. New processing scheme combined the increase in signal extinction ratio and low-impairment multicasting using continuous-wave parametric pumps. Selective conjugation of 160 Gb/s was demonstrated for the first time

1-to-40 Channel Multicasting in Wideband Parametric Amplifier

All optical multicasting using one-pump modulated parametric optical amplifier is reported. For a 10 Gb/s NRZ system, 1:40 multicasting is demonstrated with less than 0.5 dB power penalty and minimum 12.5 dB conversion efficiency