Demonstration of 100 Gbit/s optical time‐division demultiplexing with 1‐to‐4 wavelength multicasting using the cascaded four‐wave mixing in photonic crystal fiber with a single control light source

Abstract

Dispersion‐flattened highly nonlinear (DF‐HNL) photonic crystal fibers are useful for ultrafast optical signal processing. In this article, 100 Gbit/s‐to‐10 Gbit/s optical time demultiplexing with simultaneous 1‐to‐4 wavelength multicasting is successfully demonstrated by use of the cascaded four‐wave mixing (FWM) in a 50 m DF‐HNL photonic crystal fiber, for the first time. This scheme uses a single control‐pulse light source only and a simple architecture. The wavelength multicasting of the time‐demultiplexed optical signal is achieved on four wavelength channels of which two can have the minimum power penalty of 3.2 dB at 10−9 bit error rate compared to the 10 Gbit/s back‐to‐back measurement. With the cascaded FWM, our proposed scheme can be used to improve the functionality of ultrahigh‐speed optical time‐division multiplexed systems/networks so as to support wavelength multicasting applications in a cost‐effective manner. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2330–2335, 2014

Bit Error Rate Analysis of an OFDM Subcarrier Modulated FSO Link with Optical Intensity Modulation and a Direct Detection Receiver

“…OTDM and OFDM schemes are in literature to increase the data rate in optical fiber communication [13][14][15][16], but each of them reaches the desired capacity in a different way. OTDM allows us to time-interleave low duty-cycle and low rate data tributaries which simplifies the speed requirements of the transmitter equipment [13,14]. The challenging points in OTDM are the timedemultiplexer which relies on the femto-second response applicable on guided wave system.…”

Design of optical time-division multiplexed systems using the cascaded four-wave mixing in a highly nonlinear photonic crystal fiber for simultaneous time demultiplexing and wavelength multicasting

“…After optical amplification, a train of ultrashort optical clock pulses is split into two parts via a 1 × 2 optical coupler (OC). One of them is modulated at 10 Gbit s −1 by a LiNbO 3 Mach-Zehnder intensity modulator with an electronic 2 31 − 1 pseudorandom binary sequence (PRBS) in the return-to-zero (RZ) format. Then the 10 Gbit s −1 optical data signal with pulse FWHM of 1.9 ps is fed into a fiber-based time-division multiplexer (MUX) that performs the 'splittingdelay-combination' processing to generate an OTDM signal at 100 Gbit s −1 and 1550.31 nm for use in our experiments.…”

“…Although we previously reported the use of XPM and FWM in two PCFs for 80 Gbit s −1 wavelength conversion and 80 Gbit s −1 -to-10 Gbit s −1 OTDM demultiplexing with 1-2 wavelength multicasting [17], respectively, the resulting OTDM demultiplexer was able to offer only 2-channel wavelength multicasting. A recent work has revealed that the number of available wavelength-multicasting channels can be doubled by using the cascaded FWM in a DF-HNL-PCF for OTDM demultiplexing [31]. That reported work, however, focused on the experimental study of such an OTDM demultiplexer with no consideration of system design and performance improvement [31], in which error-free multicasting was achieved only on two of the obtained four wavelength channels.…”

“…A recent work has revealed that the number of available wavelength-multicasting channels can be doubled by using the cascaded FWM in a DF-HNL-PCF for OTDM demultiplexing [31]. That reported work, however, focused on the experimental study of such an OTDM demultiplexer with no consideration of system design and performance improvement [31], in which error-free multicasting was achieved only on two of the obtained four wavelength channels. Thus, the number of usable multicasting channels is still restricted to two.…”