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

Abstract

This paper reports a new design of optical time-division multiplexed (OTDM) systems that possess a functionality of simultaneous time demultiplexing and wavelength multicasting based on the cascaded four-wave mixing in a dispersion-flattened highly nonlinear photonic crystal fiber (DF-HNL-PCF). A module of OTDM demultiplexing and wavelength multicasting can be feasibly implemented by using a 3 dB optical coupler, a high-power erbium-doped fiber amplifier, a short-length DF-HNL-PCF, and a wavelength demultiplexer in the simple configuration. We also carry out an experiment on the proposed system to demonstrate the 100–10 Gbit s−1 OTDM demultiplexing with wavelength conversion simultaneously at 4 multicast wavelengths. It is shown that error-free wavelength multicasting is achieved on two wavelength channels with the minimum power penalty of 3.2 dB relative to the 10 Gbit s−1 back-to-back measurement, whereas the bit error rates of other two multicasting channels are measured to be about 10−6–10−5. Moreover, we propose the use of a proper error-correcting code to improve the multicasting performance of such an OTDM system, and our work reveals that the resulting system can theoretically support error-free multicasting of the OTDM-demultiplexed signal on four wavelength channels.

Bi2O2Te Nanosheets Saturable Absorber‐Based Passive Mode‐Locked Fiber Laser: From Soliton Molecules to Harmonic Soliton

“…However, due to the limited output power of the pump laser used in this study, only 238th order harmonics were observed. It should be noted that the output harmonic pulses exhibited a higher repetition rate and excellent SNR under moderate pump power levels, which is preferable for engineering applications, including ultrahigh‐speed optical time‐division multiplexing systems, [ 46 ] ultrafast all‐optical sampling, [ 47 ] and all‐optical clock recovery. [ 48 ]…”

“…However, due to the limited output power of the pump laser used in this study, only 238th order harmonics were observed. It should be noted that the output harmonic pulses exhibited a higher repetition rate and excellent SNR under moderate pump power levels, which is preferable for engineering applications, including ultrahigh-speed optical time-division multiplexing systems, [46] ultrafast all-optical sampling, [47] and all-optical clock recovery. [48] In addition, the performances of the proposed SA and SESAM [49] as well as those of various reported typical 2D SA-based (including graphene, [50] carbon nanotubes, [51] gold nanowires, [52] TIs, [53,54] transition metal dichalcogenides (TMDs), [55][56][57][58] Metal-organic frameworks (MOFs), [59] ferromagnetic insulators, [60] BP, [61] MXenes, [62] bismuthine, [63] tellurene, [64] and antimonene [65] ) passive mode-locking fiber lasers are summarized in Table 1.…”

Design of all-normal dispersion with Ge11.5As24Se64.5/Ge20Sb15Se65 chalcogenide PCF pumped at 1300 nm for supercontinuum generation

“…where, α is the loss coefficient and ( 0 ) = / is the dispersion coefficient of n-th order associated with the propagation constant ( 0 ) extension of the Taylor series around a pump frequency 0 . The first term 0 provides an efficient propagating optical mode index and the second and third terms ( 1 and 2 ) are related to the group velocity and the GVD of the pulse (Chauhan et al 2018;Hui et al 2015).…”

Design Of All-Normal Dispersion With Ge11.5As24Se64.5/Ge20Sb15Se65 Chalcogenide PCF Pumped At 1300nm For Supercontinuum Generation

“…where, α is the loss coefficient and 𝛽 𝑛 (𝜔 0 ) = 𝑑 𝑛 𝛽/ 𝑑𝜔 𝑛 is the dispersion coefficient of n-th order associated with the propagation constant 𝛽(𝜔 0 ) extension of the Taylor series around a pump frequency 𝜔 0 . The first term 𝛽 0 provides an efficient propagating optical mode index and the second and third terms (𝛽 1 and 𝛽 2 ) are related to the group velocity and the GVD of the pulse (Chauhan et al 2018;Hui et al 2015).…”