Introduction: Polarisation mode dispersion (PMD) is an important factor in the performance of long-distance high speed optical transmission systems. There is clearly a need for a practical approach that supports the network provider’s planning and route design process for possible capacity upgrading in existing fibre plants, such as to retrofit 10 Gbit/s dense wave division multiplexing (DWDM) ...

We demonstrate the design, fabrication and characterization of mid-infrared photonic crystal waveguides on a silicon-on-insulator platform, showing guided modes in the wavelength regime between 2.9 and 3.9 µm. The characterization is performed with a proprietary intra-cavity Optical Parametric Oscillator in a free space optical setup and with a fibre coupled setup using a commercial Quantum Cas...

Kerr nonlinearity imposes a limit on the achievable transmission performance and capacity of optical fibre communication links. We show that the nonlinear distortions of a pair of phase-conjugated twin waves are essentially anticorrelated, so cancellation of signal-to-signal nonlinear interactions can be achieved by coherently superimposing the twin waves at the end of the transmission line. We...

Molybdenum disulfide (MoS2), whose monolayer possesses a direct band gap, displays promising applications in optoelectronics, photonics, and lasers. Recent researches have demonstrated that MoS2 has not only a significant broadband saturable absorption performance, but also a higher optical nonlinear response than graphene. However, MoS2 shows much lower optical damage threshold owing to the po...

Expertise of packaging for optoelectronic components requires the solution of optical, mechanical and electrical problems in the same way. The purpose of this study is to present three-dimensional simulations using finite element method (FEM) of thermomechanical stresses and strains in transmitter Laser modules induced by Nd:YAG crystal Laser welds on main sub-assembly Laser submount. Non-linea...

Wavelength-tunable deep-ultraviolet (DUV; ~200–300 nm) and vacuum-ultraviolet (VUV; ~100–200 nm) lasers are needed in fields such as lithography1, medicine1 and spectroscopy2. However, many laser sources in this wavelength range, including excimerand ion-based DUV and VUV lasers, are complex and expensive to manufacture and operate because of their high power consumption, short lifetime, low ef...

We demonstrate error-free 4×10 Gbit/s 1310 nm DWDM simplified-design transmission over 200 km of standard single mode fibre without any dispersion compensation using SOAs. Introduction Recently, optical communication systems operating at multi-Gbit/s, such as 10 Gigabit Ethernet are becoming increasingly important in local area networks (LANs), metropolitan area networks (MANs) and storage are ...