In this article, we report on the generation of 100-GBd (200-Gb/s) 4-level pulse-amplitude modulation (PAM-4) optical signal, without any support of digital signal processing (DSP) nor off-line equalisation. This is achieved in using an uncooled indium phosphide (InP) analog-multiplexer (AMUX)-driver and a thin film lithium niobate (TFLN) Mach-Zehnder modulator (MZM) assembly, with a -3-dB electro-optical bandwidth in excess of 85 GHz. This result paves the way for low-power DSP-free beyond-1-Tb/s transceivers for next generation optical communication systems and 6G applications. We also present the design and characterisation of the AMUX-driver integrated circuit (IC). The InP-DHBT IC shows a 2-Vppd output swing at 100 GBd in PAM-4 while operating at a 100-GSa/s sampling-rate.

We present an electro-absorption modulated laser with 6dBm modulated power leading to record power budget NRZ transmissions at 1.55μm: 37dB at 10Gb/s over 50km and 30dB at 28Gb/s over 10km with a pre-amplified photodiode.

First real-time 25-Gbit/s burst-mode operation of an integrated SOA-PIN/TIA receiver for future generation T(W)DM-PON is presented. The device has a 2.7-dB better sensitivity than APD photoreceiver and 13-dB better than PIN photoreceiver at this bitrate.

This paper summarizes the motivations and results obtained regarding the optical distribution of a 60 GHz radio signal throughout buildings to provide users with Ultra-Broad-Band Wireless Home Area Network with datarates >1Gbps and continuous coverage.

We propose and validate a new radio-over-fibre (RoF) home network architecture allowing a 60 GHz wireless signal bidirectional distribution, based on a set-up of new 60 GHz components (Mode Locked Laser and Reflective Electro-Absorption Modulator).

This paper investigates the performance of a reflective semiconductor optical amplifier in a bidirectional wavelength-division multiplexed passive optical network at 2.5 and 5 Gbit/s over 20 and 15 dB link budget.

We present a 22 mW-16nm tunable DBR-SOA, robust and simple to control. Less than 12 ns tuning speed is obtained by electrical pattern optimisation, and 10 Gb/s reconfigurable wavelength conversion compatible with packet switching is demonstrated.

A module containing an ultra-fast saturable absorber chip has been implemented with 4 independent fibres using an optimised coupling technique. Device characterisation at 10 and 20 GHz show homogeneous results among the 4 fibre ports

To replace DFB lasers in wavelength-division-multiplexing (WDM) systems, tunable lasers should provide the same output power (20 mW) and remain simple devices, We propose a two-section DBR laser with optimized design. The required settings to reach all the achievable ITU wavelengths with constant output power are simply derived from very few initial characterizations. We obtain a record 20-mW coupled output power, constant over 16 am (= 40 channels 50-GHz spaced). For the first time, power performances comparable with DFB lasers are obtained; DBR lasers are now competitive candidates for an integration in WDM systems.

2 x 40Gbit/s WDM regenerated, dispersion-managed transmission over transoceanic distances is demonstrated using InP Mach-Zehnder modules. The impact of the channel spacing on system performance is also investigated, resulting in error-free transmission with a channel spacing as small as 200GHz.

Simultaneous optical regeneration of four 200 GHz-spaced 40 Gbit/s channels in a single polarisation-insensitive InP Mach-Zehnder modulator is demonstrated by means of a dense WDM loop transmission over 10,000 km, yielding spectral efficiency of 0.27 (bit/s)/Hz.

4 x 40Gbit/s wavelength division multiplexed, dispersion-managed transmission over transoceanic distances with a record spectral efficiency of 0.27 (bit/s)/Hz has been achieved using simultaneous in-line optical regeneration by a channel pair.

An output power of 26dBm has been achieved with a ytterbium-free all-silica double-clad erbium-doped fibre owing to the matching of the wavelengths of multimode pumps with the erbium absorption spectrum.

Validation of a new polarisation-independent InP Mach-Zehnder interferometer providing adjustable phase/intensity optical modulation as a soliton regenerator is made through loop experiments. Error-free 20 Gbit/s transmission over 40,000 km is obtained in push-pull mode to compare with 8,000 km under single-electrode control

We report on a 40 Gb/s photoreceiver made with a 27 dB-gain SOA - 0.9 nm tunable filter module, connected to a 0.78 A/W - 31 dB-gain PIN-GaAs PHEMT module. Overall gain is 0.7 V/mu W, with a 37 GHz bandwidth, a 10.4 pA/root Hz electrical noise and a 7-8 dB noise figure for SOA.

A new polarisation-independent InP Mach-Zehnder interferometer provides adjustable phase/intensity optical modulation under independent 20 GHz electrical control of the electrodes. Validation of the component as a regenerator for soliton systems is made through recirculating loop experiments. Error free transmission at 20 Gbit/s over more than 40000 km is obtained in push-pull mode for comparison with 8000 km under single-electrode control.