Anaelle Maho

C- and O-band operation of RSOA WDM PON self-seeded transmitters up to 10 Gb/s [Invited]

We propose a network-embedded colorless self-tuning transmitter for wavelength division multiplexed (WDM) networks based on self-seeding in reflective semiconductor optical amplifiers (RSOAs). We compare up to a 10-Gb/s data rate in either O-band or C-band operation. In particular, the transmitter exploits a two-Faraday rotator configuration to ensure polarization-insensitive operation and allowing for the exploitation of high-gain C- and O-band RSOAs, which present a very high polarization-dependent gain. Two different multiplexers and various lengths of drop fibers constituted the network-embedded transmitters in order to evaluate various dispersion load influence on cavity buildup. Moreover, transmission over standard single-mode feeder fiber has been evaluated both at 2.5 and 10 Gb/s to compare the performance in both bands, confirming the absence of chromatic dispersion penalties for the O-band operation.

10-Gb/s Operation of a Colorless Self-Seeded Transmitter Over More Than 70 km of SSMF

Operation of a network-embedded colorless self-tuning transmitter for wavelength division multiplexing (WDM) networks is experimentally demonstrated at 10-Gb/s data rate. Colorless operation is achieved by self-seeding an O-band reflective semiconductor optical amplifier (RSOA) with the feedback signal reflected at the remote node WDM multiplexer filter. In particular, the transmitter exploits a 2-Faraday rotators configuration to ensure polarization insensitive operation and allowing for the exploitation of high gain O-band RSOAs, which present a very high polarization dependent gain. Two different multiplexers and various lengths of drop fibers constituted the network-embedded transmitters. Transmission up to 72 km of standard single mode fiber has been demonstrated at 10 Gb/s, confirming the absence of chromatic dispersion penalties as expected from the choice of the O-band operation.

Self-seeded RSOAs WDM PON field trial for business and mobile fronthaul applications

GEth, CPRI and 10 Gbit/s transmissions are experimented using amplified and standard self-seeded RSOA WDM PON systems. A field trial setup was exploited to test the system performance in terms of reach and optical budget.

Operation of a RSOA WDM PON Self-seeded Transmitter Over More than 50 km of SSMF up to 10 Gb/s

For the first time we present operation of a WDM PON self-seeded transmitter in the O-band achieving more than 50-km SSMF transmission up to 10 Gb/s over 8 channels.

10-Gb/s amplified self-seeding WDM PON transmission exploiting RSOAs

We present an experimental analysis of a self-tuning colorless ONU transmitter based on amplified self-seeded RSOAs to be exploited in WDM PON fiber networks for fronthaul. The architecture is polarization independent thanks to the exploitation of high and low PDG RSOAs and Faraday rotators. The transmission over different lengths of fiber displaying various dispersive loads is demonstrated at 10 Gb/s evidencing the chromatic dispersion impact on performance.

Demystification of self-seeded WDM access

The operating principles of a self-seeded cavity are explained, and its main characteristics are described. Some practical implementation cases are also discussed.

125-km Long Cavity Based on Self-Seeded RSOAs Colorless Sources for 2.5-Gb/s DWDM Networks

The laser behavior of reflective semiconductor optical amplifier self-seeded sources is investigated. 2.5-Gb/s transmission is realized with optical cavities of 10, 26, 100, and 125 km for access and metropolitan networks, realizing the longest amplified self-seeded external cavity laser. Moreover, Gigabit Ethernet, common public radio interface, and 2.5-Gb/s transmissions are experimented using amplified self-seeded reflective semiconductor optical amplifier wavelength division multiplexing passive optical networks systems. A field trial setup is exploited to test the system performance in terms of reach and optical budget.

Experimental evaluation of burst-mode operation of a RSOA-based self-seeded transmitter

We experimentally evaluate burst-mode operation of an RSOA-based self-seeded transmitter at 2.5 Gb/s by recognizing, during the cavity build-up, different evolution of the optical power, which reaches steady-state faster than the spectrum. BER curves explore both initial and full-regime roundtrips.

Dual hybrid silicon-photonic laser with fast wavelength tuning

We designed and fabricated a fast-wavelength-tunable hybrid laser diode using two selectable silicon photonic Vernier ring-based cavities. Single mode operation (SMSR > 30 dB) over more than 35 nm and switching speed of 35 ns are demonstrated.

First demonstration and field trial on multi-user UDWDM-PON full duplex PSK-PSK with single monolithic integrated dual-output-DFB-SOA based ONUs

We demonstrate a monolithically integrated dual-output DFB-SOA, and conduct the field trial on a multi-user bidirectional coherent ultradense wavelength division multiplexing-passive optical network (UDWDM-PON). To the best of our knowledge, this is the first achievement of simplified single integrated laser-based neighboring coherent optical network units (ONUs) with a 12.5 GHz channel spaced ultra-dense access network, including both downstream and upstream, taking the benefits of low footprint and low-temperature dependence.