Jump-up of high speed long reach (25-40 Gb/s) Access networks and Services using Monolithic Integration of traNsceivers – JASMIN

High speed photodetectors monolithically integrated with semiconductor optical amplifiers (SOA) are key components for next generation broadband access networks because their internal gain considerably improves the photoreceiver sensitivity. Taken separately, buried heterostructure SOA and uni-traveling carrier (UTC) photodiodes have demonstrated so far the best noise/speed performances as required for future generation of photoreceivers in fibre optic telecommunication applications. To date, avalanche photodiodes were used to achieve photoreceivers with high signal to noise ratio as needed in access networks. However, their limited gain bandwidth product requires new solutions to be considered.

JASMIN ambition is aiming at developing innovative engineered monolithically integrated SOA/UTC components to exploit their high performance characteristics and achieve much beyond state of the art photoreceivers. JASMIN objectives are to push the limits of the new SOA/UTCs in two directions: speed/sensitivity and TE/TM light polarization independence.

For 25Gb/s access applications, 1.55µm SOA/UTC will be developed exhibiting very low (<1dB) PDL (polarization dependence loss) and high sensitivity.
A very challenging 1.55µm SOA/UTC will then be optimized for 40Gb/s applications with a record gain bandwidth product of 3THz. Un-cooled operation will be assessed for subscriber terminals.
A 1.3µm DFB laser will be combined with 1.55 µm SOA/UTC into an innovative bi-directional full duplex transceiver for low cost access applications.

In JASMIN, the SOA/UTC characteristics will be thoroughly assessed, and their suitability will be investigated for 25Gb/s and 40Gb/s large-scale access applications.
For such applications, the impact of improved photoreceiver performances will be demonstrated in terms of increased performances and bandwidth, extended network performance, power budget or splitting factor.