Neophotonics plans release of coherent-mixer

Coherent mixers enable ultra high-rate optical transmission by revealing additional information about the amplitude and phase of the received optical signal over traditional intensity-level receivers, allowing transmission of multiple bits in each optical data pulse.

The coherent mixer product provides advanced demodulation to analyse the state-of-polarisation and optical phase of a phase-modulated signal relative to an externally supplied optical reference, enabling recovery of the phase-polarisation constellation for Dual Polarization Quadrature Phase Shift Keyed (DP-QPSK) data transmission.

The Neophotonics coherent mixer requires no power, operates across the C or L band and is based on planar integration, utilising high-volume semiconductor production methodologies.

Neophotonics has introduced its demodulator for Differential Quadrature Phase Shift Key (DQPSK) data transmission.

The demodulator consists of two PIC integrated Delay Line Interferometers (DLIs), providing in-phase and quadrature analysis of differentially phase-encoded signals.

To accommodate the unpredictable and varying nature of the received signal polarisation, Neophotonics' DQPSK demodulator has been optimised such that the performance exhibits extremely low sensitivity to polarisation variations.

Neophotonics will exhibit at ECOC the new products described above as well as the industry's most complete portfolio of MEMS and PIC (photonic integrated circuit) based optical components and broad line of telecom transceiver products in SFF, SFP and XFP form factors.

Dr Tony Ticknor, director of research and development at Neophotonics, will provide a presentation on 'PLC-based Hybrid Integration Devices' in a workshop entitled 'Monolithic and Hybrid Photonic Integrated Transceivers for Advanced Modulation Formats' at ECOC on 20 September.