Transceiver operates across 160km links

An extended-reach 10Gbit/s XFP transceiver operates across 160km links without dispersion compensation.

NEC has demonstrated an extended reach 10Gbit/s XFP transceiver for 160km links without dispersion compensation.

This transceiver exploits NEC's Planar Lightwave Circuit (PLC) technologies with AZNA's extended reach Chirp Managed Laser (CML) technology for a potentially low-cost, compact transmitter optical subassembly (TOSA).

This transceiver addresses the demand for high-density pluggable optics and eliminates the need for dispersion compensation in 2.5 to 10Gbit/s upgrades.

Optical transmitter modules are optical devices used in optical interfaces of equipment such as large-capacity optical communications systems and high-speed router switches.

As conventional electro-absorption modulator integrated lasers (EML) or Mach-Zehnder modulators used in long-distance transmission are limited to a distance of around 80km there has been demand for longer-range capability.

In a joint effort the two companies have demonstrated a compact PLC-based CML TOSA, which allows further miniaturisation of AZNA's CML transmitters.

The Chirp Managed Laser (CML) uses a standard DFB laser and a passive optical spectrum reshaper (OSR) filter to achieve extended reach.

NEC has developed a PLC-based OSR which can replace the current bulk version of the OSR used in AZNA products.

The PLC based CML reduces parts count and allows passive optical alignment, which allows mass production leading to a lower cost.

Back to top