electro-absorption modulator


Also found in: Acronyms.

electro-absorption modulator

A semiconductor diode that modulates light from a laser that is separate from it, but may be fabricated on the same wafer. Turning the current on causes absorption of the light. See fiber optics glossary.
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In addition, a C-band GeSi electro-absorption modulator was developed with electro-optical bandwidth beyond 50GHz, enabling NRZ modulation at 56Gb/s and beyond.
In other news at OFC, nanoelectronics research center imec, its associated lab at Ghent University (Intec), and Stanford University demonstrated a compact germanium (Ge) waveguide electro-absorption modulator (EAM) with a modulation bandwidth beyond 50 GHz.
The new reflective electro-absorption modulator (R-EAM) offers engineers a low insertion loss, low drive voltage optical modulator suitable for applications such as remote antennas and radio-over-fibre.
Since conventional electro-absorption modulator integrated lasers (EML) or Mach-Zehnder modulators used in long-distance transmission are limited to a distance of around 80 km there has been demand for longer-range capability.
In the externally modulated links, the optical transmitter is based on a laser power source, typically a solid-state laser, such as Nd-YAG followed by a Mach-Zehnder modulator or an electro-absorption modulator.
The nanoelectronics research center imec, its associated lab at Ghent University (Intec), and Stanford University have demonstrated a compact germanium (Ge) waveguide electro-absorption modulator (EAM) with a modulation bandwidth beyond 50 GHz.
7 Gbps electro-absorption modulator (EAM) driver with integrated bias T.
At this week s IEEE International Electron Devices Meeting (IEDM 2014), nanoelectronics research center imec and its associated lab at Ghent University have demonstrated the industry s first integrated graphene optical electro-absorption modulator (EAM) capable of 10Gb/s modulation speed.
Northlight's PGT20456 DFB/EA laser module combines a continuous wave DFB laser with an electro-absorption modulator in a single chip.
Uni-travelling-carrier photodiode (UTC-PD) and PD-EAM optical gate integrating UTC-PD and travelling wave electro-absorption modulator (TW-EAM).
One of the highlights is the demonstration of the first 10Gb/s silicon-integrated graphene electro-absorption modulator for chip-level optical interconnects.
5G and 10G Electro-Absorption Modulator MQW DFB laser diode modules from NEC.

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