Electronics Engineering Herald                  ADVT
Home | News | New Products | India Specific | Design Guide | Sourcing database | Student Section | About us | Contact us | What's New
Processor / MCU / DSP
Memory
Analog
Logic and Interface
PLD / FPGA
Power-supply and Industrial ICs
Automotive ICs
Cellphone ICs
Consumer ICs
Computer ICs
Communication ICs (Data & Analog)
RF / Microwave
Subsystems / Boards
Reference Design
Software / Development kits
Test and Measurement
Discrete
Opto
Passives
Interconnect
Sensors
Batteries
Others

New Products

  Date: 25/03/2013

Silicon laser generates four wavelengths of light with spacing of 120.5 nm

Fujitsu Laboratories has developed four-wavelength integrated silicon laser for optical transceivers that use silicon photonics for data communications between processors.

Fujitsu explains "One effective way to increase the capacity of data transfers is to carry multiple signals, each at a different wavelength, over the same optical fiber (multiplexing). Typically, in silicon photonics there would be different sized ring resonators(3) to generate optical signals for each wavelength. However, maintaining precise spacing between each wavelength is problematic due to variations in manufacturing processes as well as temperature fluctuations. Also, high-power signals are needed to compensate for losses that occur when multiplexing and demultiplexing signals. Fujitsu Laboratories has succeeded in making use of the periodic transparency of ring resonators to generate wide and uniform wavelength spacing of laser light. Also, mounting technologies that precisely connect multiple silicon wave guides and optical amplifiers on the silicon reduce connection loss between wave guides and achieves a higher power output. The resulting integrated silicon laser has been proven to generate four wavelengths consistently with a wide spacing of 120.5 nm and high output of +5 dBm."

The integrated silicon laser generates four consistent wavelengths with a wide spacing of 120.5 nm, and high power output of +5 dBm.

For more details visit: fujitsu.com



 
ADVT
Home | News | New Products | India Specific | Design Guide | Sourcing database | Student Section | About us | Contact us | What's New
©2010 Electronics Engineering Herald