To: pass pass who wrote (773 ) 1/27/2000 3:12:00 PM From: Lee Respond to
pass pass,..Re:. So can you use it as laser source so that the signal will travel further with few repeaters/amplifiers in the path? spectra-physics.com The Spectra-Physics Millennia® s Series and the industrial Millennia i Series are the next generation in cw 532 nm, high power, diode-pumped solid state laser technology. sdli.com For transmission in the 1550-nm range, Raman amplification occurs when the transmission fiber is pumped with very high optical power at approximately 1455 nm. Therefore, by using a high-powered pump source at the receive terminal (in excess of 1 W), the transmission fiber itself will provide gain in the 1550-nm window. Additional gain of up to 15 dB, equivalent to approximately 100 km extra distance, can be realized. This technique is referred to as "distributed Raman amplification" due to the fact that unlike a conventional EDFA, where amplification occurs in a single discrete amplifier module, the gain is spread out, or distributed, over a significant fraction of the transmission wavelength. itfoptical.com To meet the need for high power Raman optical amplification systems, ITF is offering a Raman Pump Combiner™, the RPC-100, based on our exclusive All-Fiber technology. The RPC-100 allows up to 8 pump channels to be combined for multiple-wavelength amplification. ITF's Raman RPC-100 can accommodate pump power in excess of 10W and can be customized for specific channel spacings in the Raman wavelength windows, around 1450 nm for distributed amplification or around 1480 nm for remote amplification.
