Core Sm Erbium/Ytterbium Doped Fiber (DF1500 Y) is a single mode (samarium) erbium (erbium) and ytterbium (Yb) doped fiber that provides extremely high levels of pump absorption and emission around the telecom C and L band windows . The fiber can be used in low-power fiber lasers, preamplifiers, and amplified spontaneous emission (ASE) light sources. High absorption is ideal for applications requiring short gain lengths, such as femtosecond mode-locked ring lasers.

The mixture of erbium and ytterbium extends the 915nm pump absorption band to 980nm, and the absorption is relatively flat until the 980nm peak. This allows the use of a low-cost, unstable 940nm pump, where the change in wavelength of the pump light with temperature has a much smaller effect on the output power than when pumping at 980nm.

Advantage:

1. Very high pump absorption rate for short-length amplifiers

2. Relatively flat pump absorption region around 94nm, allowing the use of low-cost unstable pump diodes

3. Applicable to pre-amps before CP1500

1. Telecom

2. Erbium-Doped Fiber Amplifier (EDFA)

3. Cable TV (cable TV)

4. Fiber Laser