81657A, Dual Fabry-Perot Laser Source, 1310nm & 1550nm, >13dBm (20mW), Thorlabs

Center wavelength: 1310/1550 nm ± 15 nm;
Fiber type: Standard single-mode 9/125 μm;
Spectral bandwidth (rms): < 5.5nm/7.5 nm;
Output power: > +13 dBm (20 mW);
CW power stability - Short term (15 minutes): < ± 0.005 dB Typical < ±0.003 dB with coherence control active;
Long term (24 hours): Typical ± 0.03 dB;
To back reflection (RL ≥ 14 dB): Typical ± 0.003 dB;
Dimensions: 75 mm x 32 mm x 335 mm (2.8” x 1.3” x 13.2”);
Weight: 0.5 kg;
Recalibration period: 2 years;
Operating temperature: 0 ºC to 45 ºC;
Humidity: Non-condensing;
Warm-up time: 60 minutes.