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Wavelength tuning
C band
Operating wavelength range: 1527.605 nm – 1568.772 nm
Operating frequency range: 191.100 THz – 196.250 THz
L band
Operating wavelength range: 1568.772 nm – 1611.787 nm
Operating frequency range: 186.000 THz – 191.100 THz
Laser type: Thermally tuned external cavity diode laser (ECDL)
Frequency tuning resolution (wavelength) : 100 MHz (1 pm)
Tuning time: < 30 s
Spectral characteristics
Linewidth (FWHM), instantaneous : < 100 kHz
Side-mode suppression ratio: 40 dB (55 dB typical)
Frequency uncertainty (wavelength): ± 2.5 GHz (± 22 pm) b, c
Frequency stability (wavelength): ± 0.3 GHz (± 3 pm) b over 24 hours
Optical power
Maximum optical output power: S: ≥ 12.5 dBm; H: ≥ 14.5 dBm (C-band only)
Minimum optical output power: S: ≤ 8 dBm; H: ≤ 11 dBm (C-band only)
Optical power uncertainty after calibration : ± 0.6 dB
Power stability: ± 0.1 dB over 24 hours (2 σ)
Output power tuning resolution :0.01 dB
Power flatness, peak-to-peak: 0.5 dB over entire wavelength range
Fiber type: Polarization maintaining fiber (PMF)
Polarization extinction ratio (PER): > 18 dB at the polarization maintained fiber output
Relative intensity noise RIN (for 13 dBm): –140 dB/Hz (10 MHz – 40 GHz)
Power monitoring: Built-in
GENERAL SPECIFICATIONS
Size (H x W x D) : 25 mm X 159 mm X 187 mm (1 in x 6 1/4 in x 7 5/16 in)
Weight : 0.5 kg (1.1 lb)
Temperature
Operating: 0 °C to 40 °C (32 °F to 104 °F)
Storage: –40 °C to 70 °C (–40 °F to 158 °F)
Relative humidity: 0 % to 80 % non-condensing
LTB-2/LTB-8/LTB-12 operation: FTBx-2850 modules are launched and operated from ToolBox.
EXFO Connect and Multilink will not recognize or operate FTBx-2850 module.
Remote control and automation: Ethernet: SCPI commands or Web UI
