www.agilent.com/comms/lightwave
Source Modules
Agilent 8198xA and 8194xA Compact Tunable Laser Source (cont.)
81980A and 81989A Compact Tunable Laser Source, 1465 nm – 1575 nm
81940A and 81949A Compact Tunable Laser Source, 1520 nm – 1630 nm
Agilent 81980A, 81940A Agilent 81989A, 81949A
Wavelength Range 1465 nm to 1575 nm (81980A and 81989A)
1520 nm to 1630 nm (81940A and 81949A)
Wavelength Resolution 1 pm, 125 MHz at 1550 nm 5 pm, 625 MHz at 1550 nm
Mode-hop Free Tuning Range Full wavelength range
Maximum Tuning Speed 50 nm/s
Absolute Wavelength Accuracy ±20 pm ±100 pm
Relative Wavelength Accuracy ±10 pm, typ. ±5 pm ±50 pm
Wavelength Repeatability ±2.5 pm, typ. ±1 pm ±5 pm
Wavelength Stability (typ., over 24 h)
3
±2.5 pm ±5 pm
Linewidth (typ.), Coherence Control Off 100 kHz
Effective Linewidth (typ.), >50 MHz for 1525 nm – 1575 nm (81980A and 81989A)
Coherence Control On1 >50 MHz for 1570 nm – 1620 nm (81940A and 81949A)
Maximum Output Power +10 dBm
(Continuous Power During Tuning) ≥+13 dBm for 1525 nm – 1575 nm (81980A and 81989A)
≥+13 dBm for 1570 nm – 1620 nm (81940A and 81949A)
Minimum Output Power +6 dBm
Power Linearity (typ.) ±0.1 dB
Power Stability
3
±0.01 dB over 1 hour
typ. ±0.0075 dB over 1 hour
typ. ±0.03 dB over 24 hours
Power Flatness Versus Wavelength ±0.3 dB, typ. ±0.15 dB
Power Repeatability (typ.) ±10 mdB
Side-mode Suppression Ratio (typ.)
1
≥45 dB
Signal to Source Spontaneous ≥45 dB
Emission Ratio
2
48 dB/nm for 1525 nm – 1575 nm (81980A and 81989A)
48 dB/nm for 1570 nm – 1620 nm (81940A and 81949A)
Signal to Total Source ≥25 dB
Spontaneous Emission Ratio (typ.)
1
≥30 dB for 1525 nm – 1575 nm (81980A and 81989A)
≥30 dB for 1570 nm – 1620 nm (81940A and 81949A)
Relative Intensity Noise (RIN) (typ.)
1
–145 dB/Hz
Dimensions (H x W x D) 75 mm x 32 mm x 335 mm
1
At maximum output power as specified per wavelength range.
2
Value for 1 nm resolution bandwidth.
3
At constant temperature ±0.5 K.
Ordering information
8163B or 8164B or 8166B Light wave Measurement System (mainframe)
81980A Compact Tunable Laser Source 1465 – 1575 nm, step and sweep mode
81989A Compact Tunable Laser Source 1465 – 1575 nm, step mode only
81940A Compact Tunable Laser Source 1520 – 1630 nm, step and sweep mode
81949A Compact Tunable Laser Source 1520 – 1630 nm, step mode only
* All tunable lasers must be ordered with one connector option.
# 071 for PMF, straight output
# 072 for PMF, angled output
* One Agilent 81000xI-series connector interface is required
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