www.agilent.com/comms/lightwave
Source Modules
Agilent 81662A and 81663A DFB Laser Modules (cont.)
Specifications
Specifications describe the instruments’ warranted performance. Supplementary performance characteristics provide information about non-warranted instrument performance in the form of
nominal value, and are printed in italic. Typical specifications are printed in bold.
81662A
1
81663A
1
Type CW DFB laser with built-in isolator CW DFB laser with built-in isolator
Wavelength
2
ITU Grid (100 GHz) ITU Grid (100 GHz)
Tuning Range typ. >±500 pm typ. >±850 pm
Display Resolution 10 pm 10 pm
Repeatability
3
±3 pm (±1 pm) ±5 pm (±2 pm)
Stability (15 minutes)
3,4
±3 pm (±1 pm) ±5 pm (±2 pm)
Stability (24 hours)
3,4
±5 pm ±5 pm
Fiber Type Panda PMF 9/125 µm Panda PMF 9/125 µm
Output Connector
5
Compatible to angled contact APC, ASC, DIN47256/4108 Compatible to angled contact APC, ASC, DIN47256/4108
Power Maximum Output
6,7
typ. >+10 dBm (10 mW) typ. >+13 dBm (20 mW)
CW Stability (15 minutes)
3
typ. ±0.005 dB typ. ±0.003 dB
CW Stability (24 hours)
3,4
typ. ±0.03 dB t yp. ±0.01 dB
Side Mode Suppression Ratio (SMSR)
7
typ. 45 dB typ. 50 dB
Polarization Extinction Ratio (PER) typ. >20 dB typ. >20 dB
Dimensions 75 mm H x 32 mm W x 335 mm D (2.8 in x 1.3 in x 13.2 in)
Weight 0.5 kg
Recalibration Period 1 year
Operating Temperature 15ºC to 35ºC
Warm-up Time
4
60 minutes
Laser Classification FDA Laser Class IIIb according to 21 CFR 1040.10
IEC Laser Class 3A according to IEC 60825-1
Supplementary Performance Characteristics • Internal digital modulation mode: free selection 200 Hz to 100 kHz. All output signals are pulse shaped, duty cycle 50%
• Internal coherence control for linewidth broadening
• ON-switching with fast output power stabilization <20 s
• Output power “attenuation” at default wavelength 6 dB in steps of 0.1 dB
• Tuning speed over full range 30 s
• Polarization maintaining fiber orientation: TE mode in slow axis, in line with connector key
1
ITU-grid wavelength is shown on display as the default.
2
Via GPIB tuning resolution <10 pm.
3
If previously stored at the same temperature, 20 minutes.
4
Controlled environment T = ±1ºC.
5
At maximum power setting and default wavelength at the end of a 2 m SM patchcord.
6
Connector interface not included.
7
Valid for serial numbers starting with prefix DE417 and above.
Ordering information
Agilent DFB sources are available in the ITU Grid from 1529.55 nm (196THz) to 1610.06 nm (186.2 THZ) with 100 GHz spacing.
For detailed order information and special wavelengths please contact your AgilentTechnologies sales representative or visit our website: www.agilent.com
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