User`s guide

Specifications Supplementary Performance Characteristics
42 Agilent 81689A, 81689B and 81649A Tunable Laser Modules User’s Guide, Third Edition
Supplementary Performance
Characteristics
Modulation
Internal Digital Modulation 50% duty cycle, 200 Hz to 300 kHz
> 45% duty cycle, 300 Hz to 1 MHz
Modulation output (via Mainframe):
TTL reference signal.
External Digital Modulation > 45% duty cycle, fall time
< 300 ns, 200 Hz to 1 MHz
Modulation Input (via Mainframe):
TTL signal.
External Analog Modulation ≥ 15% modulation depth, 5 kHz to 1 MHz
Modulation input: 5 Vp-p
Coherence Control
(Agilent 81649A and 81689B)
For measurements on components with 2 m long patchcords and
connectors with 14 dB return loss, the effective linewidth results in a
typical power stability of < ± 0.025 dB over 1 minute by reducing
interference effects in the test setup.
Relative Intensity noise
(RIN, typ.)
< −137 dB/Hz
(100 MHz - 2.5 GHz)
at + 3 dBm
< −137 dB/Hz
(100 MHz - 2.5 GHz)
at + 7 dBm
< −137 dB/Hz
(100 MHz - 2.5 GHz)
at + 3 dBm
Dimensions
75 mm H, 32 mm W, 335 mm D
(2.8” × 1.3” × 13.2”)
75 mm H, 32 mm W, 335 mm D
(2.8” × 1.3” × 13.2”)
75 mm H, 32 mm W, 335 mm D
(2.8” × 1.3” × 13.2”)
Weight
1 kg 1 kg 1 kg
1. At CW operation. Measured with wavelength meter based on wavelength in vacuum.
2. Measured by heterodyning method.
3. 500 ms after changing power.
4. Measured with optical spectrum analyzer at 1 nm resolution bandwidth.
Agilent 81689A Agilent 81689B Agilent 81649A