The Keysight (Agilent) 81600B is a high-performance Tunable Laser Source (TLS) module designed for the 8164A and 8164B Lightwave Measurement System mainframes. Renowned for its rapid sweep speed, exceptional wavelength accuracy, and excellent spectral purity, it is the industry standard for testing dense wavelength division multiplexing (DWDM) components, optical amplifiers, and silicon photonics devices.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | GPIB, LAN, USB (provided via 8164A/B mainframe) |
| Display | None (uses 8164A/B mainframe display) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | Powered directly by the 8164A/B mainframe slot |
| Operating Temperature | 10 °C to 40 °C |
| Dimensions (W×H×D) | 75 mm × 150 mm × 340 mm |
| Weight | 2.5 kg |
Optical Output Characteristics
| Parameter | Value |
|---|---|
| Wavelength Range (Option 200) | 1440 nm to 1640 nm |
| Wavelength Range (Option 160) | 1450 nm to 1650 nm |
| Wavelength Range (Option 150) | 1490 nm to 1640 nm |
| Wavelength Range (Option 130) | 1260 nm to 1375 nm |
| Peak Output Power (Option 200) | >= +3 dBm |
| Peak Output Power (Option 160) | >= +5 dBm |
| Peak Output Power (Option 150) | >= +5 dBm |
| Peak Output Power (Option 201) | >= +7 dBm |
| Optical Power Repeatability | +/- 0.01 dB (typical) |
| Optical Power Stability (Short-Term) | +/- 0.01 dB (over 1 hour at constant temperature) |
| Optical Power Flatness vs. Wavelength | +/- 0.1 dB (typically) |
| Polarization Extinction Ratio (PER) | >= 18 dB (typically 20 dB) |
| Fiber Type | Panda Polarization Maintaining Fiber (PMF) |
Wavelength Control & Tuning
| Parameter | Value |
|---|---|
| Absolute Wavelength Accuracy | +/- 10 pm (typical +/- 3.6 pm) |
| Wavelength Repeatability | +/- 1 pm (typical +/- 0.5 pm) |
| Relative Wavelength Accuracy | +/- 2 pm (typical +/- 1 pm) |
| Wavelength Resolution | 0.1 pm (12.5 MHz at 1550 nm) |
| Max Continuous Sweep Speed | up to 80 nm/s |
| Mode-Hop-Free Tuning Range | Full wavelength range |
Spectral Purity & Stability
| Parameter | Value |
|---|---|
| Side-Mode Suppression Ratio (SMSR) | >= 45 dB (typically > 50 dB) |
| Signal-to-Source Spontaneous Emission Ratio (Option 200) | >= 70 dB/nm (at peak, typically >= 80 dB/nm) |
| Signal-to-Source Spontaneous Emission Ratio (Option 160) | >= 70 dB/nm |
| Effective Linewidth (FWHM) | < 100 kHz (typically 50 kHz, coherence control off) |
| Coherence Control (Linewidth Broadening) | > 50 MHz (typically, with coherence control enabled) |
| Wavelength Stability (Short-Term) | +/- 1 pm (over 24 hours) |
Power, Physical & Environmental
| Parameter | Value |
|---|---|
| Warm-up Time | 1 hour |
| Specified Accuracy Operating Temperature | 15 °C to 35 °C |
| Storage Temperature Range | -40 °C to +70 °C |
| Relative Humidity Range | < 80% R.H. (non-condensing) |
Compliance & Safety
| Parameter | Value |
|---|---|
| Laser Safety Class | Class 1M (IEC 60825-1) |
Wavelength Specifications
| Parameter | Value |
|---|---|
| Wavelength Range (Option 140) | 1370 nm to 1495 nm |
Optical Outputs
| Parameter | Value |
|---|---|
| Number of Optical Outputs (Option 130 / 140 / 150 / 160) | 1 (Low SSE) |
| Number of Optical Outputs (Option 200 / 201) | 2 (Output 1: High Power, Output 2: Low SSE) |
| Return Loss (with angled connector) | > 60 dB (typical) |
Power Specifications
| Parameter | Value |
|---|---|
| Power Linearity | ±0.05 dB |
Modulation
| Parameter | Value |
|---|---|
| Internal Modulation | 200 Hz to 200 kHz (square wave, 50% duty cycle) |
| External Analog Modulation | External Digital Modulation = 300 Hz to 1 MHz |
Wavelength Specs
| Parameter | Value |
|---|---|
| Wavelength Range (Option 201) | 1455 nm to 1640 nm |
| Wavelength Tuning Time (Typical) | 250 ms (1 nm step), 400 ms (10 nm step), 800 ms (100 nm step) |
Power Specs
| Parameter | Value |
|---|---|
| Peak Output Power (Option 130) | ≥ +5 dBm |
| Peak Output Power (Option 140) | ≥ +5 dBm |
| Absolute Power Accuracy | ±0.15 dB |
| Power Stability (Long-Term) | ±0.03 dB (24 h) |
Spectral Purity Specs
| Parameter | Value |
|---|---|
| Signal-to-Source Spontaneous Emission Ratio (Option 130) | ≥ 70 dB/nm (typ. ≥ 75 dB/nm) |
| Signal-to-Source Spontaneous Emission Ratio (Option 140) | ≥ 70 dB/nm (typ. ≥ 75 dB/nm) |
| Signal-to-Source Spontaneous Emission Ratio (Option 150) | ≥ 70 dB/nm (typ. ≥ 75 dB/nm) |
| Signal-to-Source Spontaneous Emission Ratio (Option 201) | ≥ 80 dB/nm (Low SSE port), ≥ 55 dB/nm (High Power port) |
| Relative Intensity Noise (RIN) | < -145 dB/Hz (typical, at 10 MHz to 1 GHz, at peak power) |
Technology
Tunable External Cavity Diode Laser (ECDL)
Applications
DWDM component testing, optical amplifier characterization, and silicon photonics testing