The Photonetics Tunics-BT 3648HE 1560 with Opt. C is a tunable external cavity laser engineered for precision spectroscopy, telecommunications, and optical research. Operating across the C-band with selectable wavelength ranges, this instrument delivers narrow linewidth output, exceptional wavelength stability, and coherence control via Option C for demanding metrology and signal processing applications.
Technical Specifications
Wavelength Performance
• Tuning range: 1520–1600 nm (standard); configurable ranges include 1480–1560 nm, 1520–1600 nm, or 1560–1640 nm at 0 dBm output
• Accuracy: ±0.2 nm
• Stability: ±0.01 nm/hour and ±0.01 nm/24 hours (typical, after warm-up at constant temperature)
• Setting resolution: 0.01 nm standard; optional 0.001 nm (1 pm) available
• Tuning repeatability: ±0.01 nm (typical)
• Tuning speed: 10 nm/s (standard); 3 nm/s with 1 pm resolution option
Spectral Characteristics
• Linewidth (FWHM): 150 kHz typical with coherence control OFF; below 100 kHz integrated linewidth achievable
• Side mode suppression ratio: >45 dB typical
• Relative intensity noise: >145 dB/Hz (typical)
Power and Stability
• Output power: 0 dBm standard; ±6 dBm and +10 dBm options available
• Power stability: ±0.01 dB/hour and ±0.01 dB/24 hours (typical, after warm-up at constant temperature)
Output and Interfaces
• Connector: FC/APC
• Output isolation: 35 dB
• Return loss: 60 dB
• Communication: GPIB and RS-232 for remote control and automation
Modulation
• TTL modulation: 100 Hz to 500 kHz (internal or external)
• External modulation bandwidth: 10 kHz to 1 GHz
– Key Features
• Option C provides coherence control and fine-tuning enhancement for improved wavelength precision
• Full internal and external modulation capability for dynamic signal generation
• SMF-28 fiber compatibility with standard FC/APC output
• Optional polarization-maintaining fiber output (Option M)
• Auto-select power supply: 100–240 V AC, 50–60 Hz
– Typical Applications
Telecommunications testing, optical coherence tomography, wavelength-dependent measurements, and high-resolution spectroscopy requiring narrow linewidth and drift-free operation.
– Compatibility & Integration
Supports SMF-28 single-mode fiber. Operating temperature range: +15 to +30 °C. GPIB and RS-232 interfaces enable integration into automated test systems and remote laboratory configurations.
