The Photonetics Plus 3642HE CL TLS is a tunable external cavity laser source engineered for precision optical testing and measurement in fiber optic networks. It delivers mode-hop-free operation across a continuous tuning range with active wavelength control, adjustable scan speeds, and high spectral purity. The instrument combines wide spectral coverage, fast tunability, and stable output power—making it suitable for DWDM system characterization, optical component testing, and network diagnostics.
Technical Specifications
Wavelength Range: 1525 nm to 1625 nm
Wavelength Accuracy: ±0.04 nm absolute
Wavelength Repeatability: ±0.005 nm
Output Power: 0 dBm
Power Stability: ±0.01 dB/h
Power Flatness (scan): ±0.25 dB
Scan Speed: 1 to 100 nm/s (adjustable); 1 second per 100 nm
Side Mode Suppression Ratio: >40 dB
Spectral Resolution: 1 pm
Spontaneous Emission: -145 dB/Hz (0.1 nm bandwidth, ±1 nm offset)
Weight: Approximately 12.5 kg
– Key Features
• Mode-hop-free operation via active control across full tuning range
• Wide, fast, and continuous wavelength tunability
• Internal wavelength referencing with external meter integration capability
• RS-232 and GPIB remote control interfaces
• High spectral purity and low spontaneous emission
– Typical Applications
• DWDM system testing and channel characterization
• Optical component evaluation and performance validation
• Fiber optic network diagnostics
• Precision wavelength-dependent measurements
– Compatibility & Integration
The 3642HE CL is part of the legacy Photonetics Tunics Plus series, originally developed by Photonetics S.A. (acquired by GN NetTest in 2000). Third-party service providers offer repair and calibration support for this discontinued equipment line.


















