The Photonetics OM 3646 HE 15 TLS is a manually-tunable laser source for precision optical testing and measurement applications. It delivers stable, accurate optical signals across the C-band wavelength range with 0.01 nm resolution and mode-hop-free operation. The external cavity design uses a self-aligned configuration with a dihedral rear reflector and Invar construction to eliminate thermal drift without active temperature control.
Technical Specifications
• Wavelength Range: 1530 nm to 1600 nm
• Wavelength Resolution: 0.01 nm typical (option for 1 pm resolution)
• Tuning Mechanism: Manual multi-turn knob with 70 nm adjustment range
• Optical Output Power: 0 dBm standard; +6 dBm (P6) and +10 dBm (P10) options available
• Optical Power Stability: ±0.01 dB
• Fiber Output: SMF-28
• Modulation Input: External intensity modulation, 10 kHz to 1 GHz bandwidth per module
• Laser Cavity: Self-aligned external cavity with 180° folding prism; Invar construction
– Key Features
• Mode-hop-free scanning maintains fixed cavity length during wavelength tuning
• Internal wavelength referencing eliminates need for external wavelength meter
• Automatic power control (APC) with adjustable diode driver
• Front panel control or IEEE-488/RS-232 remote interfaces for wavelength and optical power adjustment
• Analog outputs available for laser diode current on chassis
– Typical Applications
Optical component testing, WDM system characterization, fiber optic sensor development, precision wavelength calibration, and multi-wavelength research requiring stable, drift-free tunable sources.
– Compatibility & Integration
Designed as a modular source compatible with the Photonetics TUNICS-OM chassis. Up to eight modules integrate into a single 19-inch instrument frame for multi-wavelength test systems.

















