The Santac OTF-920 is a programmable optical tunable bandpass filter that delivers precise wavelength selection and signal filtering across the C-band telecommunications window. Built on multilayer dielectric interference filters and Santec’s patented linear sliding tuning method, it maintains stable bandwidth, insertion loss, and polarization dependent loss across its entire tuning range. The dual-slider configuration enables independent control of two optical channels, supporting continuous 80 nm tuning, split-band operation, or combined wavelength and power management through integrated variable attenuators.
Technical Specifications
• Tuning Range: Slider 1: 1530–1570 nm | Slider 2: 1570–1610 nm | Combined: up to 80 nm
• Wavelength Resolution: 0.01 nm
• Wavelength Accuracy: ±0.1 nm max
• Wavelength Repeatability: ±0.05 nm max
• –3 dB Bandwidth: 0.7 ± 0.1 nm or 0.95 ± 0.1 nm (typical)
• –20 dB Bandwidth: <7.5 nm or <9.8 nm (typical)
• Insertion Loss: <3.5 dB max
• Polarization Dependent Loss: <0.1 dB (SMF)
• Polarization Mode Dispersion: 45 dB
• Maximum Input Power: +20 dBm
• Filter Type: Multilayer dielectric interference
• Tuning Method: Patented linear sliding technology
– Key Features
• Dual independently tunable sliders accommodate bandpass filters or variable attenuators
• Configurable bandwidth control via spectral response summation (example: 2.0 nm typical with dual 1.2 nm filters at 0.8 nm spacing)
• Wavelength-independent optical properties maintain consistent performance across tuning range
• Peak search function enables automatic signal optimization
• Automatic Power Control (APC) mode maintains constant output level
• Remote control via GPIB and RS-232C interfaces
– Typical Applications
• Optical communications and wavelength-selective signal processing
• Optical spectrum analysis and filter characterization
• Fiber optic sensing systems requiring tunable bandpass filtering
– Compatibility & Integration
• Communication Interfaces: GPIB, RS-232C
• Optical Connector: FC/SPC (front)
• Weight: 15 lbs (approximate)
