The EXFO CT400 Optical Component Tester characterizes passive optical components and modules with high-speed precision across the C, L, and S bands. Built for Photonic Integrated Circuit testing, Wavelength Selective Switch analysis, and optical filter characterization, the CT400 delivers fast transfer function measurements with a 65 dB dynamic range in a single sweep. The instrument integrates up to four tunable lasers with automatic switching for continuous full-band coverage, eliminating external switching requirements. Wavelength resolution reaches 1 pm with ±5 pm accuracy, while measurement times for insertion loss approach 1 second. Four internal detectors support heterodyne detection and real-time multi-channel measurements. The CT400 interfaces with standard tunable laser sources, offers PC and GPIB remote control, and operates in a compact form factor suited to laboratory and production environments.
## Technical Specifications
• **Wavelength Range (SMF):** 1240 nm to 1680 nm
• **Wavelength Range (PM13):** 1260 nm to 1360 nm
• **Wavelength Range (PM15):** 1440 nm to 1640 nm
• **Wavelength Resolution:** 1 pm to 250 pm
• **Wavelength Accuracy:** ±5 pm
• **Dynamic Range:** 65 dB (single sweep)
• **Insertion Loss Measurement Time:** Approximately 1 second
• **Laser Integration:** Up to four tunable lasers (SMF model)
• **Detector Configuration:** Four internal detectors, expandable with synchronization
## Key Features
• Fast transfer function measurement for passive component characterization
• Polarization Dependent Loss (PDL) measurement option
• Polarization Mode Dispersion (PMD) measurement capability
• Return Loss (RL) measurement support
• Heterodyne detection of laser lines (SMF type)
• Automatic laser switching across multiple tunable sources
• Real-time measurement via high-speed electronics and optical interferometry
• User referencing for calibrated measurements
## Typical Applications
• Photonic Integrated Circuit (PIC) testing
• Wavelength Selective Switch characterization
• Optical filter performance validation
• Passive component insertion loss and return loss analysis
## Compatibility & Integration
• Tunable Laser Source (TLS) compatibility with standard sources
• PC interface for control and data acquisition
• GPIB remote operation support
• Trigger generation from TLS sweep
