The Newport/New Focus 2103 is a high-dynamic-range optical power sensor engineered for precision measurement across broad power variations without manual gain adjustment. Built around a 1 mm InGaAs PIN photodiode with an AR-coated fusion bonded borosilicate window, the 2103 delivers >65 dB dynamic range at full speed with logarithmic analog output spanning 70 dB. This enables measurement across six orders of magnitude in a single signal trace.
Technical Specifications
• Wavelength Range: 950–1630 nm
• Detector: 1 mm InGaAs PIN photodiode
• Window: Fusion bonded borosilicate glass, AR coated (optimized 1550 nm)
• Dynamic Range: >65 dB at full speed; logarithmic output spans 70 dB
• Bandwidth (3 dB): User-selectable: 1 kHz, 5 kHz, 25 kHz
• Response Time: 30 µs rise time (0–100%, 25 kHz setting); analog bandwidth >25 kHz
• Maximum Input Power: 4 dBm
• Output Voltage Range: −0.2 V to +3.75 V typical (−74 dBm to +5 dBm; 40 pW to 2.5 mW)
• Conversion Gain: 50 mV/dB
• Resolution: <0.01 dB (single 14-bit A-to-D conversion)
• Repeatability: 0.01 dB
• Optical Return Loss: −50 dB maximum
• Temperature Stabilized: Yes, for measurement stability
• Calibration: Provided for 1520–1620 nm with wavelength-response correction; functions as relative sensor outside this band
• Power Supply: ±15 V, 75 mA
• Output Impedance: <1 Ω typical
• Connector: FC (accepts FC/PC and FC/APC)
– Key Features
• Automatic gain switching eliminates manual range selection
• Logarithmic output for direct measurement of high-dynamic signals
• 30 µs response time supports fast transient capture
• Modular bolt-together design for multi-unit configurations
• Daisy-chained power connections for multichannel systems
• Accuracy maintained within 0.4 V to 3.7 V output range (−62 dBm to +4 dBm)
– Typical Applications
• Swept-wavelength system integration with tunable laser sources
• Multichannel bench-top and rack-mounted measurement setups
• High-resolution relative power monitoring beyond 1620 nm
– Compatibility & Integration
Designed for integration with data acquisition cards and tunable laser systems such as the Newport TLB-6600.
