PICIR Fiber Optic Circulators

Wavelength Range 1.0-5.0 µm MWIR; Detector Size 1x1, 2x2 mm; Time Constant <2 µs; Responsivity 9x103, 4.5x103 V/W; Element Resistance 0.1-2.0 MΩ New Infrared Technologies’ (NIT) LEPTON Series of single-pixel VPD PbSe MWIR detectors are available uncooled as well as with integrated TECs (thermoelectric cooling elements), with different geometries, packaging solutions and preamplifier boards. LEPTON Series single-pixel detectors come in two standard sizes: 1 mm × 1 mm or 2 mm × 2 mm. LEPTON Series uncooled single-pixel PbSe MWIR detectors can be ordered packaged in SMD or TO-5 housings (with cap, hermetic) with sapphire window. These detectors are operational at room temperature and don’t require any cooling devices. LEPTON Series cooled single-pixel PbSe MWIR detectors are hermetically packaged in a TO-8 can housing with cap and sapphire window and include one or two thermoelectric cooler (TEC) stages for higher sensitivity as well as a thermistor. A calibration curve for the thermistor is available. NIT’s LEPTON Series also includes two low-noise preamplifier boards that are 5-V-powered via mini-USB connector: The LEPTON ANALOG PREAMP provides rotary switches to manually select the detector biasing voltage (4 steps from 1.25 V to 10 V) as well as the transimpedance gain (4 steps from 104 to 107 V/A). This preamp outputs a ±10 V analog voltage on a BNC connector. The LEPTON PREAMP WITH USB OUTPUT allows to digitally select the values for detector biasing voltage and transimpedance gain via software. Here, the output is a digital 14 Bit signal with a maximum sampling rate of 20 ksps. This preamp also features an analog output for the preamplifier stage on SMB or BNC connector. For more pixels, linear and two-dimensional array MWIR cameras are available from New Infrared Technologies – please refer to the LUXELL series of linear array MWIR cameras and TACHYON series of high-speed imaging MWIR cameras respectively. Key Features: Detector Sensing Material: VPD Polycrystalline PbSe Uncooled and TEC-cooled (1-stage, 2-stages) Versions Available Square Pixels, Available Pixel Geometries: 1 x 1 mm, 2 x 2 mm Packaging: SMD (10x10 mm) Non-hermetic, TO-5 (9.14 mm Dia.) Hermetic With Cap, TO-8 (15.24 mm Dia.) Hermetic With Cap Sapphire Window IR Detection Band: MWIR, 1.0 µm to 5.0 µm Peak Wavelength of Detection: 3.7 µm D* (λpeak) Uncooled: 2x109 Jones Typical D* (λpeak, 1,000 Hz, 1.2 Hz) Cooled: 1x1010 Jones Time Constant: <2 µs Biasing Voltage: 5 V, 10 V Typical Element Resistance: 0.1 to 2.0 MΩ Responsivity (@Vb = 10 V): 9x103 V/W (1x1 mm), 4.5x103 V/W (2x2 mm) Power: 1 mW Read-out Electronics External (Not Included) Customizable Operating Temperature: +5 °C to +70 °C (SMD), -40 °C to +85 °C (TO-5, TO8) Amplifier Board Transimpedance Gain: 104 to 107 V/A, Adjustable Manually or per Software Amplifier Board Dark Current Cancellation: 1.24 µA to 1 mA, Adjustable Manually or per Software Amplifier Board Power Supply: 5 VDC, 60 mA (mini-USB Connector) Amplifier Board Output: Analog (±10 V), Digital (14 Bit) Amplifier Board Noise: 5 pA @1 kHz, 107 V/A Amplifier Board Dimensions: 75.90 x 35.10 x 28.70 mm (Analog), 89.30 x 35.10 x 26.30 mm (USB Output) Applications: Gas & Flame Detection; Laser Detection

PM and SM Versions; Panda PM or SM Fiber; 780 to 1550 nm; 3 Ports; Insertion Loss ≤0.7 to ≤1.0 dB Fiber optic circulators act as signal routers, transmitting light from an input fiber to an output fiber, but directing light that returns along that output fiber to a third port. They perform a similar function as an isolator, protecting the input fiber from return power, but also allowing the rejected light to be employed. OZ Optics miniature inline circulators are ideal for OEM applications. They are available with either singlemode or polarization maintaining fiber. OZ Optics’ PM fiber optic circulators are manufactured with polarization maintaining fibers, making them ideal for polarization maintaining applications such as 40 Gbit systems or Raman pump applications. They are also used in double pass amplifiers and in chromatic dispersion compensation modules.  The standard PM fiber alignment is for all power to be transmitted along the slow axis of each fiber (Fast axis blocking). With OZ Optics’ modular design and custom manufacturing capabilities, any of the three ports can be aligned for fast axis coupling. High extinction ratio connectors can also be installed. Regardless of the state of polarization of the return beam, the input fiber will still be isolated from reflected light. For non-telecom wavelengths and high power applications, the cube style circulator is offered. This design is well suited for custom applications. Additional connector and cable options and custom designs are also available. Please forward a detailed description of your application to us.