FPS-001 Phase Shifter

780-1550 nm; Total Phase Shift >65π; IL <0.5 dB; RL >50, >55, >58 dB; PDL <0.05, <0.1 dB; Residual Amplitude Modulation ±0.01 dBCoherent or interferometric sensor systems, such as distributed acoustic sensors (DAS), often require a low-loss, low-cost phase shifter or modulator to obtain the desired sensing signals. Lunas FPS-002 is an all-fiber device that shifts or modulates phase shifts up to 75π at frequencies from DC to 20 kHz.The FPS-002 phase shifter requires a lower half-wave voltage than the FPS-001 phase shifter module: only 2 V compared to up to 20 V. Like the FPS-001, it is an all-fiber design and offers the benefits of low loss and back reflection. Two different size packages (small frame or large frame) are available to accommodate the bend diameter requirements of different fibers.Key Features:Low Insertion Loss (IL): <0.5 dB (at λc, Excluding Connectors)Low Polarization Dependent Loss (PDL): <0.05 dB (SM), <0.1 dB (PM)Return Loss (RL): >58 dB (Without Connectors), >55 dB (With APC Connectors), >50 dB (With PC Connectors)Low Residual Amplitude Modulation: ±0.01 dB at 1550 nmTotal Phase Shift (@500 Hz, Vpp = 150 V): >65π (@ 1550 nm)Low Half-wave Voltage (@ 500 Hz): 2.5 to 4.5 V Typical (Small Frame), 0.7 to 1.5 V Typical (Large Frame)Operating Wavelength: 780, 1060, 1310, 1550 nmFiber Type: ClearCurve ZBL, HI1060, 780 HP, PM, PM980XPCapacitance of Piezo: 0.18 µFMaximum Applied Voltage: 150 VCompact Size: 35 x 17 x 10 mm (Small Frame), 45 x 27 x 11 mm (Large Frame)Applications: Fiber Interferometers; Fiber Laser Systems; Fiber Sensor Systems

Receptacle Style; 180 to 2000 nm; Coupling Efficiency >60% to >80%; Backreflection -14 to -60 dB; Power Handling >1 to >100 W In OZ Optics' HPUC series of receptacle style, non-contact style laser to fiber couplers, an air gap exists between the fiber and the lens. This design is more flexible, allowing a wide range of lens types and focal lengths to be used. The distance between the fiber and the lens can be adjusted to compensate the changes in the source wavelengths or to intentionally defocus the laser beam to prevent arcing in high power laser to multimode fiber applications. Couplers using GRIN lenses, achromats, aspheres, fused silica, plano-convex, and biconvex lenses have all been made utilizing this design. Non-contact style couplers can handle input powers of up to 100 W CW, and even higher energies from pulsed sources. They are best suited for applications where either the input energy is higher than 400 mW, or when more than one wavelength is to be coupled into the fiber, or for input beams that have unusually large beam diameters or divergence angles. They also have superior polarization maintaining capabilities compared to physical contact style couplers. However because of the air gap between the fiber and the lens, the backreflection level for the endface of the fiber is about -14 dB. This can be reduced to -40 dB to -60 dB by slant polishing both fiber ends to deflect the backreflected signal. There is a significant variation in the endface geometries of angled PC (APC) connectors. This effects the spacing between the endface of the fiber and the lens. To minimize this variation, OZ Optics offers an angled flat (AFC) connector. This connector features a beveled endface where the fiber itself is angled but the ferrule tip is flat. This geometry provides optimum repeatability between connections. For users of SMA connectors, please note that standard SMA connectors and receptacles are constructed to rather loose tolerances, leading to poor repeatability. For core diameters of 100 µm or smaller, we recommend using SMA connectors with Zirconia ferrules and receptacles with Zirconia sleeves. This will give maximum repeatability. Better still, consider using FC connectors instead. Key Features: High Power Handling Wide Range of Lenses Excellent Polarization Maintaining Capabilities Different Connector Receptacle Versions Wide Wavelength Ranges Applications: Laser Shows/Entertainment; Spectroscopy; Interferometric Sensors; Fluorescence Measurements; Medical, Pharmaceutical & Chemical Sensors; OEM Laser Systems