VDL-002 Fiber Optic Delay Line

Varies Delay Between Polarization States; Delay Range ±50 ps; Delay Resolution 0.0027 ps; Return Loss -40, -50, -60 dB; Max. Insertion Loss 1.2 dB OZ Optics’ DDL-650-11 differential polarization delay lines represent the next stage in controlling polarization mode dispersion in optical networks. The devices split the light within a fiber into orthogonal polarizations, and then actively vary the time that one polarization travels compared to the other polarization before combining the two polarizations together again. With this technique, one can introduce up to ±50 ps of optical delay in a system. The resolution of the DDL-650-11 differential polarization delay lines is better than 0.003 ps, thus providing a high degree of control. The devices are easily controlled by a computer via an RS-232 interface. Home and end position sensors allow easy monitoring of the device status and prevent any potential damage to the device. Key Features: Varies the Delay Between Two Polarization States Low Loss Sub-picosecond Delay Resolution: Wide Wavelength Range Delay Range: ±50 ps Delay Resolution: 0.0027 ps Max. Insertion Loss (IL): 1.2 dB Polarization Dependent Loss (PDL): <0.25 dB Return Loss: -40 dB, -50 dB, -60 dB Zero Delay Accuracy: ±0.1 ps Repeatability: <0.05 ps Speed: 3 ps/s Electronically Controlled Interface: RS232 or TTL Supply Voltage: 6 V to 8 V, max. 180 mA Dimensions: 105 x 51 x 25 mm Applications: PMD Compensation in High-speed Communications Networks; PMD Emulation; TDM Bit Alignment; Interferometric Sensors; Coherent Telecommunications

840-1650 nm; Delay Range 0-130 ps (4 cm); RL 55 dB; Fiber Type SMF-28, HI780, HI1060, PM Panda; IL <0.8 dB; PDL 0.1 dBLunas’ VDL-004 module is a miniature variable optical delay line designed specifically for OEM applications. This device offers continuous control with high precision, zero backlash, and good thermal stability.An internal mirror can be installed to cause light to double pass the device, doubling the delay range. A locking mechanism is provided for locking the delay at a permanent position. The VDL-004 delay line module generally comes with single mode (SM) or polarization maintaining (PM) fiber pigtails per customer requirement.With a footprint of only 78 x 22 x 15 mm for a delay range of 130 ps (40 mm), the device can be easily integrated into larger instruments or assemblies for precision optical path length control or timing alignment. Convenient mounting brackets allow mounting in any orientation, as well as easy integration of multiple units on a base plate to form an array.Key Features:Compact Size: 78 x 22 x 15 mmContinuous AdjustmentZero BacklashLow Insertion Loss: <0.8 dBInsertion Loss Variation: <0.4 dB Over Entire RangeHigh StabilityFlexible Mounting OptionsPosition Locking IncludedOperating Wavelength: 840, 1060, 1310, 1550, 1260 to 1650 nmOptical Delay Range: 0 to 130 ps (40 mm) ContinuousOptical Delay Resolution: 3.34 ps (1 mm) Per Full TurnDelay Repeatability: <20 µmZero Point Delay Offset: 230 psPolarization Dependent Loss (PDL): 0.1 dB (SM Fiber)Return Loss (RL): 55 dBPolarization Extinction Ratio: 20 dB (PM Model)Optical Power Damage Threshold: 300 mWFiber Type: SMF-28, HI780, HI1060, PM PandaApplications: Microwave Photonics; Phased Array Antennas; Coherent Detection Systems; Optical Time Division Multiplexing (OTDM); Optical Coherence Tomography (OCT); Optical Interferometry; Optical Fourier Spectrum Analysis; Fiber Sensors