Polarization­ 
control & analysis

The DOP-201 uses a low activation loss fiber squeezer polarization controller in conjunction with a patented maximum-minimum search method that allows it to unambiguously measure both low and high DOP values in 30 ms, and to operate over a wide wavelength range. Simultaneous measurement of DOP and optical power level of the light source under test can be used to obtain DOP power dependence and to ensure low insertion loss during depolarizer manufacturing.

• Accurate for both high and low DOP values
• Wide wavelength range
• Analog output for automated testing
• 30 ms measurement speed

The ERM-202 is a polarization extinction ratio (PER) meter based on a rotating polarizer design and is offered in either a single-channel or dual-channel configuration.

By combining low-noise electronics with a precision stepper motor, the instrument provides a PER dynamic range of up to 50 dB and an angular resolution of 0.06°. In a single measurement process, the ERM-202 determines the PER, optical output power, and polarization axis angle of the device under test (DUT).

The dual-channel model additionally supports measurements of the power distribution between two polarization-maintaining (PM) outputs. This is particularly useful for components such as Y-branch fiber gyro integrated optical circuits (IOC), PM couplers (PMC), and polarization beam splitters (PBS).

• PER measurement range >50 dB
• Angle resolution 0.06°
• Simultaneous PER and power ratio measurement (dual channel)

The LPD 100 multiport log detector is a photodiode amplifier developed for the detection of very low optical power levels below -90 dBm.

The system converts low-level optical signals into a linear logarithmic electrical output signal and is available in two- or four-channel configurations. Thanks to its wide dynamic range, the LPD 100 is well suited for closed-loop measurement and control applications that require precise optical power monitoring.

The PDL-201 is designed for the measurement of polarization dependent loss (PDL), insertion loss (IL), and optical power in optical components and devices.

Using a patented maximum/minimum search method compliant with TIA/EIA-455-198, the instrument determines PDL, IL, and optical power simultaneously within approximately 30 ms. Compared to systems based on polarization scrambling, the max-min measurement approach provides reliable results across both low and high PDL ranges. In contrast to Mueller Matrix-based instruments, the PDL-201 also supports a broad wavelength range without requiring wavelength-specific calibration.

The POD 2000 is a DSP-based polarimeter developed for high-speed polarization measurement, analysis, and monitoring applications.

Using four simultaneous measurement channels, the instrument captures all four Stokes parameters in real time and determines both the instantaneous state of polarization (SOP) and the degree of polarization (DOP) of the incoming optical signal.