Name: PSY-201 Polarization Synthesizer/Analyzer
Brand: Luna
SKU: PSY-201

Overview

The Luna PSY-201 is a deterministic polarization controller that generates and maintains any desired state of polarization (SOP), independent of the input SOP. It integrates a polarization controller, a polarimeter and a closed-loop control algorithm in a single instrument that functions as a polarization state generator, controller, stabilizer, scrambler and analyzer. It is intended for R&D and manufacturing test applications that require low insertion loss, high optical power handling and precise polarization control.

SOP generation and stabilization

The output SOP can be defined by entering Stokes parameters, by manually tuning the SOP to any point on the Poincaré sphere, or by optimizing a polarization-dependent metric such as transmission, extinction ratio or detector response. Once the desired SOP is reached, the instrument actively maintains it against input polarization fluctuations. A shortcut function generates six distinct SOPs (0°, 90°, ±45°, RHC and LHC) for Mueller matrix measurements. Additional functions include programmed SOP traces and variable-rate polarization scrambling with different scrambling patterns.

Polarimeter mode

With the internal polarization controller disabled, the PSY-201 operates as an in-line polarimeter, measuring the instantaneous SOP and degree of polarization (DOP) of the input light. Analog voltage outputs for SOP, DOP and power support integration into automated test equipment.

PolaView software

The PolaView software displays the output SOP on a Poincaré sphere or on a virtual oscilloscope, and provides data logging for long-term measurement of polarization changes of up to 1 billion points.

Key Features

Deterministic polarization control and tracking
Polarization scrambling
User calibration function to optimize DOP and SOP accuracies at arbitrary wavelengths and temperatures
Real-time Poincaré Sphere display
Analog voltage output for SOP/DOP/power for ATE integration
Data logging of SOP up to 1 billion points
Up to +25 dBm operating power
Low insertion loss
4 MHz SOP sampling rate
1 MHz analog bandwidth
45 dB input power dynamic range
High-speed SOP generation and tracking
Six predefined SOPs (0°, 90°, ±45°, RHC, LHC) for Mueller matrix measurements

Specifications

Absolute Maximum Rating

Optical Power Damage Threshold Standard	300 mW Standard version
Optical Power Damage Threshold High-Power	400 mW High-Power version

Optical Characteristics

Operation Wavelength PSY-201-15-FC/APC	1480 / 1550 / 1620 nm (min. / typical / max.) C/L band version
Operation Wavelength PSY-201-13-FC/APC, PSY-201-13-FC/APC-HPL	1280 / 1310 / 1340 nm (min. / typical / max.) O band version
Sampling Rate (Max)	4,000,000 SOP samples/s
Analog Bandwidth	1,000,000 Hz For input power > -10 dBm (Standard Version), or >5 dBm (High Power version). At lower power levels, bandwidth may change due to automatic gain control.
SOP Settling Time	1 ms At stable input SOP
SOP Stability	0.1 Degree (with stable input SOP); 0.5 Degree (with input SOP variation < 2 π/s); 2 Degree (with input SOP variation < 10 π/s) On the Poincaré sphere. Standard version with Input Power >-25 dBm and DOP >95%; High Power version with Input Power >-10 dBm and DOP > 95%.
SOP Measurement/Generation Uncertainty	±0.25 Degree After user calibration; on the Poincaré sphere
DOP Uncertainty	±2 % (using built-in calibration); ±0.5 % (after user calibration) Standard version with input > -25dBm, High Power version with input > -10dBm
Input Stokes Parameter Resolution	0.001
Optical Power Uncertainty	±0.25 dB
Insertion Loss Standard	1.6 dB max. at center wavelength Standard version; referenced without connectors
Insertion Loss High-Power	1.0 dB max. at center wavelength High-Power version; referenced without connectors
Return Loss	55 dB (APC connector); 45 dB (PC connector)
PDL Standard	< 0.25 dB Standard version; referenced without connectors
PDL High-Power	< 0.20 dB High-Power version; referenced without connectors
PMD	< 0.1 ps
Operating Power Range Standard	-35 to +10 dBm Standard version
Operating Power Range High-Power	-20 to +25 dBm High-Power version
Measurable SOP	Entire Poincaré Sphere

Measurement (Web Summary)

PER measurement range	0 to 40 dB
PER resolution	0.1 dB

Interfaces

Communication Interfaces	High Speed USB 2.0 (30 MB/s data rate) for PolaView software, RS-232, Ethernet, GPIB
Analog Output	0 to 5 V max range, user configurable Monitor voltage for DOP, S1, S2, S3, power or dREF

General

Power Supply	100~240 VAC, 50~60 Hz, 100 VA
Operating Temperature	0 ~ 40 ℃
Storage Temperature	-20 ~ 60 ℃
Relative Humidity (non-condensing)	<80 %
Dimensions	2U, 19” half rack width 14 (L) x 8.5 (W) x 3.5 (H) Inches
Weight	3.5 kg
Reference fiber	Specifications are based on the pigtail fiber SMF-28 Unless otherwise noted, specifications apply for 1480-1620nm or 1280-1340nm operation at 23±5°C, at power levels >-25 dBm (Standard version) or > -10 dBm (High Power version)

Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.

Options & Accessories

Option	Description
PSY-201-15-FC/APC	Polarization Synthesizer/Analyzer, 1480-1620nm — With PolaView software, FC/APC connector, standard operating power and losses
PSY-201-13-FC/APC	Polarization Synthesizer/Analyzer, 1280-1340nm — With PolaView software, FC/APC connector, standard operating power and losses
PSY-201-13-FC/APC-HPL	Polarization Synthesizer/Analyzer, 1280-1340nm, high power / low loss — With PolaView software, FC/APC connector, high operating power of +25dBm, Low losses version