PSM-003 Micro Scrambler/Controller User Manual
Contents
1. GP UM PSM 003 11 Page 8 of 19 PSM 003 User Guide 1 2 Device Configurations and their Functions The PSM 003 is available in 3 different configurations selected at the time of order 1 Polarization Controller 2 Fixed rate continuous trace polarization scrambler 3 Fixed rate random scrambler For the polarization scrambler configurations the scrambling rate is also specified at the time of order The functions of the three types of PSM 003 are described below Polarization controller The SOP of the output light can be set or modulated by applying a 0 5V analog control voltage to each of the 3 fiber squeezers The control signal can be a DC voltage or a sine wave of frequency up to 10 Hz Figure 3 SOP change by sequentially changing control voltages of different channels Continuous polarization scrambler The PSM 003 generates a continuous polarization trace that evenly covers the Poincar sphere at a preset rate Figure 4 Continuous scrambling trace GP UM PSM 003 11 Page 9 of 19 PSM 003 User Guide Random polarization scrambler The PSM 003 generates discrete random points evenly distributed on the Poincar sphere There are two modes of operation Internal trigger Points are automatically generated at a preset rate External trigger PSM 003 generates one random point per trigger pulse received Figure 5 Random scrambling trace GP UM PSM 003 11 Page 10 of 19 PSM 003 User2. Disable switch can be used to lock in the current setting If the switch is in the Disable position the polarization controller will not respond to slider movement Polarization Scrambler Continuous The PSM 003 performs continuous scrambling at a preset rate as long as it is enabled Use the Enable Disable switch to pause and resume scrambling Polarization Scrambler Random The trigger selection switch selects between automatic and manual triggering of random SOP generation Switch position UP Automatic triggering DOWN Manual triggering In automatic mode the PSM 003 generates random SOPs at a preset rate In manual mode the PSM 003 generates one random SOP each time the push button immediately to the left of the power jack in the diagram is pressed Use the Enable Disable switch to pause and resume scrambling GP UM PSM 003 11 Page 18 of 19 PSM 003 User Guide Section 4 0 Specifications Optical Operating Wavelength 1260 1650 nm standard Measurement grade 0 05 dB excluding connectors Control grade 0 1 dB excluding connectors gt 65 dB excluding connectors Measurement grade 0 01 dB Control grade 0 1 dB Measurement grade lt 0 01 dB Control grade lt 0 1 dB DL ee 0 01927 0 096x 0 487 2 47 127 60r rad s Electrical Controller 5V input on all 3 axes at 25 C Scrambler Continuous scrambling at 12n rad s and 25 C Physical and Environmental Fiber Type 9 125 um single mode fiber s
3. COntinuouS sssssnssnsnsnnnnnnnnnnnan 18 Polarization Scrambler Random sssssssnnsnsusnnnnnnnnnnnan 18 Section 4 0 SVECITICALIONS scrissi cuiii 19 ODC Al circi aE 19 Electrical icerir 19 Physical and Environmental sssssssss222 19 GP UM PSM 003 11 Page 5of19 PSM 003 User Guide GP UM PSM 003 11 Page 6 of 19 PSM 003 User Guide Section 1 0 Overview The PSM 003 is an OEM micro polarization controller that integrates miniature sized electronic driving control circuitry with General Photonics all fiber dynamic polarization controller The state of polarization SOP of the output light is controlled via three 0 5V analog control voltages The device requires a 12 VDC power supply and the power consumption is low enough for it to be powered by batteries or a wall plug transformer e Cannnnal Dhataniee _ Bf fei fief Of 0 F FEAF EOF PP Pes ol PSM 003 Micro Polarization Controller Module U S Patent 6480637 6493474 Figure 1 PSM 003 micro polarization controller scrambler 1 1 Principle of Operation The PSM 003 is based on a PolaRite III polarization controller which consists of 3 fiber squeezers oriented 45 from each other Each fiber squeezer is driven by an applied voltage signal Squeezing the optical fiber produces a linear birefringence in the fiber and thus alters the state of polarization of a light signal passing through it An arbitrary polarization state
4. Guide Section 2 0 Features 2 1 Optical Features The PSM 003 has two fiber pigtails to accommodate the input and output optical signals 2 2 Electrical Features The electrical interface to the PSM 003 is a 10 pin IDC connector The connector diagram is shown below The tables list the pin definitions for the connector for the different PSM configurations OOUOO OOOUOO i Figure 6 PSM 003 electrical connector pinout Table 1 Electrical connector pin definitions for PSM 003 C controller woa o ee Not connected Not connected Enable Disable TTL Low Enable High Disable 12V Power input DC 12V 5 current gt 25mA 12V Power input DC 12V 5 current gt 25mA GP UM PSM 003 11 Page 11 of 19 PSM 003 User Guide Table 2 Electrical connector pin definitions for PSM 003 S Continuous scrambler 12V Power input DC 12V 5 current gt 25mA 12V Power input DC 12V 5 current gt 25mA Ground System ground Description Range and Function Trigger Select TTL Low external High internal Voltage Current Guidelines Analog Control Voltages PSM 003 C AIN1 3 Voltage Range 0 to 5V Drive current lt 1 5 mA Digital TTL EN EXT TR Voltage Current TTL circuit capacity 3 to 5V gt 400UA O to 0 4V gt 1mA GP UM PSM 003 11 Page 12 of 19 PSM 003 User Guide 2 3 Dimensions and Mounting Holes The PSM 003 has 4 mounting holes on the bottom of the enclosure Package dimensions and t
5. Making Light Work Lighter stops Ganaral Phatanics_U PSM 003 Micro Polarization Controller Scrambler PSM 003 Micro Polarization Controller Module U S Patent 6480637 6493474 User Guide Version 1 1 Date April 9 2015 PSM 003 User Guide General Photonics I ncorporated is located in Chino California For more information visit the company s website at www generalphotonics com or call 909 590 5473 GP UM PSM 003 11 Page 2 of 19 PSM 003 User Guide SAFETY CONSIDERATIONS The following safety precautions must be observed during operation of this product Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the product General Photonics assumes no liability for customers failure to comply with these requirements Before operation the user should inspect the product and review the manual carefully Use only in a safe work environment in terms of temperature humidity electrical power and risk of fire or shock The product is designed for indoor use Avoid exposure to liquids or water condensation Provide adequate ventilation for cooling Operate the product on a stable surface Avoid excess vibration Standard laser safety procedures should be followed during operation After powering off the PSM 003 wait at least 5 seconds before powering it back on If this procedure is not followed t
6. he PSM 003 may not function properly Never look into the light source fiber connector when the light source is turned on THE OUTPUT LIGHT FROM A HIGH POWER LASER IS HARMFUL TO HUMAN EYES Follow industry standard procedures when operating a high power laser source GP UM PSM 003 11 Page 3 of 19 PSM 003 User Guide GP UM PSM 003 11 Page 4 of 19 PSM 003 User Guide Section 1 0 OC a ee 7 1 1 Principle OF Operation sssssssss 2222 22u2222 222susuunnnuununnnnnnnn 7 1 2 Device Configurations and their Functions cccceeeessennnnes 9 Section 2 0 FE atures ssssssss22222000nnnunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn n 11 2 1 Optical Features ssssssssuusnnuunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 11 2 2 Electrical Features asssnannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 11 2 3 Dimensions and Mounting Holes cccccccsccccccccccccccceeeeeeeens 13 Section 3 0 Operation I NStTrUCTIONS ssssssssuss2usu22u222uu2unnnnnnn 15 3 4 UNPACKING sarriena NEESON EEANN 15 Se OPE ION sroki E E 15 Polarization Controller sassssssusnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 15 Polarization Scrambler COntinuouS sssasnssnsnnnnnnnnnnnnnan 16 Polarization Scrambler Random sssssssnnsnansnnnnnnnnnnnan 16 3 3 Driver Board Optional ssssssnsunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 17 SLEALE o PA N A A A E E O 18 Polarization Controller sassssssusnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 18 Polarization Scrambler
7. he locations and sizes of mounting holes are given below 2X5 PIN CONNECTOR WITH KEY 100 mil SPACING RIBBON CABLE 9 LONG 4X 0 80 UNF 28 QOZ DEEP UNIT INCH Figure 7 Dimensions and mounting hole information All dimensions given in inches GP UM PSM 003 11 Page 13 of 19 PSM 003 User Guide GP UM PSM 003 11 Page 14 of 19 PSM 003 User Guide Section 3 0 Operation Instructions 3 1 Unpacking Inspect PSM 003 for any physical damage due to shipping and transportation Contact carrier if any damage is found Check the packing list to see if any parts or accessories are missing Packing List 1 PSM 003 2 Electrical connection cable a Power adapter optional only for devices with control board 3 2 Operation Polarization Controller 1 Connect optical input and output to PSM 003 2 Make the necessary electrical connections to the 10 pin IDC connector see Table 1 for pin definitions For a polarization controller these include a Power supply 12VDC 25 mA b Enable Disable signal TTL level Low Enabled High Disabled The default condition is enabled so if this pin is left unconnected the controller will be enabled For a controller the Enable Disable function acts as a position lock while disabled the controller remains in its current setting It does not respond to further changes in control voltage until enabled c Analog control voltage for each of the 3 channels of the p
8. is enabled so if this pin is left unconnected the scrambler will be enabled For a scrambler the Enable Disable function acts as a pause resume function while paused the SOP remains at the setting at which the scrambling was paused When resumed the SOP variation begins from that state c Trigger select This selects between external and internal triggering In internal trigger mode the PSM 003 generates random SOPs at a preset rate determined at the time of purchase In external trigger mode the PSM 003 generates one random point per trigger pulse received TTL Low external trigger TTL High internal trigger The default state is internal trigger d External trigger signal i Trigger edge Rising edge ii Voltage levels TTL levels iii Minimum pulse width 1 ms iv Maximum pulse frequency 10 Hz GP UM PSM 003 11 Page 16 of 19 PSM 003 User Guide 3 3 Driver Board Optional General Photonics offers an optional manual control driver board for the PSM 003 The purpose of the board is to facilitate testing and integration of the PSM 003 The user controls the PSM 003 via sliders switches and buttons on the control board The board comes with a power adapter that plugs into a wall power supply Driver board dimensions 3 5 x 3 5 x 0 7 inches B Enable Disable switch and LED indicator Up disabled Down enabled LED on A 3 axis analog voltage indicator LEDs for controller only C P
9. of monochromatic light can be represented by a single point on the Poincar Sphere as shown in Figure 2 Increasing the voltage on one fiber squeezer X1 or X3 increases the pressure from that squeezer causing the polarization state to rotate clockwise about the OQ axis Decreasing the voltage causes the point to rotate counterclockwise Similarly increasing or decreasing the voltage on a second fiber squeezer X2 oriented 45 from the first one causes the polarization state to rotate clockwise or counterclockwise about an axis OH axis orthogonal to the first one GP UM PSM 003 11 Page 7 of 19 PSM 003 User Guide SOP on Poincar Sphere H Horizontal Linear Polarization LCP Left Circular Polarization V Vertical Linear Polarization RCP Right Circular Polarization Q 45 degree Linear Polarization R 45 degree Linear Polarization cw Increase the CW Applied Voltage a os LB S CCW X4 X CCW Decrease the Applied Voltage Figure 2 Poincar Sphere SOP representation and illustration of effects of fiber squeezers The half wave voltage V A at wavelength A can be calculated from Va Va 1550 nm x 1550 where V 1550 nm is the half wave voltage at 1550 nm For example the half wave voltage at 1310 nm is 85 of the half wave voltage at 1550 nm By appropriately tailoring the control signals the polarization controller can be made to perform various polarization control or scrambling functions
10. olarization controller The user can manually adjust the output SOP by changing the value of DC control voltages to the different channels or can generate periodic SOP traces or patterns on the Poincar sphere by using periodic waveform control voltages Guidelines for control voltages i Voltage range O to 5V ii Frequency limit for periodic waveform inputs 10 Hz GP UM PSM 003 11 Page 15 of 19 PSM 003 User Guide Polarization Scrambler Continuous 1 Connect optical input and output to PSM 003 2 Make the necessary electrical connections to the 10 pin IDC connector see Table 2 for pin definitions For a continuous polarization scrambler these include a Power supply 12VDC 25 mA b Enable Disable signal TTL level Low Enabled High Disabled The default condition is enabled so if this pin is left unconnected the scrambler will be enabled For a scrambler the Enable Disable function acts as a pause resume function while paused the SOP remains at the setting at which the scrambling was paused When resumed the SOP variation begins from that State Polarization Scrambler Random 1 Connect optical input and output to PSM 003 2 Make the necessary electrical connections to the 10 pin IDC connector see Table 3 for pin definitions For a random polarization scrambler these include a Power supply 12VDC 25 mA b Enable Disable signal TTL level Low Enabled High Disabled The default condition
11. ower supply indicator LEDs Bennaf Sina trusses fier eee F Faran T PSM 003 E Polarization Contr llen Module s Patent 6480637 1649 474 D 10 Pin connector connects PSM 003 to control board E Reserved switch and LEDs Not used in current version j L h cai a e val a tne i l i O a ho Auto Manual trigger mode selection switch for random scrambler F Power supply jack Use only with AC adapter provided with board H 3 slide potentiometers 3 axis voltage adjustment For controller only G Trigger push button for random scrambler only Figure 8 PSM 003 controller board Page 17 of 19 GP UM PSM 003 11 PSM 003 User Guide Setup 1 Connect optical input and output to PSM 003 2 Make sure the PSM 003 s 10 pin electrical connector is connected to the corresponding connector on the driver board middle right in Figure 8 The board and cable connectors are keyed and can only be connected in one orientation 3 Connect the external power adapter to the board s power jack and plug it into the wall electricity supply Both power indicator LEDs on the board should turn on Power supply adapter output 12VAC 500 mA 4 Move the Enable Disable switch to the Enabled position Polarization Controller Use the three sliders to control the voltage input to the three channels of the polarization controller The Enable
12. tandard Operating temperature 10 C to 70 C Storage temperature 40 C to 85 C Dimensions 2 58 L x 1 25 W x 0 63 H 6 54 L x 3 18 W x 1 60 H cm Weight 2 Oz 50g GP UM PSM 003 11 Page 19 of 19
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