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THORLABS MX40G Series User Manual Download Page 44

 

 

 

 

 

 

 

 

 

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Summary of Contents for MX40G Series

Page 1: ...MX40G Series 40 GHz E O Converters MX70G Series 70 GHz E O Converters User Guide...

Page 2: ......

Page 3: ...17 4 4 3 Null Mode 17 4 4 4 Manual Mode 18 4 5 Variable Optical Attenuator Settings Page 20 4 6 Laser Settings Page 22 4 7 Load Page 24 4 8 Menu Page 25 4 8 1 System Wavelength 25 4 8 2 Display and So...

Page 4: ...40G MX70G Series of E O Converters 8 2 Replacement Parts 34 8 3 Replacing the Main Fuse 35 Chapter 9 Troubleshooting 36 Chapter 10 Declaration of Conformity 37 Chapter 11 Thorlabs Worldwide Contacts 3...

Page 5: ...h an s2p file characterizing its frequency response This frequency response can be used to de embed the response of the O E DUT by separating its response from the overall measurement response Please...

Page 6: ...tunable on the ITU 50 GHz grid and include a dither feature for wavelength stabilization An external laser source operating from 1250 nm to 1610 nm can also be used to provide the optical input Eithe...

Page 7: ...n Display F2 Adjustment Knob F3 Key Switch and Status Indicator Lasing Disabled Lasing Enabled F4 Grounding Jack Banana Connector Earth Ground F5 Laser Output PM FC PC Connector F6 Laser Input PM FC P...

Page 8: ...D02 Figure 3 Back Panel Callout Description B1 I O Port DB15 Connector B2 Laser Interlock 2 5 mm Connector B3 Option Label B4 RS 232 Port DB9 Connector B5 USB Port USB Type B Connector B6 Power Connec...

Page 9: ...ion endangered environments Warning Laser Radiation Avoid Exposure Radiation emitted from apertures Do not look into the laser aperture while the laser is on Injury to the eye may result Laser should...

Page 10: ...nterference to radio communications However there is no guarantee that interference will not occur in a particular installation This product has been tested and found to comply with the limits accordi...

Page 11: ...C connectors on the front panel Be sure to clean both ends of the fiber as described in the Maintenance Section of this manual Figure 6 PM Loopback Fiber Cable Installed Insert the key into the interl...

Page 12: ...n is ON and they turn red to indicate the function is disabled The central section is the main dashboard for reporting operational values of each section Tapping the screen in this middle area will ta...

Page 13: ...In bulkhead The converter s system wavelength is factory preset to correspond to the wavelength band of the integrated laser source If an external laser is to be used with the converter the system wa...

Page 14: ...nging the values for the selected parameters The main control knob on the front panel can also be used to adjust and confirm selected values The screen shots below show examples of the touch screen co...

Page 15: ...7 4 Turn the laser on by tapping the lower left touchscreen button on the Home page Figure 9 5 Enable the bias controller by tapping the top left touchscreen button on the Home page Figure 9 Wait for...

Page 16: ...modulator is achieved by biasing it at one of the Quadrature points where the transmission is closest to 50 Some non linear frequency doubling and phase modulation applications require biasing at the...

Page 17: ...com manuals and entering the item of your E O Converter A typical frequency response for each converter is plotted below in Figure 18 The phase response is not shown Figure 18 Typical Frequency Respon...

Page 18: ...e are four modes for MZM bias control 1 Quadrature 2 Peak 3 Null and 4 Manual The screen shot below is an example of the information presented and the controls available when the Mode field is selecte...

Page 19: ...he amplitude and the frequency of AC dither tone can be selected by the user The modulated optical output is detected by a frequency and phase sensitive detector which can then interpret whether the D...

Page 20: ...too low the MZM bias may not stay locked Typically a value from 300 mV to 500 mV is a good starting point The dither tone can be optionally disabled to accommodate applications requiring the highest S...

Page 21: ...non linear frequency doubling The optical phase is 180 shifted on opposite sides of the Null point Figure 26 Peak Mode Settings 4 4 3 Null Mode The Null Mode adjusts the DC bias voltage so the transmi...

Page 22: ...perior SNR compared to the Quadrature mode This mode is recommended for analog signals or higher level Pulse Amplitude Modulation PAM formats Constant Ratio works by holding the MZM ratio of input lig...

Page 23: ...matically calculated to keep the MZM at the same location on the transmission function For example in order to switch to Constant Ratio mode at the Quadrature location follow these steps Turn the bias...

Page 24: ...perate in either of two modes 1 Constant Attenuation and 2 Constant Output Power Figure 31 Select between Constant Attenuation and Constant Output Power VOA Modes Constant Attenuation Mode maintains a...

Page 25: ...ower constant independent of input fluctuations within controllable limits such as input power and attenuation Figure 33 Constant Output Power VOA Mode Page Functions and Possible Warnings Warning ind...

Page 26: ...when the 1310 nm fixed wavelength source is the internal laser When the internal laser is not the standard C band tunable laser the laser type is denoted in the Options label on the rear panel of the...

Page 27: ...ion of optical frequency when the laser is operated with and without dither enabled The red trace shows low noise operation when dither is turned off Wavelength stability is improved by operating with...

Page 28: ...a known state Future firmware revisions will have the ability to store instrument states defined by the user as well Figure 37 Preset State Option Accessed through the Load Page Tapping on one of the...

Page 29: ...calibration wavelengths of the power monitors 1310 nm 1550 nm and 1590 nm represent the centers of the O band C band and L band and provide the user with accurate power readings at or near those wavel...

Page 30: ...screen display is visible before it sleeps BUTTON CLICK toggles the sound produced when tapping buttons On Off NOTIFICATION BEEP toggles the sound associated with certain on screen notifications On O...

Page 31: ...feature You can set them to your favorite color Figure 43 Controls to Adjust the LEDs Providing the Under Instrument Accent Light 4 8 5 Thorlabs Help Page To open the screen shown below tap the THORL...

Page 32: ...y of Supplied Magnitude Response6 MX40G Series 0 85 dB From 40 MHz to 40 GHz MX70G Series 0 85 dB From 40 MHz to 40 GHz 1 75 dB From 40 GHz to 70 GHz Modulator RF Input 1 V Max for Linear Response7 5...

Page 33: ...rol Specifications Parameter Typical Notes Power Monitors Accuracy 0 5 dBm Each Monitor At Calibrated Wavelength Power Monitors Resolution 0 01 dBm Each Monitor Power Monitor Insertion Loss 0 1 dB Typ...

Page 34: ...dB 40 60 Intrinsic Linewidth kHz 10 15 Relative Intensity Noise RIN dB Hz 145 Back Reflection dB 14 Polarization Extinction Ratio PER dB 18 L Band Tunable Laser MX40G LB MX70G LB Optical Output Power...

Page 35: ...agram in Chapter 3 The power monitors provide a voltage that is proportional to the optical power with one of two gain settings These values are available on the I O DB15 connector The gain setting fo...

Page 36: ...f the interlock jack are listed in the following table and the circuit schematic describing how the interlock jack is connected inside the laser head is shown in Figure 48 b Specification Value Interl...

Page 37: ...MX40G MX70G Series of E O Converters Chapter 7 Mechanical Drawings Rev E March 19 2019 Page 33 Chapter 7 Mechanical Drawings Figure 49 E O Converter Mechanical Drawing...

Page 38: ...a new connection is made The end faces of the internal fiber connectors can easily be damaged by the use of dirty fiber ends If damage occurs the instrument will need to be sent back for repair We sug...

Page 39: ...e the fuse holder slide from the power entry module use a flat screwdriver Figure 50 Power Entry Module Figure 51 Removing the Fuse Holder Slide Investigate the fuse This can be done with a simple con...

Page 40: ...the box should cool itself and return to the standby Do not operate or leave the instrument in standby mode in an environment above 40 C Blinking Amber Green Indicates the instrument is both overheat...

Page 41: ...MX40G MX70G Series of E O Converters Chapter 10 Declaration of Conformity Rev E March 19 2019 Page 37 Chapter 10 Declaration of Conformity...

Page 42: ...chuelo 171 S o Carlos SP 13560 110 Brazil Tel 55 16 3413 7062 Fax 55 16 3413 7064 www thorlabs com Email brasil thorlabs com Japan Thorlabs Japan Inc 3 6 3 Kitamachi Nerima ku Tokyo 179 0081 Japan Tel...

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Page 44: ...www thorlabs com...

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