Summary of Contents for Bandwidth10 BW10-310A
- Page 1 APPLICATION NOTE BW10-310A VCSEL driver with TEC control and swept voltage generator Software revision 2.5, firmware revision 1.09...
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Page 2: Shipping List
BW10-310A Features of BW10-310A VCSEL driver • Anode grounded VCSEL driver up to 30mA for BW10 VCSEL. Supports 1060 nm, 1550 nm and 1654 nm family • Integrated TEC controller for BW10 VCSEL • Integrated swept voltage generation for BW10 VCSEL. Supports up to +40V for 1060 nm VCSEL family and up to -20V for 1550 nm and 1654 nm products. -
Page 3: Hardware Setup
BW10-310A Backside: Hardware setup Please follow the steps in order, “DO NOT” proceed to a next step without completing a previous step 1. Please ensure proper ESD precautions. Please wear an ESD wrist strap and use an ESD protection mat. -
Page 4: Software Installation
BW10-310A Software installation The GUI required Oracle’s Java 8u191 version or earlier. The V8 update 191 is the last version without licensing fees which is supporting the serial communication library. Please do not update to a more recent version. Bandwidth 10 is working for a solution. You can download the JRE directly from Oracle: https://www.oracle.com/java/technologies/javase/javase8-archive-downloads.html... -
Page 5: Graphical User Interface (Gui)
BW10-310A Graphical User Interface (GUI) The GUI has implemented several restrictions ensuring that the user cannot accidentally damage the laser by using wrong operation conditions and the GUI is also obeying the turn-on and turn-off procedures described in the laser application notes. As an example, the user cannot enable a current not suitable for the device or cannot enable the laser current if the TEC circuit is not enabled. - Page 6 BW10-310A 3. Now the comport is opened and the lower section of the GUI appears. Please check first if the firmware of the unit is 1.09. If not please contact your FAE for update instructions. The box board connected will change to a green background. You can also notice that the pin protection is enabled and the load / unload box is checked.
- Page 7 BW10-310A 4. Next click in the wavelength select section on the VCSEL wavelength / type you want to drive (i.e. 1550) and click select. Please check if the selected wavelength is correct. At this stage you refine the max laser drive and tuning voltage limits to ensure that you do not damage your specific laser.
- Page 8 BW10-310A 5. Now insert the laser into the fixture. Use the clamp mechanism to fix the TOSA with the fixture and ensure a good thermal connection. Once the laser is inserted uncheck the load / unload box. GUI will disable the pin protection. Next you can enable the VCSEL TEC controller. Note that the VCSEL and SOA TEC controller are enabled with the same circuit.
- Page 9 BW10-310A 6. Now you can enable the laser current. First check the box enable current / Vt. You can change the laser current with the slider and clicking update or by clicking in the text field and entering a number with the keyboard followed by enter. If you do not click update or hit enter the new value is not written into the microcontroller.
- Page 10 BW10-310A 7. For AC-tuning i.e. sweeping the tuning voltage select Arbitrary in the Vt type box and click select. The selection will change to “A” and the manual tuning voltage will be greyed out. Please select the preferred swept function and enter the upper and lower voltage limits. The upper and lower values are rounded to the nearest voltage setting supported by the hardware.