Optical Power Monitor OPM150
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OPM150 Optoelectronics & Engineering Services USB-Controlled Optical Power Monitor HIGHLIGHTS APPLICATIONS • Low cost • Service • Wavelength ranges • Bandwidth 190-950 nm 800-1550 nm 800-1650 nm 400-1600 nm 10 kHz • Laboratory • R&D • OEM PRINCIPLE OF OPERATION The OPM150 employs high quality, large area photodiodes with a precise analogue transimpedance amplifier and digital signal processing. The photodiode head has a diameter of 25mm for mounting in standard optomechanical systems. The signal processing unit is very compact for simple integration in OEM systems. FIELDS OF APPLICATION The large detector surface ensures easy use. OPM150Engl_RevB5.doc These power monitors are particularly suitable for field use such as laser servicing or in OEM applications. The unit is USB powered: no external power supply is required. The analogue bandwidth is 10kHz and is sampled at up to 30 Hz using the graphical software supplied. Artifex Engineering Dortmunder Str. 16-18 26723 Emden, Germany Tel: +49-(0)4921-58908-0 Fax: +49-(0)4921-58908-29 mail: info@afx-eng.com http://www.afx-eng.com

ABSOLUTE MAXIMUM VALUES Average power 15mW Temperature range 0 – 60 °C ORDERING INFORMATION Base module (amplifier and USB interface): OPM150 Order detector heads separately with the order codes as indicated in the table on page 3. CASE For direct measurements on fibre optics: OPM150VIGAFC For customized solutions, please contact us. Page 2 / 34

SPECIFICATIONS OF DETECTOR HEADS Detector Head Order Codes: Parameter INPUT Wavelength range Maximum measurable powers Conditions MIN 190 TYP OPM150IGA, OPM150VIGA AND OPM150VIGAFC OPM150G5 AND OPM150G10 OPM150UVS MAX 1100 MIN TYP 800 MAX 1550 MIN (IGA) 800 (VIGA) 400 TYP Units MAX (IGA) 1650 (VIGA) 1600 nm OD1, OD2 and OD3 refer to use with the respective attenuating filter Minimum measurable powers OUTPUT Connectors DB9 (detector head) and USB (1) kHz 30 1000 1, 10, 100, 1000, 10000 (2) S/s Accuracy ±6 % Reproducibility ±3 % ± 0.2 ± 0.4 dB Bandwidth Sampling rate 10 GUI-Control Direct...

ACCESSORIES We stock a wide range of accessories for this product to ensure absolute ease of use. Adapter C-Mount male thread Order code: 20.430.00005 Adapter C-Mount female thread Order code: 20.430.00006 Adapter lens tube system (1.035’’x40TPI) male thread Order code: 20.430.00004 Adapter lens tube system (1.035’’x40TPI) female thread Order code: 20.430.00007 Page 4 / 34

Filter holder for mounting loose filters. The thread length allows cascading several filter holders. Order code: 30.070.00017 CALIBRATED FILTERS Our filters are mounted in the filter holder depicted above and can be screwed onto the front end of the OPM150 detector head. Each filter is delivered with a calibration file which can be read into the OPM150 graphical software. In this manner, the calibration of the full system is guaranteed. Neutral density (ND) filters ND Filter, absorbing type OD1: Transmission = 10% Order code 30.070.00014 ND Filter, absorbing type OD2: Transmission = 1%...

QUICK GUIDE 1. Start the PC (Windows operating system). 2. Connect the OPM150 to a USB-Port. 3. Connect a OPM150 detector head to the OPM150 base unit. 4. Start the OPM150 software. 5. Select the appropriate wavelength. 6. Switch on the light source to be measured. 7. Start the measurement with one of the three measurement modes. „Windows“ is a registered trade mark of the Microsoft Corporation. Page 6 / 34

PRINCIPLES OF OPERATION The OPM150 measures optical power via a photodiode. Photodiodes are useful for power measurement in the visible and near infra-red due to their inherent sensitivity and speed of measurement. Photodiodes produce a current which is proportional to the incident light power over a wide dynamic range. The disadvantage when compared to calorimetric devices is the wavelength dependance. However, for use with monochromatic sources, the detector can be calibrated and the measured current corrected accordingly. The current from the photodiode is converted to a voltage through...

SOFTWARE INSTALLING THE DRIVER The following section describes the installation of the driver under Windows XP step by step. The driver allows direct access to the OPM150 as well as via a virtual COM-Port. Connect the OPM150 base module to a USB port of the computer. The new hardware is indicated in the task bar. Shortly thereafter, the hardware assistant will start to assist in installing the driver. Activate the radio button “No, not this time” and then click on the button “Next >”. Page 8 / 34

In the next step you will be advised to insert the installation CD into the CD-ROM drive. In the case that the PC has no CD-ROM drive (for example, a netbook), use the USB thumb drive provided with the system. Having done so, the radio button “Install from a list or specific location (Advanced)” should be activated and then click the button “Next >”. The next window prompts for the location of the driver. Activate the radio button “Search for the best driver in these locations” as well as the chek box “Include this location in the search”. Now click on the “Browse” button and select the...

The installation of the driver will begin and the files will be copied into the system. At the end of the installation, the following window will appear. Click the button “Finish” to complete the installation process. In the unlikely event that the installation is not successful, please restart the computer and repeat all steps. Immediately after this installation process, the VCP driver will be installed automatically. If this is not desired, the process can be aborted. Otherwise, please follow the installation assistant in an analogous manner as for the driver installation. Page 10 / 34

ACTIVATING THE VCP – OPTION The standard access mode for the OPM150 is direct, ie, the driver is nested into the programme. Alternatively, a COM-Port may be configured for access to the OPM150. Since this port is not an actual hardware port, but rather an emulated port for USB access, it is denoted “virtual COM-Port” (VCP). Activating and deactivating the VCP is performed using the hardware manager in the system properties control card. Click on the Windows “Start” button and then select “Configuration” → “System Properties” and select the icon “System”. Click the button “Device Manager”...