Make sure you do not tighten the screws too much or you will break the secondary mirror holder. It happened to us once and we had to completely replace the holder.

Microscope objectives are a key component of a microscope that are used to magnify and resolve the specimen being viewed.

Start in the front of the telescope. This is where the secondary mirror is located. What you want to do is tighten or loosen the three tiny screws that are just in the middle of the spider veins.

Those knobs work exactly like the screws behind the secondary mirror. Your goal here is to turn each knob until the laser is bounced back to the center of the bullseye, visible on the laser collimator. This is why it is important to attach it facing toward the back of your scope!

Collimation definition in radiography

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Collimatinglens

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The ODM module, which works with the MTS-6000 and MTS-8000 base units, combines the following measurements in a single plug-in module: chromatic dispersion (CD), polarization-mode dispersion (PMD), and attenuation profile (AP). For CD measurement, this module uses the patented phase-shift method, which ensures fast and precise measurement results. The fiber can be characterized across the entire wavelength range from 1260 nm to 1640 nm.

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Go to the back of the telescope. You do not need any tools for this, so put the screwdriver in a safe place and simply use your fingers.

Collimating a telescope is pretty easy, especially if using a laser, but first-timers might get confused by this simple process and end up breaking one of their mirrors (yes, we did).

We decided to make this tutorial, as well as a video (which you can find at the end of this post). As for most of our tutorials, this will be quick and straight to the point!

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Oct 3, 2024 — In a polarized light microscope, a polarizer intervenes between the light source and the sample. Thus, the polarized light source is converted ...

Welcome to LASER COMPONENTS Germany GmbH, your expert for photonics components. Each product in our wide range of fiber technologies, detectors, laser diodes, laser modules, optics, and more is worth every Euro (€/EUR). Our solutions cover all conceivable areas of application: from sensor technology to medical technology. You can reach us here:

If you just bought a laser collimator, please make sure it is collimated! You can do that by placing it on a table not too far from a bright wall, and turning it on. Then, slowly roll the laser and see if there is any suspicious movement in the red dot on your wall. It should not go up or down, but just sideways. You can also attach it to your telescope and rotate it while it is on while watching the dot on the mirror. The dot should not move at all.

How does it work? Each screw, when being tightened, pushes the secondary mirror, giving it a different angle and so bouncing the laser in a different direction.

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If optical fibers are damaged by internal or external influences, the fiber will become birefringent (e.g., when bent or in a misaligned fiber core). The two perpendicular polarization planes have different running speeds, and the pulse broadens. The PMD is a statistical value that can change due to external influences such as a shift, mechanical strain, or temperature fluctuations.

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Attach the laser collimator to the telescope, just where the eyepiece or camera would go. Make sure the target drawn on the device is facing toward the back of the telescope.

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In optical telecommunications applications, a light pulse consists of several wavelengths and their respective runtimes (group velocity); therefore, the determination of dispersion is crucial, for example,

The measurement of polarization-mode dispersion is the most critical parameter to consider when having a fiber approved for the transmission of high data rates. The higher the data rate to be transmitted, the more critical this value becomes.

In an optical fiber, chromatic dispersion refers to different runtimes for different wavelengths. They lead to a broadening of the pulse and ultimately a restriction of the transmission range of the optical fiber. Chromatic dispersion is the dominant dispersion in single-mode fibers – it is a material property.

The transmission quality of high-speed optical networks is affected by dispersion. Dispersion refers to the degradation of the transmission signal caused by spectral and polarization effects in the optical fiber.The MTS-6000 and MTS-8000 measurement devices and the corresponding measurement module are used to determine dispersion.

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The PMD plug-in module for the MTS-6000 and MTS-8000 base units works with the fixed polarization filter method (fixed analyzer) standardized by the ITU-T, IEC, and TIA/EIA. Using the PMD module, the PMD runtimes and the PMD coefficient can be measured and the second-order PMD calculated. This unit can be combined with different handheld broadband light sources.