PMC-400RGB-H-1-28E/20-xxx

The main features of the fiber cable type PMC-400RGB-H-1-28E/20-xxx (also known as PMC-E-400RGB-3.5-NA013-1-APC.EC/OPC-xxx-P) include

Fiber
The fiber is a polarization-maintaning, single-mode Panda fiber, defined by its NA and its cut-off wavelength. The nominal NA is 0.13 and is specified by the fiber manufacturer. Additionally the effective numerical aperture NAe² is measured for each fiber batch by Schäfter + Kirchhoff. The fiber has an effective numerical aperture NAe² of 0.092 and a cut-off wavelength λ_co of 400 nm. Maximum wavelength is 640 nm. Besides the nominal cut-off wavelength λ_co, Schäfter + Kirchhoff also offers measured data for the cut-off wavelength for each individual fiber cable.

The fiber has a pure silica core for long-term stable low attenuation and high transmission.

The RGB fiber is designed for broadband applications. However, at long wavelength the fiber can be quite sensitive to disturbances, such as bending or stress. During the manufacturing process of RGB fiber cables additional measures are taken to guarantee a high performance even at high wavelengths. Additional tests are performed to document that the fiber performance is high over the whole wavelength range. Please note, that due to the large wavelength range, the values of the effective numerical aperture NAe² are noticeably different at the cut-off wavelength and at the max. wavelength. Please refer to the NAe² curve in the Downloads section.

Fiber cable
The fiber cable has a 900 µm buffer in black and a length of xx cm.

Fiber Connectors
The fiber cable is equipped with a fiber connector of type FC APC (8 deg polish, endcap, narrow key) at the one end and a fiber connector of type FC PC (0 deg polish, narrow key) at the other end. All of the fiber connectors of type FC assembled by Schäfter + Kirchhoff have an alignment index (key). The narrow key (type "R") fiber connector has an alignment index (key) of 2 mm width.

End Caps
The fiber is equipped with an end cap connector. This means that a short length of fiber (< 300 µm) without a core is spliced onto the polarization-maintaining fiber. Without a fiber core to confine the beam, the mode field diameter of the beam already starts to diverge within the fiber end cap, significantly reducing the power density at the fiber end-face.