Manual Fiber Polarization Controllers is made by the principle of birefringence generated by optical fiber under the action of external force. The three rings are equivalent to λ/4, λ/2 and λ/4 wave plates respectively. The light wave passes through the λ/4 wave plate and is converted into linearly polarized light, and then the polarization direction is adjusted by the λ/2 wave plate. The polarization state of the linearly polarized light is changed to an arbitrary polarization state via a λ/4 wave plate. The delay effect caused by the birefringence effect is mainly determined by the cladding radius of the fiber, the radius of the fiber surround and the wavelength of the light wave.
Manual Fiber Polarization Controllers is made by the principle of birefringence generated by optical fiber under the action of external force. The three rings are equivalent to λ/4, λ/2 and λ/4 wave plates respectively. The light wave passes through the λ/4 wave plate and is converted into linearly polarized light, and then the polarization direction is adjusted by the λ/2 wave plate. The polarization state of the linearly polarized light is changed to an arbitrary polarization state via a λ/4 wave plate. The delay effect caused by the birefringence effect is mainly determined by the cladding radius of the fiber, the radius of the fiber surround and the wavelength of the light wave.
e.g.:
The fixed diameter of the polarization controller fiber ring is 56mm, and the single-mode fiber with a cladding diameter of 125µm is wound in it;
When λ=1550nm, and the number of loops loop=1, the ring is equivalent to a λ/2 wave plate;
When λ=1550nm, when the number of loops loop=3, the loop is equivalent to a 3λ/2 wave plate.
Take the use of 900um fiber and working wavelength of 1550nm as an example
Remove rubber stoppers A, B and C;
Tighten screws 1, 2, 3 and 4;
Loosen screws 5 and 6.
Figure 1 Front view of the polarization controller
Rotate the controller wave plates A, B and C to the front, as shown in Figure 2 and Figure 3
Figure 2 Rear View of Polarization Controller
Figure 3 Top view of polarization controller
Handle a length of single-mode fiber at least 1 meter long (do not twist);
Put one end of the optical fiber on the stopper A, press the stopper A, and tighten the screw 6;
Place the fiber in the groove of the wave plate, and wrap the ¼ wave plate fiber twice in the groove of the wave plate, taking care to ensure that the fiber cannot be twisted. Put the rubber stopper back to its original position.
Figure 4 Assembling the first fiber-optic wave plate
Place the optical fiber in the wave plate slot, and for ½ waveplate, wrap the optical fiber in the wave plate slot 4 times to ensure that the optical fiber is not twisted and the rubber stopper is put back in its original position.
Figure 5 Assembling the second fiber-optic wave plate
Place the fiber in the wave plate groove and wrap the ¼ wave plate fiber twice in the wave plate groove, making sure the fiber is not twisted and the rubber stopper is put back in place.
Figure 6 Assembly of the third fiber-optic wave plate
Place the optical fiber on the stopper B, press the stopper B, and tighten the screw 5
Figure 7 Fiber tail limit
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All products have 1-3 years warranty.(After the quality guarantee period began to charge appropriate maintenance service fee.)
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A: Box optronics can provide many kinds of Fiber Polarization Controllers.
Q: What is the optical connector you requirement?A: Box optronics can customize the optical connector according the requirement for free.
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