Manual Fiber Polarization Controllers

Product Description

1. Introduction of Manual Fiber Polarization Controllers

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.

2. Package drawing of Manual Fiber Polarization Controllers

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.

3. Assembly method of Manual Fiber Polarization Controllers

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

4. Assembly Fiber of Manual Fiber Polarization Controllers

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

5. Deliver,Shipping And Serving of Manual Fiber Polarization Controllers

All products have been tested before shipping out;

All products have 1-3 years warranty.(After the quality guarantee period began to charge appropriate maintenance service fee.)

We appreciate your business and offer an instant 7 days return policy. (7 days after receiving the items);

If the items you purchase from our store are not of perfected quality, that is they don‘t work electronically to manufacturers specifications, simply return them to us for replacement or refund;

If the items are defective, please notify us within 3 days of delivery;

Any items must be returned in their original condition to qualify for a refund or replacement;

The buyer is responsible for all the shipping cost incurred.