Arranging opening time, backbeam height, tension, opening Angle, drafting, reed-in reasonably were adopted in weaving process. These practice ensures no loop and enhance weaving efficiency.
Then you send laser light through a beam splitter to divide the beam between the two arms, and let the light bounce back and forth a few times before returning to the beam splitter.
然后你通过分光器发射一束激光,让光线在两条边不断反射再回到分光器。
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If the two arms have identical lengths, then interference between the light beams returning to the beam splitter will direct all of the light back toward the laser.