It should be understood that the term “channels” is used broadly herein to describe {HEAD ~ bore holes}, V grooves, or other known structure for holding {TAIL ~ a fiber} 
It should be understood that the term “ channels ” is used broadly herein to describe { HEAD ~ bore holes } , V grooves , or other known structure for holding { TAIL ~ a fiber }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL