| numerical aperture (NA) |
NXX |
NXX |
NXX |
Nyquist, Harry (1889–1976) |
| Nyquist theorem |
NZDF (Non Zero Dispersion-Shifted Fiber) |
O |
OADM (Optical Add/Drop Multiplexer) |
OAM&P (Operations, Administration, Management, and Provisioning) |
| O&M (Operations and Maintenance) |
O-Band (Original Band) |
oblique |
OBRA 93 |
obsessive compulsive disorder (OCD) |
| obtuse |
OC-192 |
OC-48 |
OC-48 |
OC-48 |
| OCC (Other Common Carrier) |
OCD (Obsessive Compulsive Disorder) |
OCD (Obsessive Compulsive Disorder) |
OC (Optical Carrier) |
octet |
| octothorpe |
OD (Outside Diameter) |
ODU (Optical Data Unit) |
OEM (Original Equipment Manufacturer) |
OEO (Optical-Electrical-Optical) |
| OFC (Optical Fiber, Conductive) |
OFCP (Optical Fiber, Conductive, Plenum) |
OFCR (Optical Fiber, Conductive, Riser) |
OFDM (Orthogonal Frequency Division Multiplexing) |
offered load |
| off-hook |
off-hook voice announce |
off-premises extension (OPX) |
off-premises station (OPS) |
offset quadrature phase shift keying (OQPSK) |
| offshoring |
OFN (Optical Fiber, Nonconductive) |
OFNP (Optical Fiber, Nonconductive, Plenum) |
OFNR (Optical Fiber, Nonconductive, Riser) |
OH |
| Ohm, Georg Simon (1787–1854) |
Ohm’s Law |
Ohm’s Law |
OLT (Optical Line Terminal) |
OLT (Optical Line Terminal) |
| Omnibus Budget Reconciliation Act of 1993 (OBRA 93) |
OMR (Optical Mark Recognition) |
ones density |
on-hook |
ONT (Optical Network Terminal) |
| ONU (Optical Network Unit) |
OOO (Optical-Optical-Optical) |
opaque OXC (opaque Optical CROSS-Connect) |
open circuit |
open-loop algorithm |