Lucent Technologies LambdaXtreme Alarm Messages And Trouble Clearing Manual page 392

OXC (Optical Cross-connect)
Devices that can switch optical signals between different optical fibers, without the need for
conversion to electrical signals.
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P Passive Branching Device
A device which divides an optical input into two or more optical outputs.
PCMCIA (Personal Computer Miniature Communications International Association)
An international standards body and trade association that establishes standards for Integrated
Circuit cards and promotes interchangeability among mobile computers where ruggedness, low
power, and small size were critical.
PCMCIA publishes the PC Card standard which contains all of the physical, electrical and
software specifications for the PC card technology. .
PCMCIA Adapter (Personal Computer Miniature Communications International Association)
Adapter
A slot on the Network controller or PC where the flash disk is inserted.
PD (Photodetector)
An optoelectronic transducer such as a PIN photodiode or avalanche photodiode.
PDU (Protocol Data Unit)
PDUs are used for the information exchange between equal protocol layers.
Peak Power Output
The output power averaged over that cycle of an electromagnetic wave having the maximum
peak value that can occur under any combination of signals transmitted.
Photodiode
A device that converts optical energy to electrical energy.
PID (Password Identification)
A word or character string recognized by automatic means that permits a user access to
protected storage, files, or input or output devices.
Pigtail
A short optical fiber permanently attached to a source, detector or other fiber optic device.
Plastic Clad Silica
Also called hard clad silica (HCS). A step-index fiber with a glass core and plastic or polymer
cladding instead of glass.
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G L O S S A R Y
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Lucent Technologies - Proprietary
See notice on first page
365-575-783R1.1
Issue 1, June 2002