Unit 9 Assignment: | Definitions

Unit 9 Definitions:
1) Forward Biased LED - a voltage applied to a circuit or device, especially a semiconductor device, in the direction that produces the larger current
2) Incoherent Light - Electromagnetic radiant energy not all of the same phase, and possibly also consisting of various wavelengths.
3) Laser - device for the creation, amplification, and transmission of a narrow, intense beam of coherent light
4) Output Pattern – Signal output made during an individual test
5) Output Pattern – Voltage output made by an individual object
6) Modulation Speed - the process of varying one or more properties of a periodic waveform, called the carrier signal (high frequency signal), with a modulating signal that typically contains information to be transmitted.
7) Core Diameter Mismatch – The initial core of a wire or cable is unsuitable for the made object
8) Current – The amount of power being produced within or by an object
9) PIN Photodiode – a diode with a wide, lightly doped 'near' intrinsic semiconductor region between a p-type semiconductor and an n-type semiconductor region.
10) Avalanche Photodiode – a highly sensitive semiconductor electronic device that exploits the photoelectric effect to convert light to electricity
11) Responsivity – measures the input–output gain of a detector system. In the specific case of a photodetector, responsivity measures the electrical output per optical input.
12) Optical Subassembly – subassemblies of a typical fiber optical receiver
13) Dynamic Range – the ratio between the largest and smallest possible values of a changeable quantity, such as in signals like sound and light
14) Operating Wavelength – In a waveguide, such as closed waveguide, an optical fiber, or a slab dielectric waveguide in an optical integrated circuit, the wavelength that (a) the guide is capable of transmitting, i.e., is capable of supporting over useful distances, (b) the waveguide is designed to support, or (c) a system, such as a fiber optic transmission system, uses.
15) Fiber Optic Coupler – a device used in optical fiber systems with one or more input fibers and one or several output fibers.
16) Optomechanical Switch – produces different optical paths from two optical path sections out of a plurality of optical path sections that are oriented in different spatial directions
17) Optical Attenuator – Component in a passive optical network
18) Optical Isolator – an optical component which allows the transmission of light in only one direction
19) Wavelength Division Multiplexing – a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths (i.e., colors) of laser light.
20) Passive Optical Network – a telecommunications network that uses point-to-multipoint fiber to the premises in which unpowered optical splitters are used to enable a single optical fiber to serve multiple premises.
21) FTTH – Fiber to the Home
22) FTTB – Fiber to the Building
24) FTTN – Fiber to the Node
25) Feeder Cable – a cable extending from the central office along a primary route (main feeder cable) or from a main feeder cable along a secondary route (branch feeder cable) and providing connections to one or more distribution cables.
26) Distribution Cable – Part of a FTTX PON
27) Drop Point - Part of a FTTX PON
28) Local Convergence Point – is the heart of the modern all-fiber access network (AFAN). It supports scaling of splitters, allows single-subscriber management, provides testing and troubleshooting access, and supports future technology migrations and updates.
29) Network Access Point – a public network exchange facility where Internet service providers (ISPs) connected with one another in peering arrangements
30) Network Interface Device - a device that serves as the demarcation point between the carrier's local loop and the customer's premises wiring.