Light rays can be used to transmit a huge amount of data, but there is a problem here – the light rays travel in straight lines.
EE4367 Telecom. 0000215042 00000 n Instead, the optical cables are designed such that they bend all the light rays’ inwards (using TIR). 0000211513 00000 n 0000006407 00000 n 0000210966 00000 n 0000206322 00000 n 0000006451 00000 n 0000198202 00000 n
These coatings are usually colored to identify individual fibers in a multi-fibers cable.The fiber loss mean's wasting of energy (power) in fiber. 0000209901 00000 n If the light follows other paths then a stable wave will not propagate through the fiber and hence there will be no mode.The optical fibers are typed according to the following modes:This fiber works in a very simplified way. That portion which surrounds the core is called cladding. The optical fiber is a waveguide used for transmission of light. They provide power Electronic I/P and Optical O/P signals.There are actually the connectors between the light source and fiber may have different forms.This depends on application, requirements, data format and the light source.In some transmitters the I/P Electrical signals are electronically processed to put them into of suitable from to drive the light source.It Monitors the O/P of the LASER and provides feedback to the drive CKT so that the O/P power remains stable.The characteristic of semi-conductor LASER changes in temperature. If PThe unit uses for less will be "decibels per kilometer" because the loss is increases mostly with fiber length.
The step-index multi mode fibers collect light easily but have a limited bandwidth.These are called graded-index fibers because in these fibers the refractive index changes gradually from the core to the cladding and at the boundary between the core and cladding, the change is abrupt. Hence, such a point is called as A light ray, if passed into a glass, at such condition, it is totally reflected back into the glass with no light escaping from the surface of the glass.Depending upon the material composition of the core, there are two types of fibers used commonly. - EH and HE Modes. 0000204112 00000 n • Optical fibers are widely used in Fiber-optic communications, which permits transmission over longer distances and at higher bandwidths (data rates) than other forms of communication.
B�����Y#r%{������ϗ������?���@�p���et)��ιH��C��(\$&b$bp��cb�ÔQ��f]ʁ4.���p!���&P8�Fwa� P��}����|v�):p��w�Bw�u]h�u�%Ø���QK��sP����~�_�Nf7��?��:䔌�953��i�� )��0Z�K����ɋ+ݺ]��OpL��,�J���Su_���q@3ղHL��t���;�HV[p�d������hx�k=��w���.�g&(�y�&��*�t� �뭝���j�*'���e�H#9{H�/e�;�� ��rJG�t�%Cb�> QMB�c1����^O@N�e��9�B�"y�CK/��H)�wBKFK>`/�(��ULjn�z�x��Xo�=%�'�J�rWv�tUov��f���a,@ꮷ�����Yl�" �D��M�^��e���1����B�F0���O���I��R��r>����r>�pK��b��)���f��P�%s,����-�i�%9w#���(.��9�c/��r�t@�K�茺߯��SȐ�8ϴ�mit}��6 OVERVIEW OF OPTICAL FIBER COMMUNICATION: Introduction, Historical development, general system, advantages, disadvantages, and applications of optical fiber communication, optical fiber waveguides, Ray theory, cylindrical fiber (no derivations in article 2.4.4), single mode fiber, cutoff wavelength, mode field diameter. Light was used as a medium for communication in the earliest days. - The mode can be EH or HE depending upon which component contribute more to the axial direction. Let us take a look at … Fiber optics plays an important role in the field of communication to transmit voice, television and digital data signals fro … 0000202213 00000 n The fibers are designed such that they facilitate the propagation of light along with the optical fiber depending on the requirement of power and distance of transmission.