Your roadmap · आपका रोडमैप
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Admission & first meetingप्रवेश और पहली मुलाकातEnquire at your nearest NDSS centre, meet the teacher, fix the batch time and get your study material.
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Part 1 of the syllabusपाठ्यक्रम भाग 1Unit-wise coaching with notes and doubt classes.
Unit 1: Optical Fibre WaveguidesUnit 2: Signal Degradation in FibresUnit 3: Optical Sources
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Part 2 of the syllabusपाठ्यक्रम भाग 2Unit-wise coaching with notes and doubt classes.
Unit 4: Photodetectors and ReceiversUnit 5: Fibre-Optic Links and Networks
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Unit tests & assignmentsयूनिट टेस्टRegular tests in the university / board pattern.
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Semester 7 exam (university / board)विश्वविद्यालय / बोर्ड परीक्षाPrevious papers and full revision before the exam.
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Online tests & resultऑनलाइन टेस्ट और रिज़ल्टTake the tests online; your marks and result show in your student login and at the centre.
Syllabus · पाठ्यक्रम
1 subject · 5 chapters · 23 topics
01Unit 1: Optical Fibre Waveguides
5 topics+
- Evolution and advantages of optical fibre communication
- Total internal reflection, acceptance angle and NA
- Step-index and graded-index fibres
- Modes, V-number and single-mode condition
- Fibre materials and fabrication
02Unit 2: Signal Degradation in Fibres
5 topics+
- Absorption and scattering losses
- Bending losses
- Attenuation in dB/km and low-loss windows
- Intermodal and intramodal (chromatic) dispersion
- Dispersion-shifted fibres
03Unit 3: Optical Sources
4 topics+
- Direct and indirect band gap materials
- LED structures and characteristics
- Laser diode principle, threshold current
- DFB lasers and modulation of sources
04Unit 4: Photodetectors and Receivers
4 topics+
- PIN photodiode
- Avalanche photodiode
- Quantum efficiency and responsivity
- Receiver noise and sensitivity
05Unit 5: Fibre-Optic Links and Networks
5 topics+
- Splices, connectors and couplers
- Power budget and rise-time budget
- Wavelength division multiplexing
- Optical amplifiers: EDFA
- SONET/SDH basics
About this course
You will be able to
- Explain light propagation in step-index and graded-index fibres using ray and mode theory
- Calculate numerical aperture, V-number and number of modes of a fibre
- Calculate attenuation and dispersion and explain their causes
- Compare LED and laser sources and PIN and APD detectors and calculate responsivity
- Prepare a power budget and rise-time budget for a point-to-point link
- Explain WDM, optical amplifiers (EDFA) and fibre splices and connectors
Who it is for
- B.Tech Electronics & Communication Engineering students of Semester 7 (AKTU)
- B.Tech EE / EI students who take this subject as an elective
- Students preparing for GATE ECE who want to revise this subject
What you need
- Electromagnetic field theory and analog / digital communication
- Semiconductor device basics
Online tests & result
Practice and unit tests online; marks and result show in your student login and at the centre.
Student login →
Questions
Which syllabus does the Optical Communication course follow?
It follows the current AKTU B.Tech (ECE) scheme, Semester 7. If your university or college uses a different scheme, the centre follows your own university syllabus.
Do you cover numericals and previous year questions?
Yes. Each unit is taught with solved numericals and AKTU previous-year questions.
