Analog Fiber Optics: Pragmatic Considerations beyond the Textbook
نویسندگان
چکیده
This report discusses the use of AlGaAs lasers and LEDs as optical sources for a multimode fiber-optic link that uses analog modulation. It is well known that the limited linearity of these sources makes digital modulation a preferable method to send information. However, many factors determine how a portion of an information transfer system is constructed or retrofitted including previous investments in (Continues)
منابع مشابه
Analog and Digital Modulation Formats of Optical Fiber Communication within and beyond 100 Gb/s: a Comparative Overview
For transferring data to increase performance and implementation simplicity different analogue and digital techniques are used in fiber optic communication channel. Different digital modulation formats maximizes spectral efficiency and also improves tolerance to transmission impairments. This paper reviews a comparative analysis for the different digital modulation formats within 100Gb/s and be...
متن کاملSystem Analysis, Component Selection, and Testing Considerations for 1310 nm Analog Fiber-Optic CATV Applications
This application note will present a detailed analysis of typical 1310 nm, analog, fiber-optic networks used in CATV systems applications. In the analysis, system calculations and data will be presented that demonstrate the effects of device characteristics on system performance. The laser transmitter, fiber, and optical receiver parameters will be discussed. It will be shown how incorrect devi...
متن کاملBandwidth compression optical processor using chirped fiber Bragg gratings
Chirped fiber Bragg gratings are used as low-loss, dispersion compensation modules for telecommunications applications. Here we use them to make an optical processor that compresses the bandwidth of electronic signals before digitization by an analog-to-digital converter. ©2007 Optical Society of America OCIS codes: (230.0250) Optoelectronics, (060.2360) Fiber optics and optical communications ...
متن کاملPragmatic Representations in Iranian High School English Textbooks
Owing to the growing interest in communicative, cultural and pragmatic aspects of second language learning in recent years, the present study tried to investigate representations of pragmatic aspects of English as a foreign language in Iranian high school textbooks. Using Halliday’s (1978), and Searle’s (1976) models, different language functions and speech acts were specifically determined and...
متن کاملIranian EFL Teachers' and Students' Perceptions towards the First Grade High School English Textbook (Vision1)
In countries where textbooks are considered as the main source of teaching/learning process, textbook evaluation seems to be inevitable and necessary. The current study aimed at evaluating the new English textbook entitled “Vision 1”, developed for the Iranian first grade high school students. To achieve this goal, two groups of participants took part in the study. They consisted of 30 teachers...
متن کامل