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DHANANJAY PATEL1,* , VINAY KUMAR SINGH1, U. D. DALAL1,*
- Dhananjay Patel, Electronics Department, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat - 395007, India
This paper addresses the generation of optical OFDM millimeter wave (MMW) signal to compensate the fiber chromatic dispersion and the Mach Zehnder Modulator (MZM) non linear distortion. Two optical OFDM signals generated by chirped and chirped free MZM are transmitted over a fiber. We compared the system performance by varying QAM modulation formats over a single mode fiber optic links extending up to 75kms. Our results show that, the chirped based OFDM signal transmission proves to be more robust against the chromatic dispersion of the fiber. Accordingly studies were carried out to reduce the impact of the non linearity of the MZM on system performance by appropriately selecting the drive power of the OFDM signal. Considering an Error Vector Magnitude (EVM) threshold of -14.5 dB as specified by the ECMA-368 standard, the optical receiver sensitivity of chirped based MMW signal generation is 2.6dB more as compared to chirped free operation..
Optical Orthogonal Frequency Division Multiplexing (OOFDM), Millimeter Wave generation (MMW), Optical Fiber Communication, Chromatic Dispersion and Mach Zehnder Modulator.
Submitted at: Feb. 26, 2016
Accepted at: June 7, 2017
DHANANJAY PATEL, VINAY KUMAR SINGH, U. D. DALAL, Chirped and chirped free optical OFDM MMW generation with direct detection to overcome fiber chromatic dispersion and MZM non linearity, Journal of Optoelectronics and Advanced Materials Vol. 19, Iss. 5-6, pp. 336-340 (2017)
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