A Filterless Generation of Optical Millimeter Wave Signal Based on Frequency 16-Tupling Using Cascaded Polarization Modulators

Abstract

Millimeter wave (MMW) frequencies are becoming vital as they bolster a large number of applications requiring higher data rates. In this paper, we have demonstrated a frequency multiplication technique based on external modulation for a 160 GHz MMW signal generation. The proposed scheme which uses a four-stage cascaded structure of polarization modulators proves to be a lucrative solution since the selected modulation index of 2.826 is phenomenally low. A precise choice of phase shifts between the cascaded stages ensures two eighth-order peaks spaced 160 GHz apart. This technique renders Radio Frequency Spurious Suppression Ratio and Optical Sideband Suppression Ratio of 45 and 65 dB, respectively. Simulation results are verified from a mathematical standpoint. The requirement of a Radio Frequency Local Oscillator with a higher frequency has been eliminated by a higher value of frequency multiplication factor.

KEYWORDS:

• EM propagation
• Millimeter wave signal
• OSSR
• Polarization modulators
• Radio frequency photonics
• RFSSR

ACKNOWLEDGEMENT

The authors thankfully acknowledge Dr. K. Esakki Muthu, assistant professor of ECE, University VOC. College of Engineering, Tuticorin, for his useful suggestions and discussions.

DISCLOSURE STATEMENT

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

M. Baskaran

M Baskaran completed the bachelor's degree in electronics and communication engineering from Madurai Kamaraj University, Tamil Nadu, India. He received the master's degree and doctoral degree in optical communication from Anna University, Tamil Nadu, India. He has 16 years of teaching experience and 6 years of research experience so far. He is presently working as an associate professor at Sri Sairam Engineering College, Chennai, India. His research interests include radio over fiber technologies, microwave photonics, and optical communication.

S. Sevagan

S Sevagan is working as an assistant professor at SRM Valliammai Engineering College, Chennai. He completed the BE in electronics and communication engineering, in 2011 at Anna University, Chennai. He did his MTech in laser and electro optical engineering, in 2013 and ME in communication systems at Anna University, Chennai. His areas of interest include optical communication, antennas, and RF & microwaves. Email: [email protected]

T. Sivasakthi

T Sivasakthi is working as an assistant professor in the Department of ECE, Sri SaiRam Engineering College and has teaching experience of more than 10 years. He had completed UG in electronics and communication engineering and PG in applied electronics. His area of interests includes signal processing, fiber bragg grating sensors, optical fiber communication. Email: [email protected]