Measurement of Second Harmonic Distortion of the Detected Signal in an IM-DD Fiber Optic Link when the input IM is second harmonic contaminated

Authors

  • Chiranjib Ghosh Visva-Bharati University
  • Taraprasad Chattopadhyay Visva-Bharati University

DOI:

https://doi.org/10.4302/photon.%20lett.%20pl.v7i3.580

Abstract

In this letter, we have measured second harmonic distortion of the detected optical signal in an IM-DD fiber optic link when the input intensity modulation RF signal contains a small amount of second harmonic distortion. The plot of output vs. input second harmonic distortion is linear. The output second harmonic distortion is smaller than the input second harmonic distortion. This is due to the existence of a small negative slope in the modulation response of the FP laser diode over the 100MHz÷200MHz frequency band.

Full Text: PDF

References
  1. G. Qazi, A.K. Sharma, H.N. Shah, M.-u.-din, "Performance investigation on harmonic distortion and inter-modulation distortion induced degradation for a single- and two-tone IM-DD SCM optical link", Optik 125, 2148 (2014). CrossRef
  2. G. Qazi, A.K. Sharma, H.N. Shah, M.-u.-din, "Investigation on inter-modulation products (IMPs) for IM-DD SCM optical links", Optik 125, 1629 (2014). CrossRef
  3. G. Qazi, A.K. Sharma, H.N. Shah, M.-u.-din, "Performance investigation on clipping and RIN induced degradation for a single- and two-tone IM-DD SCM optical link", Optics Comm. 319, 178 (2014). CrossRef
  4. V. Sharma, "Simulative investigation of nonlinear distortion in single- and two-tone RoF systems using direct- and external-modulation techniques", Optik 121, 1545 (2010). CrossRef
  5. J.H. Schaffner,W.B. Bridges, "Intermodulation distortion in high dynamic range microwave fiber-optic links with linearized modulators", J. Lightwave Techn. 11, 3 (1993). CrossRef
  6. L. Roselli,V. Borgioni, F. Zepparelli, M. Ambrosi, M. Comez, P. Faccin, A. Casini, "Analog laser predistortion for multiservice radio-over-fiber systems", J. Lightwave Techn. 21, 1211 (2003). CrossRef
  7. A.J. Rainal, "Limiting distortion of CATV lasers", J. Lightwave Techn. 14, 474 (1996). CrossRef

Author Biographies

Chiranjib Ghosh, Visva-Bharati University

Research scholar

Taraprasad Chattopadhyay, Visva-Bharati University

Professor of Physics, SMIEEE

Department of Physics

 

Downloads

Additional Files

Published

2015-09-30

How to Cite

[1]
C. Ghosh and T. Chattopadhyay, “Measurement of Second Harmonic Distortion of the Detected Signal in an IM-DD Fiber Optic Link when the input IM is second harmonic contaminated”, Photonics Lett. Pol., vol. 7, no. 3, pp. pp. 84–86, Sep. 2015.

Issue

Vol. 7 No. 3 (2015)

Section

Articles

License

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).