Effect of Laser Bias Current to the Third Order Intermodulation in the Radio over Fibre System

Author

Yaakob, S. ; Wan Abdullah, W.R. ; Osman, M.N. ; Zamzuri, A.K. ; Mohamad, R. ; Yahya, M.R. ; Awang Mat, A.R. ; Mokhtar, M.R. ; Abdul Rashid, H.A.

Author_Institution

TM R&D Sdn Bhd, UPM-MTDC, Selangor

fYear

2006

fDate

12-14 Sept. 2006

Firstpage

444

Lastpage

447

Abstract

Third order intermodulation (IM₃) can cause non-linearity effects which result in interference and crosstalk between the subcarriers in radio over fibre (ROF) transmissions. This paper presents the experimental results of the effect of varying the magnitude of the laser bias current on the IM₃ in an ROF system with direct modulation. We also investigate the behaviour of the system spurious free dynamic range (SFDR) with the bias current variation. The results show that there will be an optimum bias current range for a given range of the radio frequency (RF) input power in order to minimise the IM₃ effect and obtain the best possible SFDR for the system

Keywords

optical crosstalk; radio-over-fibre; crosstalk; interference; laser bias current effect; laser nonlinearity; microwave photonics; nonlinearity effects; radio frequency; radio over fibre transmissions; system spurious free dynamic range; third order intermodulation; Fiber lasers; Fiber nonlinear optics; Intensity modulation; Masers; Multimedia systems; Optical crosstalk; Optical fibers; Optical modulation; Radio frequency; Semiconductor lasers; Laser Nonlinearity; Microwave Photonics; Radio over fibre; Third order intermodulation;

fLanguage

English

Publisher

ieee

Conference_Titel

RF and Microwave Conference, 2006. RFM 2006. International

Conference_Location

Putra Jaya

Print_ISBN

0-7803-9745-2

Electronic_ISBN

0-7803-9745-2

Type

conf

DOI

10.1109/RFM.2006.331123

Filename

4133638