Citation

Manimaran,, R and Abdul-Rashid, , H.A (2008) SNR improvements in self-heterodyne detection technique for laser linewidth measurements. ASM Science Journal, 2 (2). pp. 133-137. ISSN 1823-6782

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Abstract

This paper proposes a signal-to-noise-ratio (SNR) improvement by using an external phase modulator that allowed flexible control of the spectrum amplitude by varying the modulation index for linewidth measurements. Compared with the conventional self-heterodyne detection technique, the results obtained in this study showed an SNR improvement as high as 10 dB. This 10 dB improvement in SNR could help to reduce the usage of a particular length of a single mode fibre (normally about 50 Km) when measuring a linewidth in the region of 10 kHz.

Item Type:	Article
Subjects:	Q Science > Q Science (General)
Depositing User:	Ms Rosnani Abd Wahab
Date Deposited:	04 Feb 2013 03:29
Last Modified:	04 Feb 2013 03:29
URII:	http://shdl.mmu.edu.my/id/eprint/3832

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