Novel frequency shift keying modulation based on fiber Bragg gratings and intensity modulators

doi:10.1007/s12200-015-0530-y

Front. Optoelectron.

2016, Vol. 9

Issue (4) : 616-620 https://doi.org/10.1007/s12200-015-0530-y

RESEARCH ARTICLE

Novel frequency shift keying modulation based on fiber Bragg gratings and intensity modulators

Liu YANG,Fengguang LUO(

)

National Engineering Laboratory for Next Generation Internet Access System, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China

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Abstract

This paper proposed and investigated a novel frequency shift keying (FSK) modulation based on two fiber Bragg gratings (FBGs) and two intensity modulators. Then the transmission of 10 Gbit/s FSK signal after a 50 km single mode fiber (SMF) was studied in this paper. The power penalty at the bit error rate (BER) of 10⁻⁹ was below 0.1 dB. The FSK modulation system can be applied to optical transmission system

Keywords fiber Bragg grating (FBG) frequency shift keying (FSK) modulation mode intensity modulator

Corresponding Author(s): Fengguang LUO

Just Accepted Date: 22 October 2015 Online First Date: 20 November 2015 Issue Date: 29 November 2016

Cite this article:

Liu YANG,Fengguang LUO. Novel frequency shift keying modulation based on fiber Bragg gratings and intensity modulators[J]. Front. Optoelectron., 2016, 9(4): 616-620.

URL:

https://academic.hep.com.cn/foe/EN/10.1007/s12200-015-0530-y
https://academic.hep.com.cn/foe/EN/Y2016/V9/I4/616

Fig.1 Architecture of FSK modulation system. CW: continuous wave, FBG: fiber Bragg grating, ATT: attenuator, EDFA: erbium doped fiber amplifier, DCF: dispersion compensation fiber. SMF: single mode fiber, FSK: frequency shift keying

Fig.2 Architecture of integrated modulator

Fig.3 (a)−(d) show the optical spectrum of the point A, B, C, D, respectively; (e) shows the eye-diagram of 10 Gb/s FSK signal at received unit; (f) shows the eye diagram of FSK signal without 10 km DCF

Fig.4 Frequency of sine wave versus the BER of FSK signal

Fig.5 BER of FSK signal versus the time delay of two optical waves

Fig.6 BER of FSK signal versus the different amplitude between the upper and lower paths

Fig.7 Received power versus the BER of FSK signal. BTB: back to back

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