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Figure 1:

Proposed high-speed DWDM link with a hybrid amplifier positioned in (A) post-, (B) pre-, and (C) symmetric configuration.
Proposed high-speed DWDM link with a hybrid amplifier positioned in (A) post-, (B) pre-, and (C) symmetric configuration.

Figure 2:

Analysis of power versus gain for symmetric, post-, and preamplifier configurations using a hybrid (SOA, EDFA, and Raman) amplifier.
Analysis of power versus gain for symmetric, post-, and preamplifier configurations using a hybrid (SOA, EDFA, and Raman) amplifier.

Figure 4:

Analysis of BER and length using a hybrid amplifier for pre-, post-, and symmetric configurations.
Analysis of BER and length using a hybrid amplifier for pre-, post-, and symmetric configurations.

Figure 5:

Analysis of wavelength versus gain for hybrid and SOA in symmetric, pre-, and post-amplifier configurations.
Analysis of wavelength versus gain for hybrid and SOA in symmetric, pre-, and post-amplifier configurations.

Figure 3:

Analysis of power versus gain for symmetric, post-, and preamplifier configurations using SOA.
Analysis of power versus gain for symmetric, post-, and preamplifier configurations using SOA.

Transmitter design parameters.

Parameter Value/description
Transmission band 1,540-1,549.9 nm
Channel spacing 0.1 nm
Optical transmission power 0.1-1 mW
Optical modulation External modulation (Mach–Zehnder modulator)
Data transmission rate 40 Gbps
Transmission medium Single-mode fiber (SMF)
Total channels 100

Gain (dB) comparison of hybrid and nonhybrid amplifier for different values of transmission power.

Hybrid amplifier Nonhybrid amplifier
Transmission power Pre- Post- Symmetric- Pre- Post- Symmetric-
0.1 mW 15.8 9.4 18.6 −4.7 −4.8 −2.6
1 mW 6.8 1 9.3 −4.9 −5.6 −3.7

BER comparison at different link range (kms).

Link range
Configuration 50 km 70 km 100 km
Pre- 10−7 10−5 10−3
Post- 10−5 10−4 10−2
Symmetric- 10−8 10−7 10−5

Gain (dB) variations of hybrid-amplified DWDM link.

Configuration Gain (dB) maximum Gain (dB) minimum Difference (dB)
Pre- 15.7 14.4 1.3
Post- 9.8 6.9 2.9
Symmetric- 18.3 11.8 6.5

Amplifier and receiver design parameters.

Parameter Value/description
Injection current (SOA) 0.05 Amp
Length—EDFA 50 meters
Length—Raman amplifier 10 kms
Pump power—EDFA 300 mW (forward type)
Pump signal—wavelength 980 nm
Pump power—Raman amplifier 100 mW
Detector type PIN
SMF attenuation (@1550 nm) 0.2 dB/km
eISSN:
1178-5608
Langue:
Anglais
Périodicité:
Volume Open
Sujets de la revue:
Engineering, Introductions and Overviews, other