Phase-mismatch dependence of the four-wave mixing effect in semiconductor optical amplifiers
The phase-mismatch effect due to polarization-dependent mode confinement factor has been shown to be not a crucial problem in semiconductor optical amplifiers (SOAs) and is usually not accounted for. The phase-mismatch four-wave mixing (FWM) process in SOA devices is experimentally reported. The r...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/585/ http://eprints.uthm.edu.my/585/1/DNJ9219_acc94dedea16bca8a8b5f0c8bf3ff8a8.pdf |
| Summary: | The phase-mismatch effect due to polarization-dependent mode confinement factor has been shown to be not a
crucial problem in semiconductor optical amplifiers (SOAs) and is usually not accounted for. The phase-mismatch
four-wave mixing (FWM) process in SOA devices is experimentally reported. The results reveal a sinc-like
behavior in the intensity of FWM conjugate as a function of wavelength separation between transverse electric
(TE)/transverse magnetic (TM) pumps due to induced confinement factors difference. Efficient FWM occurred
for a detuning shift of about 500 GHz, limited by phase-mismatch conditions and determined by coherence length
required for low and high frequencies to complete a full phase-match cycle. Phase-match FWM with an infinity
coherence length can be fulfilled by proper alignments of co-polarizedTE/TMmodes of input waves with respect to
the birefringent axes of the device structure. |
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