Back to Search
Start Over
Optical Frequency Combs Generated in Silica Microspheres in the Telecommunication C-, U-, and E-Bands
- Source :
- Photonics, Vol 8, Iss 345, p 345 (2021), Photonics, Volume 8, Issue 9
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- Optical frequency combs (OFCs) generated in microresonators with whispering gallery modes are demanded for different applications including telecommunications. Extending operating spectral ranges is an important problem for wavelength-division multiplexing systems based on microresonators. We demonstrate experimentally three spectrally separated OFCs in the C-, U-, and E-bands in silica microspheres which, in principle, can be used for telecommunication applications. For qualitative explanation of the OFC generation in the sidebands, we calculated gain coefficients and gain bandwidths for degenerate four-wave mixing (FWM) processes. We also attained a regime when the pump frequency was in the normal dispersion range and only two OFCs were generated. The first OFC was near the pump frequency and the second Raman-assisted OFC with a soliton-like spectrum was in the U-band. Numerical simulation based on the Lugiato–Lefever equation was performed to support this result and demonstrate that the Raman-assisted OFC may be a soliton.
- Subjects :
- Physics::Optics
Soliton (optics)
Multiplexing
Physics::Geophysics
Four-wave mixing
Nonlinear Sciences::Adaptation and Self-Organizing Systems
silica microsphere
Dispersion (optics)
Radiology, Nuclear Medicine and imaging
Applied optics. Photonics
Instrumentation
Mixing (physics)
Physics
Computer simulation
Quantitative Biology::Neurons and Cognition
business.industry
Degenerate energy levels
Atomic and Molecular Physics, and Optics
TA1501-1820
Raman OFC
optical frequency comb (OFC)
Whispering-gallery wave
four-wave mixing
Telecommunications
business
soliton-like spectrum
Subjects
Details
- Language :
- English
- ISSN :
- 23046732
- Volume :
- 8
- Issue :
- 345
- Database :
- OpenAIRE
- Journal :
- Photonics
- Accession number :
- edsair.doi.dedup.....3086dde790479d9eb76071a78e658254