Optical filtering with axial whispering gallery modes on the surface of tapered optical fibers

Han, Zhiyong; Fast, Semen S.; Klotz, Emile; Vatnik, Ilya D.; Churkin, Dmitry V.

doi:10.1088/1612-202x/ab8931

Cited by 3 publications

(2 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Microresonators with whispering gallery modes (WGMs) are attractive for various applications, including classical and non-classical ones [1,2]. Sensing [3][4][5] and biosensing [6,7], optical filtering and switching [8][9][10], frequency stabilization, and linewidth narrowing [11,12] are just a few of them. A possibility of developing a new class of optical sources with a controllable number of robust soliton pulses operating in self-starting regimes based on coupled resonators is discussed in [13], where stabilization is implemented by linear coupling without saturable absorption.…”

Section: Introductionmentioning

confidence: 99%

Optical Frequency Combs Generated in Silica Microspheres in the Telecommunication C-, U-, and E-Bands

et al. 2021

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

Optical Frequency Combs Generated in Silica Microspheres in the Telecommunication C-, U-, and E-Bands

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Whispering gallery mode (WGM) resonators with high Q-factors and a small mode volume providing efficient light-matter interaction are very attractive photonic elements for obtaining optical frequency combs for different applications [1][2][3][4][5][6][7][8][9], creating optical filters, switches, microlasers, sensors, and other miniature optoelectronic devices [10][11][12][13][14][15][16]. Microlasers in the two-micron range are potentially interesting for extensive application in remote chemical sensing, biomedicine, and atmosphere monitoring.…”

Section: Introductionmentioning

confidence: 99%

In-Band Pumped Thulium-Doped Tellurite Glass Microsphere Laser

2021

View full text Add to dashboard Cite

Microresonator-based lasers in the two-micron range are interesting for extensive applications. Tm3+ ions provide high gain; therefore, they are promising for laser generation in the two-micron range in various matrices. We developed a simple theoretical model to describe Tm-doped glass microlasers generating in the 1.9–2 μm range with in-band pump at 1.55 μm. Using this model, we calculated threshold pump powers, laser generation wavelengths and slope efficiencies for different parameters of Tm-doped tellurite glass microspheres such as diameters, Q-factors, and thulium ion concentration. In addition, we produced a 320-μm tellurite glass microsphere doped with thulium ions with a concentration of 5·1019 cm−3. We attained lasing at 1.9 μm experimentally in the produced sample with a Q-factor of 106 pumped by a C-band narrow line laser.

show abstract

Dispersion Tailoring and Four-Wave Mixing in Silica Microspheres with Germanosilicate Coating

et al. 2021

View full text Add to dashboard Cite

Optical whispering gallery mode microresonators with controllable parameters in the telecommunication range are demanded for diverse applications. Controlling group velocity dispersion (GVD) in microresonators is an important problem, as near-zero GVD in a broad wavelength range could contribute to the development of new microresonator-based light sources. We demonstrated theoretically near-zero dispersion tailoring in the SCL-band in combination with free-spectral range (FSR) optimization for FSR = 200 GHz and 300 GHz in silica glass microspheres with micron-scale germanosilicate coating. As an illustration of a possible application of such a GVD, we also performed a theoretical study of degenerate four-wave mixing (FWM) processes in the proposed microresonators for pumping in the SCL-band. We found that in some cases the generation of two or even three pairs of waves–satellites in a FWM process is possible in principle due to the specific GVD features. We also determined optimal microresonator configurations for achieving gradual change in the satellite frequency shift for the pump wavelengths in the SCL-, S-, CL-, C-, and L-bands. The maximum obtained FWM satellite tunability span was ~78 THz for a pump wavelength change of ~30 nm, which greatly exceeds the results for a regular silica microsphere without coating.

show abstract

Optical filtering with axial whispering gallery modes on the surface of tapered optical fibers

Cited by 3 publications

References 28 publications

Optical Frequency Combs Generated in Silica Microspheres in the Telecommunication C-, U-, and E-Bands

Optical Frequency Combs Generated in Silica Microspheres in the Telecommunication C-, U-, and E-Bands

In-Band Pumped Thulium-Doped Tellurite Glass Microsphere Laser

Dispersion Tailoring and Four-Wave Mixing in Silica Microspheres with Germanosilicate Coating

Contact Info

Product

Resources

About