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| 1 | Coupledstructure for wide-band EDFA with gain and noise figureimprovements from C to L-band ASE injection 显示文摘 | Bumki Min Hosung Yoon Won Jae Lee | 2000 | Pho-tonics Technology Letters2000，12，5： | 1 |
| 2 | Dynamics of cascaded Brillouin-Rayleigh scatterin in a distributed fiber Raman amplifier 显示文摘 | Park Kap-dong Min Bumki Kim Pihan | 2002 | Optics Letters2002，27，3： | 1 |
| 3 | Non-Hermitian chiral degeneracy of gated graphene metasurfaces显示文摘Non-Hermitian degeneracies,also known as exceptional points(EPs),have been the focus of much attention due to their singular eigenvalue surface structure.Nevertheless,as pertaining to a non-Hermitian metasurface platform,the reduction of an eigenspace dimensionality at the EP has been investigated mostly in a passive repetitive manner.Here,we propose an electrical and spectral way of resolving chiral EPs and clarifying the consequences of chiral mode collapsing of a non-Hermitian gated graphene metasurface.More specifically,the measured non-Hermitian Jones matrix in parameter space enables the quantification of nonorthogonality of polarisation eigenstates and half-integer topological charges associated with a chiral EP.Interestingly,the output polarisation state can be made orthogonal to the coalesced polarisation eigenstate of the metasurface,revealing the missing dimension at the chiral EP.In addition,the maximal nonorthogonality at the chiral EP leads to a blocking of one of the cross-polarised transmission pathways and,consequently,the observation of enhanced asymmetric polarisation conversion.We anticipate that electrically controllable non-Hermitian metasurface platforms can serve as an interesting framework for the investigation of rich non-Hermitian polarisation dynamics around chiral EPs. | Soojeong Baek Sang Hyun Park Donghak Oh Kanghee Lee Sangha Lee Hosub Lim Taewoo Ha Hyun Sung Park Shuang Zhang Lan Yang Bumki Min Teun-Teun Kim | 2023 | Light(Science & Applications)2023，12，5： | 1 |
| 4 | Dynamics of cascaded Brillouin-Rayleigh scattering in a distributed fiber Raman amplifier 显示文摘 | Kap-Dong Park Bumki Min Pihan Kim | 2002 | Optics Letters2002，27，3： | 1 |
| 5 | Flat ampli- tude equal spacing 798-channel Rayleigh-assisted Bril- louinlRaman multiwavelength comb generation in disper- sion compensating fiber 显示文摘 | Min Bumki Kim Pilhan Park Namkyoo | 2001 | IEEE Photonics Technology Letters2001，13，12： | 1 |
| 6 | Efficient formulation of Raman amplifier propagation equations with average power analysis显示文摘 | Bumki Min Won Jae Lee Namkyoo Park | 2000 | IEEE PTL2000，12，11： | 1 |
| 7 | Efficient formulation of Raman amplifier propagation equations with average power analysis显示文摘 | Bumki Min Won Jae Lee Namkyoo Park | 2000 | IEEE PTL2000，12，11： | 1 |
| 8 | Efficient formulation of Raman amplifier propagation equations with average power analysis显示文摘 | Bumki Min Won Jae Lee Namkyoo | 2000 | IEEE Photonics Technology Letter2000，12，11： | 1 |
| 9 | Efficient Formulation of Raman Amplifier Propagation Equa- tions with Average Power Analysis 显示文摘 | Bumki Min Won Jae Lee Namkyoo Park | 2000 | IEEE PHO- TONICS TECHNOLOGY LETTERS2000，12，11： | 1 |
| 10 | Efficient formulation of Raman amplifier propagation equations with average power analysis显示文摘 | Bumki Min Won Jae Lee Namkyoo Park | 2000 | IEEE Photon Technol Lett2000，12，11： | 1 |
| 11 | High-Q surfaceplasmon-polariton whispering-gallery microcavity 显示文摘 | Bumki Min Eric Ostby Volker Sorger | 2009 | Nature2009，457，： | 1 |
| 12 | Parametric oscillation of electromagnetic waves in momentum band gaps of a spatiotemporal crystal显示文摘Photonic crystals have revolutionized the field of optics with their unique dispersion and energy band gap engineering capabilities, such as the demonstration of extreme group and phase velocities, topologically protected photonic edge states, and control of spontaneous emission of photons. Time-variant media have also shown distinct functionalities, including nonreciprocal propagation, frequency conversion, and amplification of light.However, spatiotemporal modulation has mostly been studied as a simple harmonic wave function. Here, we analyze time-variant and spatially discrete photonic crystal structures, referred to as spatiotemporal crystals.The design of spatiotemporal crystals allows engineering of the momentum band gap within which parametric amplification can occur. As a potential platform for the construction of a parametric oscillator, a finite-sized spatiotemporal crystal is proposed and analyzed. Parametric oscillation is initiated by the energy and momentum conversion of an incident wave and the subsequent amplification by parametric gain within the momentum band gap. The oscillation process dominates over frequency mixing interactions above a transition threshold determined by the balance between gain and loss. Furthermore, the asymmetric formation of momentum band gaps can be realized by spatial phase control of the temporal modulation, which leads to directional radiation of oscillations at distinct frequencies. The proposed structure would enable simultaneous engineering of energy and momentum band gaps and provide a guideline for implementation of advanced dispersion-engineered parametric oscillators. | SEOJOO LEE JAGANG PARK HYUKJOON CHO YIFAN WANG BRIAN KIM CHIARA DARAIO BUMKI MIN | 2021 | Photonics Research2021，9，2： | 0 |
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