Route-asymmetrical light transmission of a fiber-chip-fiber optomechanical system

Abstract

In this paper, we proposed and experimentally demonstrated a route-asymmetrical light transmission scheme based on the thermal radiative effect, which means that forward and backward propagations of an optical device have different transmittances provided they are not present simultaneously. Employing a fiber-chip-fiber optomechanical system, our scheme has successfully achieved a broad operation bandwidth of at least 24 nm and an ultra-high route-asymmetrical transmission ratio (RATR) up to 63 dB. The route-asymmetrical device has been demonstrated effectively with not only the continuous-wave (CW) light but also 10 Gbit/s on-off-keying (OOK) digital signals. Above mentioned unique features can be mostly attributed to the significant characteristics of the thermal radiative effect, which could cause a fiber displacement up to tens of microns. The powerful and significant thermal radiative effect opens up a new opportunity and method for route-asymmetrical light transmission. Moreover, this research may have important applications in all-optical systems, such as the optical limiters and ultra-low loss switches.

Keywords

route-asymmetrical light transmission / thermal radiative effect / optomechanical system / route-asymmetrical transmission ratio (RATR)

Optical metasurfaces, composed of planar arrays of sub-wavelength dielectric or metallic structures that collectively mimic the operation of conventional bulk optical elements, have revolutionized the field of optics by their potential in constructing high-efficiency and multi-functional optoelectronic systems with a compact form factor. By engineering the geometry, placement, and alignment of its constituent elements, an optical metasurface arbitrarily controls the magnitude, polarization, phase, angular momentum, or dispersion of incident light. The study of metasurface now spans various multidisciplinary fields in both fundamental research on light-matter interaction [1–3], and emerging applications from solid-state LiDAR [4,5] to compact imaging, spectroscopy, and quantum optical devices [6–11]. High-performance metasurface devices have been experimentally demonstrated over the entire optical spectrum from the deep ultraviolet to the terahertz (THz) [12–16], and have been employed to manipulate optical waves in both spatial and temporal domains [17–21].

This special issue on “Recent Advances in Optical Metasurfaces” includes five review articles and five research articles, covering various topics ranging from metasurface design to practical applications. Qiu et al. [22] provide a comprehensive review of the fundamentals and applications of spin-decoupled Pancharatnam−Berry (PB) metasurfaces. Different from traditional PB-phase-based metasurfaces which impinge phase modulations with opposite signs onto the left-handed and right-handed circularly polarized light, the spin-decoupled PB metasurfaces release the above spin-locked limitation and allow independent and arbitrary control over orthogonal circular polarizations. The recent development of bianisotropic metasurfaces has allowed versatile control over the state of polarization and propagation direction of light. Xiong et al. [23] discuss the electromagnetic properties of photonic bianisotropic structures using the finite element method. The authors show that the vector wave equation with the presence of bianisotropy is self-adjoint under the scalar inner product and propose a balanced formulation of weak form in the practical implementation that outperforms the standard formulation in finite element modeling. Realizing active devices with adjustable functionalities is of great interest to the metasurface research community. Bi et al. [24] review the physical mechanisms and device applications of magnetically controllable metasurfaces. Magnetic field manipulation has advantages of ultra-fast response, non-contact and continuous adjustment, thus paving the way toward realizing multi-functional and dynamic metasurface-based devices and systems.

Several typical as well as emerging applications of the metasurface technology, are covered by this special issue. Fu et al. [25] give a comprehensive review of metalenses, tiny planar imaging devices enabled by metasurface technology. The article covers the basic phase modulation techniques, design principles, characterization methods, and functional applications of metalenses. Although a metalens might not fully compete with a conventional lens in terms of imaging quality at the current stage, it possesses unique advantages in terms of multi-dimensional and multi-degree-of-freedom control over an incident light, thus facilitating novel functionalities that are extremely difficult or even impossible to implement using conventional technology. The electromagnetic absorber is another typical application of metasurface technology. Gandhi et al. [26] propose a polarization-insensitive metasurface absorber operating in the THz regime. The device consists of metal-dielectric-metal resonators and exhibits absorption greater than 90% over the 2.54 to 5.54 THz range. In recent years, edge detection using metasurfaces has raised a significant interest and could find promising applications in all-optical computing and artificial intelligence. Wan et al. [27] review the development of dielectric metasurfaces for spatial differentiation and edge detection. The article focuses on the underlying principles of dielectric metasurfaces as first- or second-order spatial differentiators and their applications in biological imaging and machine vision.

Non-diffractive beams are highly desired for a number of applications, including biomedical imaging, particle manipulation, and material processing. Liu et al. [28] investigate dual non-diffractive THz beam generation using dielectric metasurfaces. The authors design and experimentally implement Bessel beams and abruptly autofocusing beams, two representative kinds of non-diffractive beams with dramatically opposite focusing properties. With its compact footprint and multiple functionalities, metasurface offers new possibilities in constructing high-performance optical sensors. Ye et al. [29] introduce an ultra-sensitive optical sensing platform based on the parity-time-reciprocal scaling (PTX)-symmetric non-Hermitian metasurfaces. Such devices leverage exotic singularities, such as the exceptional point and the coherent perfect absorber-laser point, to significantly enhance the sensitivity and detectability of photonic sensors. Ren et al. [30] propose a U-shaped THz metamaterial with polarization-sensitive and actively-controllable electromagnetically induced transparency, which could find useful applications in tunable integrated devices such as biosensors, filters, and THz modulators. Realizing large-scale and low-cost fabrication of metasurface could greatly facilitate the technology’s practical applications. Oh et al. [31] review the development of nanoimprint lithography for high-throughput fabrication of optical metasurfaces. The authors elaborate various imprint methods for scalable fabrication of metasurfaces and share their perspectives on the technology’s future development.

We hope that this special issue on “Recent Advances in Optical Metasurfaces” could provide useful information for metasurface researchers and inspire new ideas for their future exploration. We thank all authors for their contribution to this special issue, and reviewers for their valuable comments. In the end, we would like to express sincere gratitude to the editors of Frontiers of Optoelectronics for providing us such an excellent opportunity to put together this special issue and their invaluable assistance along the way.

References

[1] Bi L, Hu J, Jiang P, Kim D H, Dionne G F, Kimerling L C, Ross C A. On-chip optical isolation in monolithically integrated non-reciprocal optical resonators. Nature Photonics, 2011, 5(12): 758–762

[2] Shoji Y, Mizumoto T, Yokoi H, Hsieh I, Osgood R M. Magneto-optical isolator with silicon waveguides fabricated by direct bonding. Applied Physics Letters, 2008, 92(7): 071117-1–071117-3

[3] Espinola R L, Izuhara T, Tsai M, Osgood R M , Dötsch H. Magneto-optical nonreciprocal phase shift in garnet/silicon-on-insulator waveguides. Optics Letters, 2004, 29(9): 941–943

[4] Yokoi H, Mizumoto T, Shinjo N, Futakuchi N, Nakano Y. Demonstration of an optical isolator with a semiconductor guiding layer that was obtained by use of a nonreciprocal phase shift. Applied Optics, 2000, 39(33): 6158–6164

[5] Manipatruni S, Robinson J T, Lipson M. Optical nonreciprocity in optomechanical structures. Physical Review Letters, 2009, 102(21): 213903-1–213903-4

[6] Shi Y, Yu Z, Fan S. Limitations of nonlinear optical isolators due to dynamic reciprocity. Nature Photonics, 2015, 9(6): 388–392

[7] Kang M S, Butsch A, Russell P S J. Reconfigurable light-driven opto-acoustic isolators in photonic crystal fibre. Nature Photonics, 2011, 5(9): 549–553

[8] Lira H, Yu Z, Fan S, Lipson M. Electrically driven nonreciprocity induced by interband photonic transition on a silicon chip. Physical Review Letters, 2012, 109(3): 033901-1–033901-5

[9] Yu Z, Fan S. Complete optical isolation created by indirect interband photonic transitions. Nature Photonics, 2009, 3(2): 91–94

[10] Aman H, Hussain B, Aman A. Laser diode corner pumped Nd:KGW slab laser. Frontiers of Optoelectronics, 2014, 7(1): 107–109

[11] Min S, Liao S, Zou C, Zhang X, Dong J. Route-asymmetrical optical transmission and logic gate based on optical gradient force. Optics Express, 2014, 22(21): 25947–25952PMID:25401628

[12] Gallo K, Assanto G, Parameswaran K R, Fejer M M. All-optical diode in a periodically poled lithium niobate waveguide. Applied Physics Letters, 2001, 79(3): 314–316

[13] Xu Q, Lipson M. All-optical logic based on silicon micro-ring resonators. Optics Express, 2007, 15(3): 924–929

[14] Xu Q, Soref R. Reconfigurable optical directed-logic circuits using microresonator-based optical switches. Optics Express, 2011, 19(6): 5244–5259

[15] Chu T, Yamada H, Ishida S, Arakawa Y. Compact 1 × N thermo-optic switches based on silicon photonic wire waveguides. Optics Express, 2005, 13(25): 10109–10114 9

[16] Notomi M, Shinya A, Mitsugi S, Kira G, Kuramochi E, Tanabe T. Optical bistable switching action of Si high-Q photonic-crystal nanocavities. Optics Express, 2005, 13(7): 2678–2687

[17] Pruessner M W, Stievater T H, Ferraro M S, Rabinovich W S. Thermo-optic tuning and switching in SOI waveguide Fabry-Perot microcavities. Optics Express, 2007, 15(12): 7557–7563

[18] Fan L, Wang J, Varghese L T, Shen H, Niu B, Xuan Y, Weiner A M, Qi M. An all-silicon passive optical diode. Science, 2012, 335(6067): 447–450

[19] Fan L, Varghese L T, Wang J, Xuan Y, Weiner A M, Qi M. Silicon optical diode with 40 dB nonreciprocal transmission. Optics Letters, 2013, 38(8): 1259–1261

[20] Tocci M D, Bloemer M J, Scalora M, Dowling J P, Bowden C M. Thin-film nonlinear optical diode. Applied Physics Letters, 1995, 66(18): 2324–2326

[21] Zhang Y, Li D, Zeng C, Huang Z, Wang Y, Huang Q, Wu Y, Yu J, Xia J. Silicon optical diode based on cascaded photonic crystal cavities. Optics Letters, 2014, 39(6): 1370–1373

[22] Soljačić M, Luo C, Joannopoulos J D, Fan S. Nonlinear photonic crystal microdevices for optical integration. Optics Letters, 2003, 28(8): 637–639

[23] Almeida V R, Lipson M. Optical bistability on a silicon chip. Optics Letters, 2004, 29(20): 2387–2389

[24] Wurtz G A, Pollard R, Zayats A V. Optical bistability in nonlinear surface-plasmon polaritonic crystals. Physical Review Letters, 2006, 97(5): 057402-1–057402-4

[25] Wang D, Zhou H, Guo M, Zhang J, Evers J, Zhu S. Optical diode made from a moving photonic crystal. Physical Review Letters, 2013, 110(9): 093901-1–093901-5

[26] Liu V, Miller D A B, Fan S. Ultra-compact photonic crystal waveguide spatial mode converter and its connection to the optical diode effect. Optics Express, 2012, 20(27): 28388–28397

[27] Xue C, Jiang H, Chen H. Highly efficient all-optical diode action based on light-tunneling heterostructures. Optics Express, 2010, 18(7): 7479–7487

[28] Xu J, Zhuang X, Guo P, Huang W, Hu W, Zhang Q, Wan Q, Zhu X, Yang Z, Tong L, Duan X, Pan A. Asymmetric light propagation in composition-graded semiconductor nanowires. Scientific Reports, 2012, 2(11): 820-1–820-7 PMID:23150783

[29] Wang J. A special issue on Information Optoelectronics: Devices, Technologies and Applications. Frontiers of Optoelectronics, 2014, 7(3): 263–264

[30] Wachter E A, Thundat T, Oden P I, Warmack R J, Datskos P G, Sharp S L. Remote optical detection using microcantilevers. Review of Scientific Instruments, 1996, 67(10): 3434–3439

[31] Datskos P G, Lavrik N V, Rajic S. Performance of uncooled microcantilever thermal detectors. Review of Scientific Instruments, 2004, 75(4): 1134–1148

[32] Lavrik N V, Sepaniak M J, Datskos P G. Cantilever transducers as a platform for chemical and biological sensors. Review of Scientific Instruments, 2004, 75(7): 2229–2253

[33] Ding Y, Peucheret C, Ou H, Yvind K. Fully etched apodized grating coupler on the SOI platform with −0.58 dB coupling efficiency. Optics Letters, 2014, 39(18): 5348–5350

[34] Taillaert D, Bienstman P, Baets R. Compact efficient broadband grating coupler for silicon-on-insulator waveguides. Optics Letters, 2004, 29(23): 2749–2751

[35] Miller D A B. All linear optical devices are mode converters. Optics Express, 2012, 20(21): 23985–23993

[36] Miller D A B. Self-aligning universal beam coupler. Optics Express, 2013, 21(5): 6360–6370

Acknowledgements

This work was partially supported by the National Basic Research Program of China (No. 2011CB301704), the Program for New Century Excellent Talents in Ministry of Education of China (No. NCET-11-0168), a Foundation for the Author of National Excellent Doctoral Dissertation of China (No. 201139), the National Natural Science Foundation of China (Grant Nos. 11174096 and 61475052), and the Opened Fund of the State Key Laboratory on Advanced Optical Communication System and Network (No. 2015GZKF03004).

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