Enhancement of the nonreciprocal magneto-optic effect of TM modes using iron garnet double layers with opposite Faraday rotation

Wallenhorst, M.; Niemöller, M.; Dötsch, H.; Hertel, P.; Gerhardt, R.; Gather, B.

doi:10.1063/1.359516

Cited by 52 publications

(29 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among these methods, adding a compensation wall ͑CW͒ in the MO materials is an efficient way by the introduction of a large jump of gyrotropy near the CW. [14][15][16][17][18] Recently an alternative method utilizing a nanoscale air gap ͑NAG͒ waveguide with MO layer at the top has been proposed for the efficient enhancement of NPS. 21 Theoretical results showed that the NAG waveguide can enhance the NPS almost eight times than the non-NAG waveguide structures.…”

Section: Enhancement Of Nonreciprocal Phase Shift By Magneto-optical mentioning

confidence: 99%

Enhancement of nonreciprocal phase shift by magneto-optical slot waveguide with a compensation wall

Zhang

Huang

et al. 2011

Applied Physics Letters

View full text Add to dashboard Cite

We demonstrated that the nonreciprocal phase shift (NPS) can be efficiently enhanced by introducing a low-index magneto-optical (MO) slot with a compensation wall (CW) in a high-index non-MO waveguide. The proposed structure has been examined by a perturbation theory and it is found that by adjusting the slot width and waveguide height, more than 20 times enhancement of NPS comparing with the rib waveguide with a CW can be realized.

show abstract

Section: Enhancement Of Nonreciprocal Phase Shift By Magneto-optical mentioning

confidence: 99%

Enhancement of nonreciprocal phase shift by magneto-optical slot waveguide with a compensation wall

Zhang

Huang

et al. 2011

Applied Physics Letters

View full text Add to dashboard Cite

show abstract

“…Furthermore, several groups have begun to study size reduction of this device. They have considered the use of double-layered garnets [3], compensation walls [4], or garnets bound to high-index contrast slabs [5]. It has been estimated that the length of the isolators can be reduced to a minimum of several hundred micrometers [5].…”

Section: Introductionmentioning

confidence: 99%

Parallel-Coupled Nonreciprocal Microring Resonators for Miniaturized Optical Isolators with Wider Bandwidth

Kono

Koshiba

2006

2006 IEEE LEOS Annual Meeting Conference Proceedings

View full text Add to dashboard Cite

We propose parallel-coupled nonreciprocal microring resonators to expand the operating bandwidth of nonreciprocal optical devices based on ring resonators. The operation of this nonreciprocal device is demonstrated using a finite element method. IntroductionThe development of optical fiber communication systems has spurred growing demand for optical isolators. At the present time, however, the only readily available isolators are bulky and expensive. There is, therefore, a need for inexpensive and more reliable isolators that can be integrated with other optical devices. To satisfy this demand, numerous designs for optical waveguide isolators have been explored. These waveguide isolators are classified broadly into two categories: configurations relying on nonreciprocal TE/TM mode conversion and configurations relying on nonreciprocal phase shifts [1].The configurations relying on TE/TM mode conversion have encountered problems due to the phase mismatch between the two modes. On the other hand, the configurations relying on nonreciprocal phase shifts intrinsically require no phase matching, as TE and TM modes are not coupled in the waveguides. An isolator based on this concept has been successfully demonstrated in a Mach-Zehnder configuration [2]. Furthermore, several groups have begun to study size reduction of this device. They have considered the use of double-layered garnets [3], compensation walls [4], or garnets bound to high-index contrast slabs [5]. It has been estimated that the length of the isolators can be reduced to a minimum of several hundred micrometers [5]. This supposedly unbreakable limit to further size reductions, however, concerns only transversal waveguide geometries of nonreciprocal phase shifters.Our efforts to overcome this limitation involve the introduction of nonreciprocal microring resonators to optical waveguide isolators. Our previous report has demonstrated that a Mach-Zehnder interferometer assisted by the nonreciprocal resonator can function as an optical isolator [6]. However, the operation bandwidth of this device was limited to only AA = 0.1 nm. For a fresh approach to this problem, this report proposes parallel-coupled nonreciprocal microring resonators, and demonstrates how this configuration is useful for increasing the operation bandwidth.

show abstract

“…In the subsequent studies (Jacob et al, 1995;Ling, 1994;Wallenhorst et al 1995) attention was paid to the theoretical and experimental studies of not only the Faraday rotation angle, but also to the studies of a state of light polarization and transmission function of the simple resonance objects such as Fabry-Perot resonators. Based on the obtained results authors have concluded that the application of the Fabry-Perot resonator is an effective method for a measuring of the Faraday rotation, especially in the inefficient media.…”

Section: Wwwintechopencom Infrared Radiation 58mentioning

confidence: 99%

Transmission, Reflection and Thermal Radiation of a Magneto-Optical Fabry-Perot Resonator in Magnetic Field: Investigations and Applications

Liptuga¹,

Morozhenko²,

Pipa³

2012

Infrared Radiation

View full text Add to dashboard Cite

Enhancement of the nonreciprocal magneto-optic effect of TM modes using iron garnet double layers with opposite Faraday rotation

Cited by 52 publications

References 15 publications

Enhancement of nonreciprocal phase shift by magneto-optical slot waveguide with a compensation wall

Enhancement of nonreciprocal phase shift by magneto-optical slot waveguide with a compensation wall

Parallel-Coupled Nonreciprocal Microring Resonators for Miniaturized Optical Isolators with Wider Bandwidth

Transmission, Reflection and Thermal Radiation of a Magneto-Optical Fabry-Perot Resonator in Magnetic Field: Investigations and Applications

Contact Info

Product

Resources

About