Radiatively Coupled Waveguide Concept for an Integrated Magneto-Optic Circulator

1998 ◽  
Vol 517 ◽  
Author(s):  
M. Lohmeyer ◽  
M. Shamonin ◽  
N. Bahlmann ◽  
P. Hertel ◽  
H. Dotsch
Keyword(s):  
Transmission Loss ◽  
Specific Form ◽  
Optical Channels ◽  
Integrated Optical ◽  
Transfer Behavior ◽  
Fabrication Tolerances ◽  
Optical Isolators ◽  
Geometry Parameter ◽  
Novel Devices ◽  
Isolation Performance

AbstractThree-guide couplers with multimode central waveguides allow for remote coupling between optical channels. A simple three mode approximation turns out to be sufficient for the description of the main features of the power transfer behavior. The specific form of the relevant modes suggests the design of integrated optical isolators and circulators based on magnetic garnet materials. These novel devices are superior to conventional nonreciprocal couplers with respect to the total length and admissible fabrication tolerances. We characterize the isolation performance and the transmission loss for the proposed devices by propagating mode simulations and estimate the influence of geometry parameter deviations.

A Comparison of an Improved Design for Two Integrated Optical Isolators Based on Nonreciprocal Mach-Zehnder Interferometry

1998 ◽  
Vol 517 ◽  
Author(s):  
N. Bahlmann ◽  
M. Lohmeyer ◽  
M. Wallenhorst ◽  
H. Dötsch ◽  
P. Hertel
Keyword(s):  
Phase Shift ◽  
Double Layer ◽  
Opposite Sign ◽  
Absolute Value ◽  
Integrated Optical ◽  
Fabrication Tolerances ◽  
The Difference ◽  
Optical Isolators ◽  
Improved Design ◽  
Backward Propagation

AbstractNonreciprocal rib waveguide structures can be used to realize integrated optical isolators. The nonreciprocal phase shift is the difference between the forward and backward propagation constants of TM modes in magneto-optic waveguides. It can be optimized with respect to absolute value and temperature dependence if double layer waveguides with different magnetic and nonmagnetic layers are prepared. In this paper we propose an improved design for two different Mach-Zehnder interferometer isolators the nonreciprocal parts of which are formed by such double layer waveguides. One concept utilizes a nonreciprocal and a reciprocal arm. In the other case both arms are nonreciprocal but with opposite sign of the nonreciprocal phase shift. A particular property of both concepts is that the lengths of the nonreciprocal arms are well defined. The rest of the interferometer is made by reciprocal rib waveguides. Therefore, the nonreciprocal phase shift is well known. The concepts are compared with regard to isolation ratio, forward losses and fabrication tolerances. Moreover, we simulate the entire isolator by a finite difference beam propagation calculation.

scholarly journals Integrated optical isolators using electrically driven acoustic waves

2020 ◽  
Vol 28 (24) ◽  
pp. 36055
Author(s):  
Nathan Dostart ◽  
Yossef Ehrlichman ◽  
Cale Gentry ◽  
Miloš A. Popović
Keyword(s):  
Acoustic Waves ◽  
Integrated Optical ◽  
Optical Isolators

scholarly journals Electrically Driven and Thermally Tunable Integrated Optical Isolators for Silicon Photonics

2016 ◽  
Vol 22 (6) ◽  
pp. 271-278 ◽  
Author(s):  
Duanni Huang ◽  
Paolo Pintus ◽  
Chong Zhang ◽  
Yuya Shoji ◽  
Tetsuya Mizumoto ◽  
...  
Keyword(s):  
Silicon Photonics ◽  
Integrated Optical ◽  
Optical Isolators

scholarly journals Hybrid graphene/silicon integrated optical isolators with photonic spin–orbit interaction

2016 ◽  
Vol 108 (15) ◽  
pp. 151103 ◽  
Author(s):  
Jingwen Ma ◽  
Xiang Xi ◽  
Zejie Yu ◽  
Xiankai Sun
Keyword(s):  
Orbit Interaction ◽  
Spin Orbit ◽  
Spin Orbit Interaction ◽  
Integrated Optical ◽  
Optical Isolators

Thin-film magnetless Faraday rotators for compact heterogeneous integrated optical isolators

2017 ◽  
Vol 121 (23) ◽  
pp. 233101 ◽  
Author(s):  
Dolendra Karki ◽  
Vincent Stenger ◽  
Andrea Pollick ◽  
Miguel Levy
Keyword(s):  
Thin Film ◽  
Integrated Optical ◽  
Optical Isolators

scholarly journals Fully integrated optical isolators for space division multiplexed (SDM) transmission

APL Photonics ◽  
2019 ◽  
Vol 4 (2) ◽  
pp. 022801 ◽  
Author(s):  
Yongmin Jung ◽  
Andrew Wood ◽  
Saurabh Jain ◽  
Yusuke Sasaki ◽  
Shaif-Ul Alam ◽  
...  
Keyword(s):  
Fully Integrated ◽  
Space Division ◽  
Integrated Optical ◽  
Optical Isolators

Study on the Vibro-Acoustic Characteristics of a Vibration Isolation Mass Structure with Composite Braces

2011 ◽  
Vol 117-119 ◽  
pp. 85-88
Author(s):  
Di Jia ◽  
Fu Zhen Pang ◽  
Xu Chao Yin ◽  
Ye Xi
Keyword(s):  
Vibration Isolation ◽  
Transmission Loss ◽  
Flexural Wave ◽  
Acoustic Characteristics ◽  
Damping Material ◽  
Section Size ◽  
Vibration And Sound Radiation ◽  
Vibration Isolation Performance ◽  
Isolation Performance ◽  
Material Study

In this paper a vibration isolation mass structure with composite braces is proposed to reduce noise and vibration transmission through the hull and internals of a double cylindrical shell. Influence of the various complicating effects such as vibration isolation mass’s cross section size or the layout location on the vibration isolation performance of composite braces structure are discussed. Besides, we also provide a composite structure form with high transmission loss due to the theory of vibration insulation of isolation mass and noise reduction of damping material. Study shows that composite braces structure combined the appropriate vibration isolation mass with viscoelastic material can effectively decrease the hull vibration and sound radiation in the mid-high frequency domain, which can significantly attenuate transmission of the plate flexural wave.

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