TAG magneto-optic ceramics and its application in high power optical isolators

2021 ◽  
Author(s):  
Jie Chen ◽  
Shengming Zhou
Keyword(s):  
High Power ◽  
Optical Isolators ◽  
Magneto Optic

Faraday Effect Devices, Optical Isolators

1998 ◽  
Vol 517 ◽  
Author(s):  
Donald K. Wilson
Keyword(s):  
Rare Earth ◽  
Magnetic Fields ◽  
Faraday Effect ◽  
Fiber Optic ◽  
High Magnetic Fields ◽  
Laser Applications ◽  
Industrial Use ◽  
Critical Components ◽  
Optical Isolators ◽  
Magneto Optic

AbstractAlthough discovered over 150 years ago, it was not until the 1970's that materials were developed that enabled magneto-optic (Faraday) effect devices of practical sizes. These developments are: magneto-optic materials with high Verdet constants, and the rare-earth magnet materials, capable of extremely high magnetic fields.The magneto-optic effect has enabled development of equipment used in diverse laser applications, from industrial use to fiber-optic telecommunications.The principle of operation of optical isolators and circulators is described herein, as well as descriptions of critical components in such equipment, such as the polarizers and the magnets.

Review of magneto-optic materials for high power laser isolators （Invited）

2020 ◽  
Vol 49 (12) ◽  
pp. 20201072-20201072
Author(s):  
陈杰 Jie Chen ◽  
周圣明 Shengming Zhou
Keyword(s):  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Magneto Optic

Optical isolators for high-power giant-pulse lasers

1972 ◽  
Vol 5 (1) ◽  
pp. 56-58 ◽  
Author(s):  
K Eidmann ◽  
P Sachsenmaier ◽  
H Salzmann ◽  
R Sigel
Keyword(s):  
High Power ◽  
Giant Pulse ◽  
Optical Isolators

Review of magneto-optic materials for high power laser isolators （Invited）

2020 ◽  
Vol 49 (12) ◽  
pp. 20201072-20201072
Author(s):  
陈杰 Jie Chen ◽  
周圣明 Shengming Zhou
Keyword(s):  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Magneto Optic

Fabrication of Integrated Magneto-Optic Isolator

2004 ◽  
Vol 834 ◽  
Author(s):  
Sang-Yeob Sung ◽  
Xiaoyuan Qi ◽  
John Reinke ◽  
Samir K. Mondal ◽  
Sun Sook Lee ◽  
...  
Keyword(s):  
Integrated Circuit ◽  
Rf Sputtering ◽  
Magnetic Films ◽  
Light Sources ◽  
Photonic Integrated Circuit ◽  
Garnet Films ◽  
Optical Applications ◽  
And Performance ◽  
Optical Isolators ◽  
Magneto Optic

ABSTRACTIn optical applications, especially in optical communications, protecting light sources from harmful reflected energy is very important. With magneto-optic isolators, these light sources can be protected to extend their lifetimes and performance by blocking back-reflected light. The active element in these optical isolators is a magneto-optical garnet. However, garnet is difficult to integrate with semiconductors due to the high thermal budget usually required to obtain the garnet crystal structure. For example, current isolator garnets cannot be integrated monolithically into a photonic integrated circuit due to the growth process, liquid phase epitaxy, which requires growth temperatures of >900 °C and also garnet substrates. In this work, magneto-optical garnets were grown monolithically by low-temperature reactive RF sputtering, followed by an ultra-short (<15 sec) anneal. The refractive indices of the resulting garnets were measured using Fourier transform infrared (FTIR) spectroscopy. Various rib waveguides were fabricated by both wet etching and reactive ion etching (RIE). The width of the waveguides varied from 2 to 12 μm and the heights were varied from 0.5 to 1.0 μm. Sm-Co thin films were used for integrated biasing magnets. They were deposited on top of claddings of both magnesium oxide and yttrium oxide, all using the same sputtering system that was used to deposit the garnet films. These magnetic films had high enough remanent fields to saturate the garnet waveguides, and they had coercivities of 700 Oe. The Faraday rotations and waveguide losses of the subsequent isolators were measured to be 10 degrees and 0.1 dB/μm at 632 nm, respectively. Although this prototype is promising, optimization of the device designs is ongoing. In summary, this work succeeded in providing the first comprehensive report on etching YIG by RIE, in developing all of the steps required for integrating isolators on non-garnet substrates, and in proving the feasibility of these isolators.

Sign in / Sign up

Export Citation Format

Share Document