Mr. Minfeng Wang Profile

Minfeng Wang

at Xiamen Univ

SPIE Involvement:

Author

Publications (3)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 11 November 2008 Paper

Analysis and design for ultrafast magneto-optic switch

Xu Chen, Zihua Weng, Shaohan Lin, Minfeng Wang

Proceedings Volume 7134, 71341Z (2008) https://doi.org/10.1117/12.803326

KEYWORDS: Magnetism, Switches, Polarization, Magneto-optics, Ultrafast phenomena, Picosecond phenomena, Crystals, Molybdenum, Switching, Optical switching

Read Abstract +

In the paper, a high speed magneto-optic switch based on the Faraday Effect is designed and analyzed. The novel magneto-optic switch presented in this paper will satisfy high speed transmission and exchange of optical-message through all-optic network. It consists of three important components as followed novel optical route, Faraday rotator configuration with ultrafast magnetic field and picosecond impulser. It may switch the optical route by controlling Faraday rotator which is supplied by picosecond impulser. By the development of the magneto-optic crystal, and ultrafast magnetic field, the designed magneto-optic switch featured as low insertion loss, low crosstalk, high switching speed and small bulky size gets ahead of traditional optic switches. As the first part of this paper, a design scheme of optical route in high speed magneto-optic switch and its experiment analysis will be discussed. Good avalanche effect of transistor FMMT415 is adopted to generate picosecond pulse signal and then to drive the high speed magnetic field. Shown by the experiment data, the rising time of the impulse about 1ns, the amplitude of the impulse about 100~500V are available on the Output end from the picosecond impulser, which can be used as driving current pulse of Faraday rotator. By using the relationship between the polarization plane rotate direction of polarization light and magnetic direction, the Faraday rotator is designed.

Proceedings Article | 11 November 2008 Paper

Research on 1x2 all fiber high-speed magneto-optic switch

Shaohan Lin, Zihua Weng, Minfeng Wang, Xu Chen, Jianjian Ruan

Proceedings Volume 7134, 71341Y (2008) https://doi.org/10.1117/12.804037

KEYWORDS: Switches, Magnetism, Magneto-optics, Switching, Molybdenum, Polarization, Crystals, Optical switching, Collimators, Field effect transistors

Read Abstract +

In this paper two new types of 1x2 all fiber high-speed magneto-optic switches with thick film ferromagnetic bismuth-substituted rare-earth iron garnets are proposed and tested. Two types of magneto-optic switches are discussed by using two kinds of crystals. One is the ordinary switch which needs indurance magnetic field to maintain its state; And the other is latching type switch, the crystal remains in a given magnetic state for unlimited duration without energy supply. Circuits used to generate magnetic field are also discussed. The theoretical and experimental analysis of optical route, measurement of switching time and magnetic filed etc. are included. The extinction ratio of the switches are currently about 20 dB. It can be improved further by additional Faraday rotation created by another magneto-optic (MO) material in the light path. The switching time of MO material is under 100 ns, it can be ignored. Magnetic field should be able to change the voltage rapidly in order to obtain fast operating time of the optical switch. The inductance of the solenoid used for generating the required magnetic field is the bottleneck for rapid switching of the magnetic field in the MO material. The switching time of the two optical switch are discussed.

Proceedings Article | 21 November 2007 Paper

A novel all-fiber magneto-optic switch based on high-speed magnetic field module

Minfeng Wang, Zihua Weng, Xu Chen, Shaohan Lin, Qinping Wu

Proceedings Volume 6781, 67812Y (2007) https://doi.org/10.1117/12.742740

KEYWORDS: Magnetism, Switches, Crystals, Magneto-optics, Polarization, Switching, Beam splitters, Garnet, Laser crystals, Iron

Read Abstract +

All-fiber magneto-optic switch is presented in this paper which contains both of optical route and high-speed magnetic field module. The optical route has a 1×2 Fiber Polarization Beam Splitter (FPBS) and a 2×2 Dual Fiber Polarization Beam Splitter (DFPBS). The high-speed magnetic field module is core of all-fiber magneto-optic switch which changes the electronic pulse into magnetic pulse to control the light polarization's plane based on Faraday Effect. The high-speed magnetic field module adopts Yttrium Iron Garnet (YIG) crystal fiber, nanosecond impulser and high-speed magnetic field, characterized by no moving parts, low transmission loss and polarization insensitive, low optical insertion loss etc. YIG crystal fiber, the magneto-optic material with high Verdet constant, used to rotate the polarization plane of the polarized light 90° in all-fiber magneto-optic switch, is grown by Laser Heated Pedestal Growth (LHPG). CMOS chip FMMT415 which has good avalanche effect is employed to generate the nanosecond pulse. The pulse we measured is about 10 ns of the rising time and 0~600V of the amplitude and the output current is used to create the magnetic field. The obtained results indicate that the switch has a potential of low cross-talk, low insertion-loss and high switching speed. The optical route will be easily and quickly controlled by the means of nanosecond impulser, therefore, and the switching time is expected to less than 1 μs.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years