Dr. Taro Arakawa Profile

Dr. Taro Arakawa

Assistant Professor at Yokohama National Univ

SPIE Involvement:

Author

Publications (1)

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 | 26 November 2007 Paper

Nano-structured special quantum well for high-performance optical modulators

Taro Arakawa, Kunio Tada

Proceedings Volume 6782, 67820W (2007) https://doi.org/10.1117/12.754535

KEYWORDS: Absorption, Modulators, Quantum wells, Switches, Gallium, Gallium arsenide, Optical modulators, Modulation, Aluminum, Excitons

Read Abstract +

A five-layer asymmetric coupled quantum well (FACQW) is a novel potential-tailored quantum well that is expected to exhibit giant electrorefractive (ER) index change in a transparency wavelength region. We studied the GaAs/AlGaAs and InGaAs/InAlAs FACQW theoretically and experimentally. A GaAs/AlGaAs FACQW was grown by molecular beam epitaxy (MBE). Giant ER sensitivity |dn/dF| as large as 1.7 × 10^-4 cm/kV was observed in the FACQW phase modulator. A Mach-Zehnder (MZ) FACQW modulator was fabricated and the operation voltage was successfully decreased. For 1.55 μm wavelength region, an InGaAs/InAlAs FACQWs was also proposed and studied. We found that the InGaAs/InAlAs FACQW is also expected to produce a giant ER sensitivity |dn/dF|. The InGaAs/InAlAs multiple FACQW was successfully grown by MBE and the results of its photoabsorption current measurements are consistent with the theory. We proposed an MZ modulator and a 2 × 2 switch with the multi-FACQWs in the core. Driving voltages of the FACQW modulator and the switch with 1mm-long phase shifters can be decreased as low as 0.1~0.2 V.

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