Dr. Naoki Fujiwara Profile

Dr. Naoki Fujiwara

at NTT Device Technology Labs

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 | 24 February 2020 Paper

Demonstration of 1.3um wavelength range super structure grating DBR laser with wide wavelength tuning range of over 30 nm by introducing carrier confinement layers

T. Shindo, N. Fujiwara, Y. Ohiso, T. Sato, H. Matsuzaki

Proceedings Volume 11301, 113010S (2020) https://doi.org/10.1117/12.2543101

KEYWORDS: Wavelength tuning, Refractive index, Tunable lasers, Light sources

Read Abstract +

In this study, the 1.3 μm wavelength range super structure grating (SSG-) distributed Bragg reflector (DBR) laser was experimentally demonstrated for the first time. The use of 1.3 μm wavelength range tunable DBR lasers has been barely reported because of their small refractive index change compared with that of the 1.55-μm wavelength range, although 1.3 μm is a major wavelength range for optical communication. One reason is that increasing the carrier concentration in the InGaAsP core layer in the DBR sections is difficult. This is because the bandgap energy of the core layer for 1.3-μm wavelength range lasers should be relatively large compared with that of 1.55-μm wavelength range lasers, and it reduces the band offset between core and InP claddings. To efficiently trap the carrier inside the core layer, we introduced InAlAs carrier confinement layers (CCLs) to both boundaries between the core layer and cladding layers. As a result, the 1.3 μm wavelength range SSG-DBR laser was successfully demonstrated with a 4.9-nm quasi-continuous wavelength tuning range by using the single SSG-modes. Furthermore, the total wavelength tuning range of 31 nm and stable single mode operation for the entire tuning range were achieved. The introduced CCLs significantly enhanced the refractive index change due to the carrier-plasma effect and thus we can successfully demonstrate wide range tuning of the 1.3-μm wavelength range SSG-DBR laser.

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