Ms. Yoko Yamashita Profile

Yoko Yamashita

at NTT - Tsukuba R&D Ctr

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 | 4 March 2022 Presentation + Paper

Laser-inscribed optical tap based on two-mode fiber with flexible branching property design

Yoko Yamashita, Takayoshi Mori, Takashi Matsui, Kazuhide Nakajima

Proceedings Volume 12028, 1202805 (2022) https://doi.org/10.1117/12.2607528

KEYWORDS: Waveguides, Polarization, Laser optics, Single mode fibers, Optical fibers, Scattering, Refractive index, Femtosecond laser micromachining

Read Abstract +

In order to construct 5G and beyond 5G networks effectively, it becomes important to prepare a sufficient number of interfaces with optical fiber at arbitrary locations. An optical wavelength- and power-tapping device is expected to provide a flexible junction point in optical networking, and a fiber-based optical device has great advantages in terms of low-loss and high compatibility with existing single-mode fibers. In this paper, we propose a wavelength- and powertunable in-fiber optical tap inscribed in a two-mode fiber (2MF) using a femtosecond laser. This optical tap is composed of a long-period fiber grating (LPG) and an asymmetric tap waveguide that is inserted transversely across the core to the cladding. In the LPG, transmitted LP01-mode light is converted into LP11 mode, and the converted LP11 mode is coupled to the tap waveguide while the LP01 mode passes through the fiber core. The operation wavelength and branching-power ratio can be controlled by the LPG design. We have revealed the optimum design for the tap waveguide. Here, the relationship among diameters of core and tap, the relative refractive indices of core and tap, and the angle between fiber core and tap was considered. We also experimentally confirmed the coupling efficiency to the core and tap when LP01 and LP11 modes were separately launched by using a tap waveguide inscribed in a 2MF. The factors that degraded the coupling efficiency were discussed by comparison with the calculation results.

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