A high precision passive coupling scheme between optical fiber and waveguide

Cong Chen; Yong Liu; Qing Liu

doi:10.1117/12.3023691

18 March 2024 A high precision passive coupling scheme between optical fiber and waveguide

Cong Chen, Yong Liu, Qing Liu

Proceedings Volume 13104, Advanced Fiber Laser Conference (AFL2023); 131045P (2024) https://doi.org/10.1117/12.3023691
Event: Advanced Fiber Laser Conference (AFL2023), 2023, Shenzhen, China

Abstract

With the development of optical communication technology, more and more waveguide devices are applied to commercial optical communication systems. The coupling of optical fiber and waveguide has become a bottleneck to reduce the cost of optical devices. Compared with active coupling, passive coupling uses a V slot corresponding to the waveguide and directly sticks the fiber into the V slot, greatly reducing the coupling time. However, when the passive coupling method is used in the existing literature and patents, the waveguide is engraved through another mask plate with a V-slot opening after making the waveguide, and there is a embedding error, so the coupling efficiency is not satisfactory. In this paper, a one-step embedding method is proposed, and the V-slot and the waveguide core layer pattern are designed on a mask plate. Through a special waveguide preparation process to complete the production of V slot at the same time, because the relative position of V slot and waveguide has been determined in the design of the mask plate, so the horizontal position of V slot can be made very precise, can ensure that the optical fiber and the waveguide core in the horizontal direction of alignment, by the width of the V slot to control the optical fiber and the waveguide core in the vertical direction of alignment, experimental results show that, when the width of V slot is 132μ m, the coupling efficiency is the highest, and the coupling insertion loss is only 0.07dB larger than that of the active coupling, which is basically close to the level of the active coupling. The one-step embedding method is simple, reliable, has the prospect of automation and large-scale application, and will greatly reduce the labor cost of optical device packaging.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Cong Chen, Yong Liu, and Qing Liu "A high precision passive coupling scheme between optical fiber and waveguide", Proc. SPIE 13104, Advanced Fiber Laser Conference (AFL2023), 131045P (18 March 2024); https://doi.org/10.1117/12.3023691

ACCESS THE FULL ARTICLE

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: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Waveguides

Optical fibers

Optical components

Laser engraving

Silicon

Design

Optical alignment

Show All Keywords

Keywords/Phrases

Search In:

Publication Years