Coupling characteristics between fundamental mode square waveguide and fiber

Fuyuan Guo; Lianhuang Li; Hua Zheng; Yi Wang; Jinrui Ke; Tiangui Dai; Xiaoming Lin

doi:10.1117/12.2001111

27 November 2012 Coupling characteristics between fundamental mode square waveguide and fiber

Fuyuan Guo, Lianhuang Li, Hua Zheng, Yi Wang, Jinrui Ke, Tiangui Dai, Xiaoming Lin

Proceedings Volume 8555, Optoelectronic Devices and Integration IV; 85551H (2012) https://doi.org/10.1117/12.2001111
Event: Photonics Asia, 2012, Beijing, China

Abstract

Based on the weakly waveguide approximation, the eigen mode field distribution of fundamental mode step index square waveguide is suggested, and the overlap integral formula between two mode field distributions is employed, the expression of coupling efficiency between fundamental mode step index square waveguide and fiber is suggested. As the values of beam propagation factors of fundamental mode step index square waveguide and fiber are closed to unit in a certain range of normalized frequency, it is rational to express the mode field distributions of fundamental mode square waveguide and fiber by the Gaussian approximation in some range of normalized frequency. As the equivalent mode field size which defined by the geometric mean of second moment mode field size and differential operator mode field size is employed to express the waist sizes of Gaussian approximation for fundamental mode step index square waveguide and fiber, the coupling characteristics between fundamental mode step index square waveguide and fiber is discussed, and a useful optimum coupling condition is suggested. The conclusions would be beneficial to the assembling technology of optical waveguide device.

Citation Download Citation

Fuyuan Guo, Lianhuang Li, Hua Zheng, Yi Wang, Jinrui Ke, Tiangui Dai, and Xiaoming Lin "Coupling characteristics between fundamental mode square waveguide and fiber", Proc. SPIE 8555, Optoelectronic Devices and Integration IV, 85551H (27 November 2012); https://doi.org/10.1117/12.2001111

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
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Waveguides

Cladding

Waveguide modes

Step index fibers

Planar waveguides

Beam propagation method

Refractive index

Show All Keywords

Keywords/Phrases

Search In:

Publication Years