Properties of polycrystalline germanium-dioxide for the materials of hollow-core fiber

Yingzhi Sun; Lantian Hou; Hang Yu; Honglin Wang; ChongXiu Yu; Jintong L. Lin

doi:10.1117/12.349235

26 May 1999 Properties of polycrystalline germanium-dioxide for the materials of hollow-core fiber

Yingzhi Sun, Lantian Hou, Hang Yu, Honglin Wang, ChongXiu Yu, Jintong L. Lin

Proceedings Volume 3610, Laser Material Crystal Growth and Nonlinear Materials and Devices; (1999) https://doi.org/10.1117/12.349235
Event: Optoelectronics '99 - Integrated Optoelectronic Devices, 1999, San Jose, CA, United States

Abstract

In this paper, we reported, for the first time to our knowledge, that polycrystalline germanium-dioxide has a n < 1 and the extinction coefficient becomes smaller than other materials given at 10.6 micrometers , n is 0.27 and K is 0.51, we also exactly measured the infrared reflective spectra of polycrystalline germanium-dioxide from the input angle 20 degree to 70 for wavelengths between 2 and 25 micrometers . Our measuring results are compared with an exact calculation, and the agreement is found to be excellent. On the other hand, in order to study on the properties of polycrystalline germanium-dioxide for the materials of hollow-core fiber in detail, we fabricated a hollow-core fiber by use of this material. After then, we measured the straight optical fiber losses, the transmission properties of the bending fiber and the spot size of the fiber's output beam, we found that the high order mode degenerate quickly with the increase of the length and the nonuniform in the structure of fiber causes the loss of all kinds of modes. We further found that the different focal length of coupling Len causes different bending loss and the diameter of the output beam depends strongly on the existence of transmission mode in the fiber, meantime, the transmission rate of fiber depends strongly on the divergence angle (theta) .

Citation Download Citation

Yingzhi Sun, Lantian Hou, Hang Yu, Honglin Wang, ChongXiu Yu, and Jintong L. Lin "Properties of polycrystalline germanium-dioxide for the materials of hollow-core fiber", Proc. SPIE 3610, Laser Material Crystal Growth and Nonlinear Materials and Devices, (26 May 1999); https://doi.org/10.1117/12.349235

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
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Reflectivity

Infrared radiation

Refractive index

Waveguides

Structured optical fibers

Carbon dioxide lasers

Dielectrics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years