Effects of radio-frequency powers on the properties of carbon coatings on optical fibers prepared by plasma enhanced chemical vapor deposition

✍ Scribed by Hung-Chien Lin; Sham-Tsong Shiue; Yi-Ming Chou

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 661 KB
• Volume: 202
• Category: Article
• ISSN: 0257-8972
• DOI: 10.1016/j.surfcoat.2008.06.013

✦ Synopsis

The effect of radio-frequency powers on the properties of carbon coatings on optical fibers prepared by plasma enhanced chemical vapor deposition is investigated. The radio-frequency powers are selected at 150, 200, 250, 300, and 350 W. Results indicate that if the radio-frequency power increases from 150 to 350 W, the deposition rate of carbon coatings and carbon grain size increase. As the radio-frequency power changes from 150 to 200 W, the water contact angle of carbon coatings increases due to the increase of sp 3 -CH x bonding. Alternatively, as the radio-frequency power increases from 200 to 350 W, the water contact angle of carbon coatings gradually reduces which is resulted from the increase of surface roughness. As the radiofrequency power is 200 W, the carbon coating has the highest water-repellency and the excellent ability to sustain the low-temperature loading, so it is the best for production of the hermetic optical fiber coating.