A passively mode locked thulium doped fiber laser using bismuth telluride deposited multimode interference. (12th April 2016)

• Record Type: Journal Article
• Authors: Jung, M; Lee, J; Song, W; Lee, Y L; Lee, J H; Shin, W
• Is Part Of: Laser physics letters. Volume 13:Number 5(2016:May)
• Publication Date: 2016-04-12
• Subjects: fibre lasers -- mode locking -- tuning -- modulation; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-2011/13/5/055103
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: We proposed a multimode interference (MMI) fiber based saturable absorber using bismuth telluride at ∼2 μ m region. Our MMI based saturable absorber was fabricated by fusion splicing with single mode fiber and null core fiber. The MMI functioned as both wavelength fixed filter and saturable absorber. The 3 dB bandwidth and insertion loss of MMI were 42 nm and 3.4 dB at wavelength of 1958 nm, respectively. We have also reported a passively mode locked thulium doped fiber laser operating at a wavelength of 1958 nm using a multimode interference. A temporal bandwidth of ∼46 ps was experimentally obtained at a repetition rate of 8.58 MHz.