10 GHz Mode-Locked Multiple-Wavelength Fiber Laser

Monolithic Multi-Colour 40 GHz Mode-Locked Laser Array

“…The shortest pulse widths are between 2.63 and 2.85 ps. Multi-wavelength mode-locked lasers are ideal candidates for high speed optical sampling, photonic microwave systems and next generation optical communication systems [1,2]. Compared to their hybrid integrated module counterparts consisting of several discrete devices, monolithically integrated mode-locked distributed Bragg reflector (DBR) laser diode (MLDLD) arrays can potentially reduce system costs by simplifying optical alignment and packaging processes and by improving the energy efficiency by eliminating multiple coupling losses into fibers.…”

Spectrum research on the passive mode-locked $$\hbox {Yb}^{3+}$$ Yb 3 + -doped fiber laser

“…Stable multi-wavelength mode-locked fiber lasers are particularly useful in fiber-optical sensing, optical instrumentation, microwave photonic systems, optical signal processing, wavelength-division-multiplexing transmission systems and so on Pudo and Chen (2003), Lou et al (2004), Chen et al (2000), Gong et al (2005), (2006), Li and Chan (1998), Yao et al (2001), Hayahi and Yamashita (2003), Bellemare et al (2000), Wey et al (1997), , Vlachos et al (2000), Mielke et al (2003), Tu et al (2007), Fenga et al (2006), Yeh et al (2007), Schultz et al (2009), Okhotnikov et al (2003, Kivist et al (2008), Zhe et al (2009), Song et al (2009a), Song et al (2009b), due to the numerous advantages including the generation of narrow high-repetition-rate pulse trains at multiple wavelengths, high power, low noise and the compatibility with other fiber-optic components. Many different mode-locked multi-wavelength fiber lasers have been reported in the last few years.…”

“…Many different mode-locked multi-wavelength fiber lasers have been reported in the last few years. Previously, room-temperature multi-wavelength lasing in an actively mode-locked erbium-doped fiber ring laser (ML-EDFRL) was demonstrated by use of multiple gain media in the laser cavity Pudo and Chen (2003), temporal-spectral multiplexing Lou et al (2004), flattening the gain spectrum Chen et al (2000),or the inter-channel multiple four-wave mixing Gong et al (2005). However, these designs are somewhat complex or have poor tunability.…”

Multi-wavelength mode-locked fiber laser

“…Although the generation of mode-locked ultra-short pulses of an EDFL is well known, there exist great challenges to apply the ML-EDFL to multi-wavelength (MW) optical communications due to its stability and temporal-spectral properties [3]. Previously, various techniques to generate MW-ML-EDFL have been proposed [4][5][6][7][8]. Due to the homogeneously broadened gain property, many 2-or 4-wavelength EDFLs are developed with wavelength spacing larger than homogenous linewidth (~3.5 nm) to overcome gain competitions [3][4][5].…”

“…Previously, various techniques to generate MW-ML-EDFL have been proposed [4][5][6][7][8]. Due to the homogeneously broadened gain property, many 2-or 4-wavelength EDFLs are developed with wavelength spacing larger than homogenous linewidth (~3.5 nm) to overcome gain competitions [3][4][5]. Although a MW-EDFL with 16 wavelengths has been presented by cooling an EDF to 77 K using liquid nitrogen [9], the increased complexity and cost make it impractical to many applications.…”