A fiber amplifier that generates nearly transform-limited sub-picosecond pulses and greater than 100 W average power at 1.3-GHz repetition rate is described. Modest stretching of the seed pulses allows the amplifier to be operated in the linear regime. The amplified and dechirped pulses exhibit excellent beam quality, and can be frequency-doubled to produce green pulses at 65 W average power. D...

We describe a continuous-wave master-oscillator power-amplifier system based on a distributed Bragg reflection diode laser and an Yb doped fiber amplifier. The observed optical spectrum of the amplified seed source can be tailored to arbitrary shapes and widths between 30 MHz and greater than 1 GHz by controlling the radio frequency modulation wave form of the injection current. © 2006 American...

We numerically model the performance of highpower 977-nm fiber lasers and amplifiers pumped at 915 nm, in which the Yb is doped in a ring inside the core of a high-ordermode (HOM) fiber. Light in the spatially coherent LP07 mode is amplified in the fiber, and then coupled to the LP01 mode by longperiod gratings. For the laser, it is found that parasitic oscillation on the 1023-nm four-level tra...

High power all fiber mid-IR supercontinuum (SC) generation in a ZBLAN fiber pumped by a 2 μm master oscillator power amplifier (MOPA) system is demonstrated. A semiconductor saturable absorber mirror (SESAM) passively mode-locked laser with pulse width of 26 ps at 1960 nm is used as the seed of the MOPA system. A laser spectrum extending from ~1.9 μm to beyond 2.6 μm is generated in a subsequen...

This paper describes the design and implementation of an advanced photonics experiment aimed at the undergraduate students’ level. The experiment uses erbium-doped fiber to implement three functions through slight modifications of the setup. The functions are a broadband light source, a multi-wavelength optical amplifier, and a tunable fiber laser. As part of an Optical Communication Systems co...

We demonstrate an all-fiber spatiotemporal mode-locked laser based on graded-index multimode fiber. Due to the high damage threshold of fiber devices, output single-pulse energy reach up 11.67 nJ. The beam quality at state is significantly improved compared with continuous wave as a result self-cleaning effect. By amplifying pulse in amplifier, power pulses can be obtained system MMFs.

It has been more than 20 years since fiber-optic communication became practicable, and there has been a continuing stream of technological breakthroughs. The increased diffusion of the Internet has seen the rapid introduction of dense wavelength division multiplexing (DWDM) systems. With the burgeoning increases in communications capacity in recent years 1), attention has been focused on Raman ...

We demonstrated 10-GHz all-optical clock recovery using an erbium-doped fiber laser incorporating an electro-absorption modulator and linear optical amplifier. Stable clock pulses with peak power of 200 mW and pulsewidth of 6 ps are obtained.

A two-stage fiber-based femtosecond amplification system is presented, based on chirped-pulse amplification in highly nonlinear regime. The amount of self-phase modulation is separately adjusted in each stage selecting the proper stretching ratio in order to compensate gain narrowing. Analytical design rules are validated using numerical simulations. Our experimental implementation leads to the...

The demand for optical networks with a high bit rate at a long transmission distance is growing at yearly basis [1,2]. The signal transmission in optical networks experiences propagation attenuations along a long span of optical fiber links, which in units of dB/km is defined by (10 / ) log( / ) α = − o in L P P , where in P is the input power to the fiber and o P denotes the output power at th...