Widely tunable fiber-coupled single-frequency Er-Yb:Glass laser

Abstract

A fiber-coupled tunable Er-Yb:glass minilaser is presented with output power of 40 mW. The laser can be stepwise tuned in single-frequency operation from 1530 to 1560 nm by compressing a fiber Bragg grating that provides selective feedback. Constant output power (fluctuation < 0.8 dB) over the full tuning range is demonstrated. The relative intensity noise spectrum was measured to be < 150 dB/Hz for frequencies > 2 MHz.

Linear and non-linear optical properties of Yb3+/Tm3+ co-doped alumino-silicate glass prepared by sol–gel method

“…Unfortunately, Tm has poor absorption at 980 nm and it is of no use for Tm-doped silica glasses. However, sensitization of Tm-doped glasses with Yb can increase the absorption at 980 nm as in the case of Er-doped glasses/fibers [4] and as the excited energy levels of Yb can trigger the Tm-ions to excite to the higher level and thus achieve the emission from Tm-ions. This can be further explained with the aid of a Fig.…”

Blue‐green light generation using high brilliance edge emitting diode lasers

“…Furthermore, the wavelength temperature drift is decreased to values below 10 pm/K. Tunability can be achieved by stretching or compressing the fiber [92].…”

Fabrication of a widely tunable fiber Bragg grating filter using fused deposition modeling 3D printing

“…As the Bragg wavelength changes in response to variations in surrounding conditions, such as temperature or strain, FBGs have been shown to be very useful as optical fiber sensors. Likewise, by modifying external parameters in a controlled manner one can design a tunable, or programmable, wavelength response with useful applications in, e.g., optical sensing [3][4][5], tunable laser sources [6,7,8] or spectroscopic analysis [9]. For many applications, a wide tunability, while maintaining the bandwidth of the grating wavelength is preferred.…”