Long cavity photonic crystal laser in FDML operation using an akinetic reflective filter

Abstract

A novel configuration of a Fourier domain mode locked (FDML) laser based on silicon photonics platform is presented in this work that exploits the narrowband reflection spectrum of a photonic crystal (PhC) cavity resonator. Configured as a linear Fabry-Perot laser, forward biasing of a p-n junction on the PhC cavity allowed for thermal tuning of the spectrum. The modulation frequency applied to the reflector equalled the inverse roundtrip time of the long cavity resulting in stable FDML operation over the swept wavelength range. An interferometric phase measurement measured the sweeping instantaneous frequency of the laser. The silicon photonics platform has potential for very compact implementation, and the electro-optic modulation method opens the possibility of modulation speeds far beyond those of mechanical filters.

Study on the effect of double-trench ridge waveguide structure on output characteristics of semiconductor FP laser

“…With the continuous improvement of the transmission distance and stability requirements of modern optical communication, people have put forward higher requirements for the stability of the fundamental transverse mode of the laser. With the development of molecular beam epitaxy [1] (MBE), metal-organic chemical vapor deposition [2] (MOCVD) and other technologies, researchers at home and abroad have proposed multi-quantum well structure [3] , planar coupling waveguide [4] , photonic crystal structure [5] , asymmetric large optical cavity [6] and other structures. These structures can make the laser obtain more stable mode output in the transverse direction perpendicular to the junction plane.…”

A Multichannel Superconductor-Based Photonic Crystal Optical Filter Tunable in the Visible and Telecom Windows at Cryogenic Temperature

“…Due to these features, it is possible to control and tune light in PhCs [4], thus opening a new perspective for information processing and technological applications such as chips [5,6], filters [7,8], lasers [9,10], waveguides [11], integrated photonic circuits, sensors [12,13] and thin film photovoltaic cells [14,15], to mention but a few. As is well known, there exist many sort of materials used to form tunable PhCs, such as semiconductors [16], metals [17], superconductors [18,19], metamaterials [20] and liquid crystals [21], among others.…”

Diseño de filtro óptico sintonizable en el infrarrojo cercano a temperaturas criogénicasas

“…Su uso permite controlar y sintonizar las frecuencias de ondas transmitidas, de tal forma que pueden ser usados como filtros ópticos, chips, láseres, guías de ondas, circuitos fotónicos integrados, sensores y células fotovoltaicas de película delgada, por mencionar solo algunas(Butler et al, 2020;Clementi et al, 2021;Delgado-Sanchez & Lillo-Bravo, 2020;Kaviani Baghbadorani & Barvestani, 2021;Li et al, 2020;Mbakop et al, 2020;Mehaney et al, 2021;Sakata et al, 2020;Shi et al, 2020;Soltani et al, 2020;Zheng et al, 2020).En la actualidad existen muchos materiales usados para fabricar cristales fotónicos sintonizables como semiconductores, metales, superconductores, metamateriales y cristales líquidos, entre otros(Aly et al, 2020;González et al, 2018González et al, , 2020Schlafmann & White, 2021;Segal et al, 2015;Zaky & Aly, 2020).En un trabajo previo se fabricó un cristal fotónico unidimensional basado en un superconductor de alta temperatura crítica y un ferroeléctrico para controlar la propagación de luz en la región del espectro visible(González et al, 2020). Como resultado, se propone la posible implementación de estos cristales en filtros y reflectores ópticos que pueden transmitir información a altas frecuencias y operar a temperaturas criogénicas.En la actualidad los principales medios de transmisión sin cable trabajan con ondas cuya frecuencia se encuentra en el espectro de radio-frecuencia (RF).…”