Simulation of 4 × 4 light coupling to a single-mode fiber

Abstract

The novel design of a microlens array is presented for the analysis of a 4 ϫ 4 nanoscale vertical-cavity surface-emitting laser (VCSEL) array, which launches parallel light to a single-mode fiber (SMF) with a length of 100 cm. These results are useful for realization of high-density information storage and information transfer.

16×16 Mirror type optical switch with integrated fiber alignment and steady switching state

“…Generally, the insertion loss increases with the subscript of the mirror. For the M (16,16) which is with the longest optical path, the insertion loss is quite large. This is because the input light beam is scattered gradually along with the optical path to the mirror when it is larger than 25 mm.…”

“…Therefore, this model can be used to evaluate the function performance and package tolerances of the device. Based on this model, the insertion loss can be calculated theoretically using the formula derived from [13][14][15][16] …”

“…The micromirrors supported by torsion beams across the through-holes are located at the crossings by 45°inclination to the light beams and arranged in a matrix [from M (1,1) to M (16,16)] to compose a 16 ϫ 16 optical switch. In this work, the mirror with the shortest total distance between the mirror and the two fibers is defined as M (1,1) while the one with the longest distance is defined as M (16,16). When transmitting to the mirror elements through the cross deep grooves, the incident light beams can propagate in their original directions without interruption under the horizontal "OFF" micromirrors, and can be reflected by the vertical "ON" micromirrors.…”

Pixel-to-Pixel Fiber-Coupled Emissive Micro-Light-Emitting Diode Arrays

“…Distinguishing from the use of a 30 000-channel multi-core imaging fiber in the demonstration by Xu et al [7], our fiber-coupling system is further optimized, requiring just as many fiber strands as there are LED pixels without loss of resolution. Apart from imaging purposes, this fiber-coupled LED system can be adapted for multichannel data transmission [8], a task which has traditionally been fulfilled by laser sources, or for photoexcitation of biological materials [7]. The divergent nature of LED emission results in inevitable crosstalk between adjacent pixels.…”

37.2: Fiber‐Coupled Emissive Micro‐Light‐Emitting Diode Arrays

“…At the output end, the signals can be projected for imaging purposes. Besides imaging, this system can be adapted for data transmission [7], a task which has traditionally been fulfilled by laser sources, or for photoexcitation of biological materials [8]. The divergent nature of LED emission results in inevitable crosstalk between adjacent pixels.…”