Fully integrated optical isolators for space division multiplexed (SDM) transmission

Abstract

A micro-optic collimator assembly represents an important platform for the realization of many commonly used fiber optic components and devices including optical isolators, circulators, gain flattening filters, and so on. In this paper, we investigate the incorporation of space division multiplexing (SDM) fibers (particularly, few mode fibers and multicore fibers) in a micro-optic collimator assembly and develop a technology base to provide fully integrated SDM components. A few exemplary SDM fiber isolators (e.g., 3 or 6-moded fiber isolator and a 32-core multicore fiber isolator) are successfully fabricated with low insertion loss and low mode (or core) dependent losses. Improved sharing of the functional optical element and significant device integration is efficiently achieved in these devices as will be required to ultimately realize the anticipated cost reduction benefits of SDM technology.

High Spatial Density 6-Mode 7-Core Fiber Amplifier for L-Band Operation

“…For example, a fully integrated 32-core MCF amplifier [10] has been demonstrated in a cladding pumped configuration with the aid of two key SDM fiber components (i.e. an integrated SDM isolator [11] and a side pump coupler [12]). The side pump coupler allows low-cost multimode pump radiation to be coupled into the active fiber and hence the SDM amplifier to be directly spliced to its matching transmission fiber.…”

Multiport Fiber Optic Beam Splitters for Space Division Multiplexed (SDM) Systems

“…Very recently, we have demonstrated a compact approach to SDM fiber components using micro-optic collimator technology [10]. In principle, any type of SDM fiber can be integrated in to such an assembly and a high-density 32-core isolator has previously been successfully demonstrated with reasonable optical loss (< 2 dB for all cores).…”

Machine learning‐oriented resource allocation in C + L + S bands extended SDM–EONs

“…Chatterjee et al presented a comprehensive survey summarising fragmentation problems and techniques to overcome various fragmentation issues in EON [25]. Jung et al presented the design of a completely integrated optical isolator for SDM transmission [26]. The authors employed the micro-optic collimator assembly and integrated isolator with low integrated losses [26].…”

“…Jung et al presented the design of a completely integrated optical isolator for SDM transmission [26]. The authors employed the micro-optic collimator assembly and integrated isolator with low integrated losses [26]. Yao et al presented ML-oriented recourse optimisation considering the possibility of immediate and advanced reservations in SDM-EON.…”