Abstract: In an optical fiber turnaround, first and second optical fiber cores are configured to transmit light bidirectionally along a transmission axis between proximal and distal ends of the first and second optical fiber cores. A reflector component is positioned at the distal ends of the first and second optical fiber cores. The first core, second core, and reflector component are configured to provide a bidirectional routing path, wherein light energy travels from the proximal end of one of the first and second cores towards the reflector component, and travels back from the reflector component along the other of the first and second cores.

Abstract: A knowledge management system captures, stores, manages, and applies rules for modeling geometric objects and related non-geometric attributes. The knowledge management system controls a computer-aided design system for modeling a geometric structure. The knowledge management system includes a knowledge management application in communication with the computer-aided design system through an application program interface. The knowledge management system also includes a central database managed by a knowledge storage application for maintaining rules and other related information. The knowledge management system also includes a knowledge acquisition application for generating rule programs for storage in the central database. The rules can relate to geometric and non-geometric attributes of the model.

Abstract: Interactive rule changes made during a run time are applied to a computer-aided design model. An in-memory model is produced from a set of rules, and instructions are generated for a computer-aided design system based on the in-memory model. The in-memory model is updated based on interactive rule changes. The set of rules may be stored in a database, and the set of rules in the database may be selectively updated based on the interactive rule changes. Class files may be generated based on the set of rules, and the class files may be selectively updated based on the interactive rules changes.