| 385 / | HD | OPTICAL WAVEGUIDES |
| 53 | DF | WITH DISENGAGABLE MECHANICAL CONNECTOR {4} |
| 55 | DF | .~ Structure surrounding optical fiber-to-fiber connection {4} |
| 70 | DF | .~.~ With additional structure at or immediately surrounding each optical fiber end face {2} |
| 72 | ![]() | .~.~.~ Fiber end held in ferrule |