Patent ID: 6012853
Filing Date: 2000-01-11
Classification: G02B,H01S

Abstract:
A fiberoptic signal transmission method comprising:generating a laser light signal in an optically isolated cavity with a semiconductor laser diode;emitting the signal from said semiconductor laser diode such that the signal is at a semiconductor diode frequency,directing the signal along an intended path from the laser diode toward a target end of an optical fiber within the cavity so that a portion of the signal enters the optical fiber, wherein a portion of the optical signal is inadvertently reflected from the intended path at the target end of the optical fiber and is scattered within the cavity; andabsorbing the scattered light from the target end of the optical fiber with a non-reflecting material of opaque walls, the non-reflecting material having a low reflectivity at the diode frequency, the walls defining the cavity, so as to avoid contamination of the signal portion within the fiber by the scattered signal portion.