FIBER OPTIC MEASURING INSTRUMENTS

OTDR

1. INTRODUCTION

 The business of fiber optic measurement instruments in flourishing: new instruments offering better performance and facilities are being developed all the time. This chapter on measuring instruments therefore deals with general principles.

  Fiber Optic Measuring Instruments.

Generally, three types of measuring instrument are used when optical fiber cable is installed:

·        Optical Time Domain Reflectometer (OTDR)

·        Stabilized light source (laser diode module)

·        Optical power meter with optical sensor.