Laser module with a built-in optical isolator, and method of adj

Details Laser module with a built-in optical isolator, and method of adj Laser module with a built-in optical isolator, and method of adj

1989-10-31

1990-05-15

Davie, James W.

Coherent light generators

Particular operating compensation means

350 9615, 350375, H01S 300

Patent

active

049264303

ABSTRACT:
A semiconductor laser module comprising a serial arrangement of a laser assembly for emitting a substantially collimated beam of light, an optical isolator assembly having an optical isolator housed in a tubular package for transmitting the collimated beam of light with less loss in a forward direction than in a reverse direction, and an optical fiber assembly having a lens for converging and directing the beam from the optical isolator assembly into an optical fiber. There is also disclosed a method of optimizing the forward loss and isolation characteristics of the optical isolator assembly through adjustment of its angular position about its optical axis which is set at an angle to that of the laser assembly. For such adjustment, not only the isolator assembly is made rotatable relative to the laser assembly, but also the optical isolator itself is made rotatable within limits relative to the tubular package of the isolator assembly.

REFERENCES:
patent: 4686678 (1987-08-01), Ohta et al.

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