Fiber bragg grating-circulator systems having reduced ASE

Details Fiber bragg grating-circulator systems having reduced ASE Fiber bragg grating-circulator systems having reduced ASE

1997-02-26

1998-09-22

Ngo, John

Optical waveguides

With optical coupler

Input/output coupler

385 15, C02B 626

Patent

active

058127127

ABSTRACT:
A light source system for fiberoptic networks is presented. The system has a laser light source, an optical circulator, an optical fiber section having at least one fiber Bragg grating, and an output port. The optical circulator receives light through its first port and passes the light to the circulator's second port and light received through the second port is passed to the circulator's third port. The first port is connected to the light source. The optical fiber section is connected to the second port and the fiber Bragg grating has a reflectivity centered about a predetermined wavelength. The third port, which is unconnected to the light source, is connected to the output port of the system. Light from the output port has the predetermined wavelength with significantly reduced ASE.

REFERENCES:
patent: 5283686 (1994-02-01), Huber
patent: 5561546 (1996-10-01), Esman
patent: 5600473 (1997-02-01), Huber
patent: 5706375 (1998-01-01), Mihailov et al.
Pan et al., "Tunable Er.sup.3+ -doped fibre ring laser using fibre grating incorporated by optical circulator or fibre coupler," Electronic Letters (1995) 31:1164-1165.

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