Optical waveguides – With optical coupler – Input/output coupler
Patent
1997-10-09
2000-06-27
Palmer, Phan T. H.
Optical waveguides
With optical coupler
Input/output coupler
385 27, 385 30, 385 42, 372 99, G02B 626
Patent
active
060816376
ABSTRACT:
A method of monitoring power of laser-radiation laterally coupled from a diode-laser into an optical-fiber is disclosed. An input-end of the optical-fiber has a polished surface inclined at an angle to a longitudinal axis of the fiber. The input-end of the optical-fiber is arranged proximate an output-facet of the diode-laser such that radiation emitted from the facet is transmitted laterally into the optical-fiber and is incident internally on the polished surface. A fractionally-transmitting reflective coating is provided on the polished surface, whereby a fraction of the laser-radiation incident on the polished surface is transmitted out of the optical-fiber. A radiation-detector responsive to the laser-radiation is located in a position to receive the transmitted fraction of laser-radiation, thereby generating a signal which is interpreted as measure of power of the laser-radiation coupled into the optical-fiber.
REFERENCES:
patent: 4130343 (1978-12-01), Miller et al.
patent: 5734766 (1998-03-01), Flint
patent: 5771324 (1998-06-01), Hargris
"Technique for Alignment of Semiconductor Lasers to Bevelled Single-Mode Fibres," B.M. Foley, P. Melman, K.T. Vo, Electronic Letters, vol. 26, No. 25, Dec. 6, 1990, pp. 2118-2120.
"Simple side coupler for coupling between laser diode and single-mode optical fiber," K.S. Lee & F.S. Barnes, Applied Optics, vol. 26, No. 12, Jun. 15, 1987, pp. 2294-2296.
Coherent Inc.
Palmer Phan T. H.
LandOfFree
Arrangement for monitoring power of diode-laser-radiation latera does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Arrangement for monitoring power of diode-laser-radiation latera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement for monitoring power of diode-laser-radiation latera will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1791037