Non-linear, real-time, micrometer resolution optical time domain

Details Non-linear, real-time, micrometer resolution optical time domain Non-linear, real-time, micrometer resolution optical time domain

1993-08-18

1994-12-20

Turner, Samuel A.

Optical: systems and elements

Optical amplifier

Particular pumping type

356349, G01B 902

Patent

active

053750110

ABSTRACT:
By using a non-linear guided wave optical time domain reflectometry (OTDR) technique, specific features of an optoelectronic integrated device may be probed by detecting the reflections and back-scattering of a short light pulse along a waveguide interconnect. An integrated optical correlator in the form of a second harmonic generation (SHG) waveguide and a photodetector array detects and measures ultra-short pulses for optical ranging. Used with a standard CCD camera, the direct images of the autocorrelation of compressed Nd-Yag pulses (FWHM of 5 ps) have been monitored at video rates. Used with a cooled CCD camera for OTDR, reflections from samples have been observed with an interfeature resolution of about 0.15 mm in GaAs, limited by the FWHM of the laser pulses. Appropriate signal processing can increase the positioning resolution to better than 50 .mu.m. Additional applications are demonstrated, including the monitoring of fiber lengths (to within 30 .mu.m in real time) and temperature sensing.

REFERENCES:
patent: 4342907 (1982-08-01), Macedo et al.
patent: 4443700 (1984-04-01), Macedo et al.
patent: 5051617 (1991-09-01), Normandin et al.
patent: 5082340 (1992-01-01), Aoshima et al.
patent: 5111466 (1992-05-01), Normandin et al.

Affiliated with

Also associated with

Rating

Non-linear, real-time, micrometer resolution optical time domain does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-linear, real-time, micrometer resolution optical time domain, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-linear, real-time, micrometer resolution optical time domain will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2388814