Optical frequency marking method and different frequency channel

Details Optical frequency marking method and different frequency channel Optical frequency marking method and different frequency channel

1992-09-21

1994-11-22

Chilcot, Jr., Richard E.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359110, 359182, 356349, H04B 1700

Patent

active

053673964

ABSTRACT:
In an optical frequency marking method and a frequency channel communication network using this method, an optical reference frequency is scanned across a scanning band to produce frequency coincidences with a monitored frequency which constitutes the frequency to be marked. During each scanning half-cycle it effects a go path and a return path according to a known law to produce a go frequency coincidence and a return frequency coincidence. A marker interval is measured which is the time elapsed between said two coincidences. This interval marks the monitored frequency and enables said frequency to be locked by comparison with a set point interval. The invention finds a particular application in the marking and stabilization of carrier frequencies of a closely-spaced different frequency channel network.

REFERENCES:
patent: 4856899 (1989-08-01), Iwaoka et al.
Glance et al, "Densely Spaced FDM Coherent Star Network With Optical Signals Confined to Equally Spaced Frequencies", J of Lightwave Technology v 6 n 11 (Nov. 1988), pp. 1770-1781.
Maeda, "Frequency Stabilization Techniques for Coherent Lightwave Systems", SPIE v 1175 Coherent Lightwave Communications (1989), pp. 4-11.
Kasovsky et al, "Experimental Relative Frequency Stabilization of a Set of Lasers Using Optical Phase-Locked Loops", IEEE Photonics Technology Letters v 2 n 7 (Jul. 1990), pp. 516-518.
Shimosaka et al, "THG3 Frequency Locking of FDM Optical Sources using Widely Tunable DBR LDs", OFC 1988/Thursday Morning, p. 168.
Bachus et al, "Coherent Optical-fibre Subscriber Line", Electronics Letters, v 21 n 25/26 (Dec. 1985)), pp. 1203-1205.

Affiliated with

Also associated with

Rating

Optical frequency marking method and different frequency channel does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical frequency marking method and different frequency channel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical frequency marking method and different frequency channel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1994540