Polarization control of bidirectionally transmitted beams by a s

Details Polarization control of bidirectionally transmitted beams by a s Polarization control of bidirectionally transmitted beams by a s

1990-05-23

1991-05-07

Sikes, William L.

350 9616, G02B 626, G02B 642

Patent

active

050131168

ABSTRACT:
In an optical communication system where first and second transmitter devices (12, 16) bidirectionally transmit first and second signal beams through an optical fiber (11) and first and second receiver devices (13, 17) receive the second and the first signal beams, respectively, a polarization control system comprises a polarization control unit (21) between the optical fiber and the first transmitter and receiver devices and a controller (23) for controlling the polarization control unit by a detected signal produced by the first receiver device so as to supply the second signal beam to the first receiver device with a constant reference polarization state. The first signal beam may be an FDM signal beam. In this event, the second receiver device comprises tunable receivers (R.times.1/100) which may be installed in a hub together with the second transmitter device and connected to terminal units through metal cables. Preferably, the first transmitter device generates the first signal beam with a polarization state adjusted either parallel or orthogonal to the reference polarization state. More preferably, the first and the second signal beams should have frequencies determined in consideration of polarization dispersion.

REFERENCES:
patent: 4932739 (1990-06-01), Islam
patent: 4971417 (1990-11-01), Krinsky et al.

Affiliated with

Also associated with

Rating

Polarization control of bidirectionally transmitted beams by a s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polarization control of bidirectionally transmitted beams by a s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polarization control of bidirectionally transmitted beams by a s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-935120