Simultaneous transmission of LED and laser signals over single m

Details Simultaneous transmission of LED and laser signals over single m Simultaneous transmission of LED and laser signals over single m

1987-07-13

1989-04-25

Sikes, William L.

Cryptography

Key management

Having particular key generator

455610, 455611, G02B 628

Patent

active

048242012

ABSTRACT:
At the transmitting end of an optical transmission system, a wide linewidth LED (31) is intensity modulated by a first digital information signal and a narrow linewidth DFB (Distributed Feedback) laser (32) is frequency modulated by a second digital information signal and the two modulated optical signals are combined (33) for transmission over a single mode optical fiber (34). At the receiving end, the intensity modulating digital signal is recovered from the received optical signal by a photodetctor (52). The frequency modulating digital signal is recovered by a coherent receiver (53) which includes a local oscillator (55) the output of which is optically combined (54) with the received optical signal. A photodetector (56) converts this combined optical signal to an electrical IF signal, and an IF demodulator (57) reconstructs the second digital signal therefrom.

REFERENCES:
patent: 3986020 (1976-10-01), Kogelnik
patent: 4302835 (1981-11-01), McMahon
patent: 4307468 (1981-12-01), Beasley et al.
patent: 4369524 (1983-01-01), Rawson et al.
patent: 4403139 (1983-09-01), De Loach, Jr.
patent: 4427895 (1984-01-01), Eng
patent: 4504974 (1985-03-01), Rademaker
patent: 4504976 (1985-03-01), Beaudet
patent: 4561117 (1985-12-01), Kuhn
patent: 4567586 (1986-01-01), Koeck
patent: 4581730 (1986-04-01), Ozeki et al.
patent: 4648134 (1987-03-01), Stewart
patent: 4704741 (1987-11-01), Shikada
patent: 4706300 (1987-11-01), Minemura et al.

Affiliated with

Also associated with

Rating

Simultaneous transmission of LED and laser signals over single m does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Simultaneous transmission of LED and laser signals over single m, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simultaneous transmission of LED and laser signals over single m will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1191149