Abstract

A novel interferometric parallel spectral detection method for optical signals with finite time duration is proposed and experimentally demonstrated. Unlike the conventional schemes that detect temporal signals in the time domain, the proposed method recognizes the frequency spectral components of an optical signal in parallel by observing the spatial interference pattern formed between the optical signal and a multifrequency local light. The operating principle is experimentally confirmed by use of 4-bit-long 200-Mbit/s optical cells.

© 1993 Optical Society of America

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References

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  1. See, for example,A. Thomas, J. P. Coudreuse, M. Servel, presented at the Sixth International Switching Symposium, Florence, Italy, May 7–11, 1984.
  2. F. Ito, K. Kitayama, Opt. Lett. 17, 1152 (1992).
    [CrossRef] [PubMed]
  3. F. Ito, K. Kitayama, presented at the Nineteenth European Conference on Optical Communication, Montreux, Switzerland, September 12–16, 1993.
  4. J.-C. M. Deils, J. J. Fontaine, I. C. McMichael, F. Simoni, Appl Opt. 24, 1270 (1985).
    [CrossRef]
  5. K. Naganuma, K. Mogi, H. Yamada, IEEE J. Quantum Electron. 25, 1225 (1989).
    [CrossRef]
  6. D. J. Kane, R. Trebino, Opt. Lett. 18, 823 (1993).
    [CrossRef] [PubMed]

1993 (1)

1992 (1)

1989 (1)

K. Naganuma, K. Mogi, H. Yamada, IEEE J. Quantum Electron. 25, 1225 (1989).
[CrossRef]

1985 (1)

J.-C. M. Deils, J. J. Fontaine, I. C. McMichael, F. Simoni, Appl Opt. 24, 1270 (1985).
[CrossRef]

Coudreuse, J. P.

See, for example,A. Thomas, J. P. Coudreuse, M. Servel, presented at the Sixth International Switching Symposium, Florence, Italy, May 7–11, 1984.

Deils, J.-C. M.

J.-C. M. Deils, J. J. Fontaine, I. C. McMichael, F. Simoni, Appl Opt. 24, 1270 (1985).
[CrossRef]

Fontaine, J. J.

J.-C. M. Deils, J. J. Fontaine, I. C. McMichael, F. Simoni, Appl Opt. 24, 1270 (1985).
[CrossRef]

Ito, F.

F. Ito, K. Kitayama, Opt. Lett. 17, 1152 (1992).
[CrossRef] [PubMed]

F. Ito, K. Kitayama, presented at the Nineteenth European Conference on Optical Communication, Montreux, Switzerland, September 12–16, 1993.

Kane, D. J.

Kitayama, K.

F. Ito, K. Kitayama, Opt. Lett. 17, 1152 (1992).
[CrossRef] [PubMed]

F. Ito, K. Kitayama, presented at the Nineteenth European Conference on Optical Communication, Montreux, Switzerland, September 12–16, 1993.

McMichael, I. C.

J.-C. M. Deils, J. J. Fontaine, I. C. McMichael, F. Simoni, Appl Opt. 24, 1270 (1985).
[CrossRef]

Mogi, K.

K. Naganuma, K. Mogi, H. Yamada, IEEE J. Quantum Electron. 25, 1225 (1989).
[CrossRef]

Naganuma, K.

K. Naganuma, K. Mogi, H. Yamada, IEEE J. Quantum Electron. 25, 1225 (1989).
[CrossRef]

Servel, M.

See, for example,A. Thomas, J. P. Coudreuse, M. Servel, presented at the Sixth International Switching Symposium, Florence, Italy, May 7–11, 1984.

Simoni, F.

J.-C. M. Deils, J. J. Fontaine, I. C. McMichael, F. Simoni, Appl Opt. 24, 1270 (1985).
[CrossRef]

Thomas, A.

See, for example,A. Thomas, J. P. Coudreuse, M. Servel, presented at the Sixth International Switching Symposium, Florence, Italy, May 7–11, 1984.

Trebino, R.

Yamada, H.

K. Naganuma, K. Mogi, H. Yamada, IEEE J. Quantum Electron. 25, 1225 (1989).
[CrossRef]

Appl Opt. (1)

J.-C. M. Deils, J. J. Fontaine, I. C. McMichael, F. Simoni, Appl Opt. 24, 1270 (1985).
[CrossRef]

IEEE J. Quantum Electron. (1)

K. Naganuma, K. Mogi, H. Yamada, IEEE J. Quantum Electron. 25, 1225 (1989).
[CrossRef]

Opt. Lett. (2)

Other (2)

F. Ito, K. Kitayama, presented at the Nineteenth European Conference on Optical Communication, Montreux, Switzerland, September 12–16, 1993.

See, for example,A. Thomas, J. P. Coudreuse, M. Servel, presented at the Sixth International Switching Symposium, Florence, Italy, May 7–11, 1984.

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Figures (4)

Fig. 1
Fig. 1

Conceptual scheme of the interferometric method for detecting an optical signal with a finite time duration.

Fig. 2
Fig. 2

Preliminary experimental setup for observing the interference pattern formed between the incoming optical signal and the multifrequency local light.

Fig. 3
Fig. 3

Configuration of the multifrequency local light.

Fig. 4
Fig. 4

Experimental temporal waveforms and frequency spectra of the 4-bit 200-Mbit/s nonreturn-to-zero optical signals (top row) and the observed spatial interference patterns (bottom row). The row of solid curves at the bottom shows the intensity profile traces of the interference patterns.

Equations (10)

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E ( S ) ( t ) = m = 0 ± N a m ( S ) exp { j [ 2 π ( f 0 m T ) t k m x sin θ s k m z cos θ s + ϕ m ( S ) ] } ( T / 2 t T / 2 ) , = 0 ( otherwise ) ,
E ( LO ) ( t ) = n ± N a m ( LO ) exp { j [ 2 π ( f 1 + n T ) t k n x sin θ n k n z cos θ n + ϕ n ( LO ) ] } ,
I ( x ) T / 2 T / 2 | E ( S ) ( t ) + E ( LO ) ( t ) | z = 0 2 d t = m = 0 ± N | a m ( S ) | 2 + n ± N | a n ( LO ) | 2 + n = 0 ± N a n ( LO ) exp [ j ϕ n ( LO ) ] { m ± N b m n a m ( S ) exp [ j ϕ m ( S ) ] } × exp ( j q n x ) + c . c . ,
b m n = T sin π [ ( f 0 f 1 ) T + ( m n ) ] π [ ( f 0 f 1 ) T + ( m n ) ] , q n = 4 π f 0 sin ( θ S θ n 2 ) cos ( θ S + θ n 2 ) c .
A n exp ( j Φ n ) = m ± N b m n a m ( S ) exp [ j ϕ m ( S ) ] .
I ( x ) = I 0 + n = 0 ± N A n exp [ j ( q n x Φ n ) ] + c . c .
E ( t ) = n = 0 ± A n exp { j [ 2 π ( f 1 + n T ) t + Φ n ] } .
T / 2 T / 2 E ( t ) exp [ j 2 π ( f 0 + m T ) t ] d t = a m ( S ) exp ( j ϕ m ) .
q n 2 π n f 0 θ 1 c = n Ω ,
I ( x ) n = 1 N a n ( S ) cos [ n Ω x + ϕ n ( S ) ] .

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