Active optical fibre star coupler
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| Title: | Active optical fibre star coupler |
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| Patent Number: | 4,863,231 |
| Publication Date: | September 05, 1989 |
| Appl. No: | 07/315,853 |
| Application Filed: | February 27, 1989 |
| Abstract: | An active optical fibre star coupler having a length of amplifying optical fibre (1) optically connected at one end to a wavelength combining coupler (2) and at the other end to via a beam expanding element (3) to a set of output optical fibres. |
| Inventors: | Byron, Kevin C. (Bishop's Stortford, GB3); Bricheno, Terry (Great Sampford, GB3); Fielding, Alan (Sawbridgeworth, GB3); Pitt, Nicholas J. (Harlow, GB3); Baker, Robert A. (London, GB3) |
| Assignees: | STC PLC (London, GB2) |
| Claim: | We claim |
| Claim: | 1. An active optical fibre star coupler having a length of amplifying optical fibre optically connected at one end to a wavelength combining coupler and at the other end via a beam expanding element to a set of output optical fibres. |
| Claim: | 2. An active optical fibre star coupler according to claim 1 wherein the beam expanding element is a length of tapered optical preform. |
| Claim: | 3. An active optical fibre star coupler according to claim 2 wherein the wavelength combining coupler is a fused fibre coupler. |
| Current U.S. Class: | 350/9616; 330/4; 455/617 |
| Current International Class: | G02B 514 |
| Patent References Cited: | 4220396 September 1980 Antell 4473270 September 1984 Shaw 4515431 May 1985 Shaw et al. 4546476 October 1985 Shaw et al. 4553238 November 1985 Shaw et al. 4560246 December 1985 Cotter 4674830 June 1987 Shaw et al. 4723824 February 1988 Shaw et al. 4801185 January 1989 Bricheno 4817207 March 1989 Smith et al. |
| Primary Examiner: | Sikes, William L. |
| Assistant Examiner: | Ullah, Akm E. |
| Attorney, Agent or Firm: | Lee & Smith |
| Accession Number: | edspgr.04863231 |
| Database: | USPTO Patent Grants |
| Abstract: | An active optical fibre star coupler having a length of amplifying optical fibre (1) optically connected at one end to a wavelength combining coupler (2) and at the other end to via a beam expanding element (3) to a set of output optical fibres. |
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