1. Berry R W et al: ’Optical fibre system trials at 8 Mbit/s and 140 Mbit/s’, IEEE Trans on Commun, 26, pp 1020–1027 (1978).
2. Stern J R et al: ’The characterisation of single-mode fibre links installed in operational duct’, 2nd Symposium on optical fibre measurements, Boulder (1982).
3. Stanley I W et al: ’The performance of experimental monomode transmission links’, Proc 8th ECOC, pp 447–451 (September 1982).
4. McDonna A P and Chidgey P J: ’Single-mode optical transmission experiments’, Fibre Optics ’84, SPIE, 374, pp 66–72 (1983).
5. Smith D R: ’Experimental comparison of two long wavelength receivers’, Proc 5th topical meeting on optical fibre communications, Pheonix (1982).