monomodeadj.
/ˈmɒnə(ʊ)məʊd/, U.S. /ˈmɑnəˌmoʊd/ 1. Physics. Designating or relating to lasers in which there is a single pattern of vibration of the electromagnetic field within the laser cavity.
ΚΠ
1968 IEEE Jrnl. Quantum Electronics 4 874/1 A monomode carbon dioxide laser..has been achieved by control of the cavity frequency and of the gain.
1969 Appl. Physics Lett. 14 282/1 This letter reports a new method of generating a monomode giant pulse from a neodymium-doped glass laser.
1993 Jrnl. Appl. Physics 73 7141/1 The single-mode stability is strongly affected by the end facet phases indicating a reduced yield of monomode devices.
2. Telecommunications. Designating or relating to light transmission through optical fibres in which light waves follow a single propagation path. monomode fibre n. an optical fibre which operates in a monomode manner as a result of the similarity between its internal diameter and the wavelength of the light it carries.
ΚΠ
1971 Wissensch. Ber. AEG-Telefunken 44 ii. (Abridgements) The possibility of producing monomode glass fibre waveguides.
1984 Australian 6 Nov. 25/4 Existing networks of mono-mode fibres will be able to cope with demands on their space for a few years yet.
1986 G. Langley Telecommunications Primer (ed. 2) xxi. 61 Fibres with very small diameter cores are called monomode (because only a single mode of transmission is possible).
1986 R. L. Brewster Telecommunications Technol. ix. 168 For high-speed systems using monomode fibre, a coherent light source is necessary.
This is a new entry (OED Third Edition, December 2002; most recently modified version published online March 2022).
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adj.1968