Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Optical Switching using the Nonlinear Optical Loop Mirror

Not Accessible

Your library or personal account may give you access


Since the proposal of the nonlinear optical loop mirror (NOLM), or the Sagnac interferometer, about six years ago [1] and its first experimental demonstration [2], there has been a very rapid progress in the field of all-optical switching using the NOLM. The reason for this is the development of erbium doped fiber amplifiers (EDFA), which allow the signals to reach power levels required for performing switching based on fiber nonlinearities. The main incentive for studying the NOLM, as well as other fiber based switches that rely on the third order nonlinear susceptibility, is that the intrinsic nonlinear response time is extremely fast. The major application of the NOLM which has been studied so far is the all-optical demultiplexer (or a logic AND gate), but other possible applications include: exclusive-OR gates [3], all-optical sampling [4], loop memories [5], and all-optical data regeneration [6]. Apart from the NOLM, two other all-optical techniques for demultiplexing high-speed data using fiber nonlinearities have been demonstrated. In the soliton dragging gate [7], the timing of the data pulses is controlled by a gating pulse, i.e. demultiplexing is obtained by moving the data in and out of a prescribed bit slot. In the third optical demultiplexer, which is based on optical four-wave mixing [8], the gating pulses create new frequency components,one of which is filtered out to give the demultiplexed data. While most early NOLM experiments were been made at relatively low pulse repetition rates and with high power solid state lasers, recent experiments have shown the feasibility of using the NOLM with semiconductor lasers for demultiplexing ultrahigh speed (> 30 Gb/s) data [9-12]. This is important, since the NOLM is not likely to be implemented at lower speeds where standard electronic circuits are capable of handling the data.

© 1993 Optical Society of America

PDF Article
More Like This
100 Gbit/s All-Optical Demultiplexing using Nonlinear Optical Loop Mirror with Gating-Width Control

K. Uchiyama, H. Takara, S. Kawanishi, T. Morioka, T. Kitoh, and M. Saruwatari
TUB2 Optical Amplifiers and Their Applications (OAA) 1993

Nonlinear Loop Mirrors for All Optical Switching

K. J. Blow, J. K. Lucek, and K. Smith
AOS203 Photonics in Switching (PS) 1993

Ultrahigh-speed all-optical technologies

Peter A. Andrekson
WC3 Optical Fiber Communication Conference (OFC) 1993


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access Optica Member Subscription

Select as filters

Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved