1. Low loss single mode fiber interconnections for free-space optical switches based on diffractive microlens arrays
- Author
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Mohammad R. Taghizadeh, Leon Bonnel, Philippe Gravey, Andrew J. Waddie, Télécom Bretagne, Bibliothèque, Département Optique (OPT), and Université européenne de Bretagne - European University of Brittany (UEB)-Télécom Bretagne-Institut Mines-Télécom [Paris] (IMT)
- Subjects
Microlens ,Diffraction ,Interconnection ,Materials science ,[SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic ,business.industry ,Bandwidth (signal processing) ,Single-mode optical fiber ,Physics::Optics ,Optical switch ,Wavelength ,Optics ,[SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic ,Optoelectronics ,Insertion loss ,business - Abstract
International audience; Diffractive microlens arrays with up to 16 phase levels and 0.75 or 1.5 mm pitch have been fabricated to interconnect single mode fiber arrays (including extended mode fibers) in free-space switches. The fiber-to-fiber insertion loss can be in the 2 to 3 dB range at distances up to one meter, with only small (0.2 dB) inter-channel dispersion for one-dimension links. For two-dimension interconnections, the use of extended mode fibers could relax the packaging constraints and reduce the wavelength sensitivity, providing a bandwidth of several tens of nanometers, suited to optical cross-connects.
- Published
- 1999