Applications of Photonic Technology by Jack B. Terry (auth.), George A. Lampropoulos, Jacek

By Jack B. Terry (auth.), George A. Lampropoulos, Jacek Chrostowski, Raymond M. Measures (eds.)

In this booklet we current a photo of the cutting-edge in photonics in 1994, displaying standard purposes and rising new ones; discussing the main applied sciences at the back of those functions, their obstacles, and clients. The articles during this publication are prolonged types of the papers provided on the first overseas convention on purposes ofPhotonic expertise (ICAPT'94), held in Toronto, Canada, on June 21-23, 1994. Photonics has been well-known as one of many key applied sciences for the 21 st century, as electronics was once the know-how of the 20 th centrury and electric engineering replaced the lifetime of humans within the nineteenth century. based on the hot file of the association for financial Cooperation and improvement in Paris (OECD), the marketplace for photonics will develop dramatically within the subsequent 10 years with an anticipated world-wide expenditure people $230 billion from a few US $30 billion in 1992. The explosion of knowledge expertise used to be the biggest driver for the deployment of photonic know-how. It created insatiable call for for ever-higher information transmission and processing premiums, which can't be sustained by means of electronics by myself. Boosted by means of the enonnous funding of the telecommunications and safety industries, the call for for photonics (or optoelectronics) is gradually expanding. it truly is solidly proven within the lengthy­ haul communications, laser printers and CD-ROMs.

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Each user station has access to one LON and the RON. As in [2], the usable optical bandwidth is divided into local and remote wavebands. Each of these is then further divided into a set of local and remote wavelength channels. The channel controllers for the local and remote wavelengths have the same functionality as in DCCN [3]. They provide assistance with media access and synchronization information for their associated stations. A 3 x 3 wavelength cross-connect links each LON into the RON. 2 1 stn/LON-Loc stn/LON-Rem stn/LON-Loc stn/LON-Rem stn/LON-Loc stn/LON-Rem eeeeeeaee -<>-----+--· · 0 ·· · · -·-x-----_· ..

Lm DFB lasers frequency-locked to acetylene gas or to a rubidium vapor optically pumped. They both show a frequency stability of about 2x 10- 10 for averaging time of about 100 s. 29 free-running laser 1E-8 z o o o o o ~ ~ Cl o 0 o o • • • • • • 1E-9 g Cl Z ~ o o • • Cl ~ o o • frequency-locked laser 1E-10 • • • • • • • • 1E-11 1E-4 1E-3 1E-2 1E-1 AVERAGING TIME 1E1 1E2 1E3 [sl Figure 5. Lasers frequency stability measurements in the time domain: 0 free-running, • frequency-locked to rubidium, • frequency-locked to acetylene.

Boucher, B. Villeneuve, M. Tetu, M. Breton, "Calibrated Fabry-Perot etalon as an absolute frequency reference for OFDM communications", IEEE Photon. ' Letters, Vo!. 7, July 1992. 3. M. Tetu, N. Cyr, C. Gamache, R. Boucher, M. Breton, P. Tremblay, "Ensemble of laser sources with evenly spaced absolute frequencies for optical division multiplexed systems", SPIE, Proc. 1837, paper 29, Boston, 1992. 4. B. Villeneuve, R. Boucher, M. Tetu, M. Breton, "Frequency stabilization of multiple transmitters and receivers in OFDM networks", Photonics'92, pp.

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