FIBER optics has undoubtedly had a profound impact on the
communications industry [1]. This can be traced back to
the seminal papers of Kao and Hockham, and Simon and Spitz
[2], [3], who basically appreciated in the early to mid 1960s that
optical signals could be transmitted along glass or silica fibers
with a loss potentially below that experienced in coaxial copper
cables. Further, unlike copper where skin effect increases loss
with baseband modulation frequency, the loss in optical fibers
could be maintained for all conceivable modulation frequencies.
A little while later, Dyott [4] observed that there were regions
of zero dispersion in the transmission characteristic of silica.
The rest is well-documented history brilliantly encapsulated in
Hecht’s book [1].
But fiber optics was not new in 1965. Glass fibers had already
appeared in ornamental lamps and the basic ideas of the dielectric
waveguide were well established. Using optical fibers to
guide light to and from a place at which a measurement was to be
made had already emerged and had gone from concept to practice.
The first patents had been filed on fiber-optic sensing and
had emerged as a tentative product [5] described in the literature.
At around the same time, Eli Snitzer’s ever-creative intellect
was proposing using fiber optics to transmit phase-modulated
FIBER optics has undoubtedly had a profound impact on the
communications industry [1]. This can be traced back to
the seminal papers of Kao and Hockham, and Simon and Spitz
[2], [3], who basically appreciated in the early to mid 1960s that
optical signals could be transmitted along glass or silica fibers
with a loss potentially below that experienced in coaxial copper
cables. Further, unlike copper where skin effect increases loss
with baseband modulation frequency, the loss in optical fibers
could be maintained for all conceivable modulation frequencies.
A little while later, Dyott [4] observed that there were regions
of zero dispersion in the transmission characteristic of silica.
The rest is well-documented history brilliantly encapsulated in
Hecht’s book [1].
แต่ไฟเบอร์ออปติกไม่ใหม่ในปี 1965 ใยแก้วได้
ปรากฏในโคมไฟประดับและความคิดพื้นฐานของท่อนำคลื่นไดอิเล็กตริก
ขึ้นดี การใช้เส้นใยแก้วนำแสง
แนะนำแสงและจากสถานที่ที่เป็นวัดก็จะทำให้ได้
เกิดขึ้นและหายไปจากแนวคิดสู่การปฏิบัติ .
สิทธิบัตรครั้งแรกมีการยื่นในการตรวจจับและ
ิตhad emerged as a tentative product [5] described in the literature.
At around the same time, Eli Snitzer’s ever-creative intellect
was proposing using fiber optics to transmit phase-modulated
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