LED spectral slicing for single-mode local loop applications

High temperature stability, low coherence and low relative intensity noise semiconductor sources for interferometric sensors

“…Spectral slicing as a means to precisely define the operating wavelength has been studied in detail in communication systems [11,12] and the same approach can be applied in sensor applications. The precisely defined ITU grid in a DWDM communication channel stimulated development of extremely stable filters.…”

Staying coherent after kent: From optical communications to biomedical optics

“…Generation of broadband light was at the heart of using optical coherence as a discrimination mechanism in photonic CDMA, so it was natural that I take an interest in its generation via amplified spontaneous emission and optical amplification. Slicing broadband light had been proposed in the 1980s as an effective means of low-cost wavelength-division multiplexing (WDM) [43]. I started working with my PhD student Warwick Holloway on this and we were one of the first groups to demonstrate how different dopants in erbium-doped fiber could be employed to produce, in our case, a flat spectrum for sliced WDM channels [44] and not for gain flattening per se [45] -this work was presented postdeadline at the the Optical Society of America's Optical Amplifiers and Their Applications Topical Meeting in Breckenridge, Colorado in 1994 (Fig.…”

Multiple Access Techniques for Fiber-Optic Networks

“…In [87], 10 channels operating at 2 Mbps were transmitted over a range of 2.2 km of single-mode fiber and in [88], 384-kbps channels were carried over 9.7 km in a 20-channel arrangement which could carry 10 channels each way. To overcome this limitation in power budget, SuperLuminescent Diodes (SLDs) were used to demonstrate the feasibility of spectrum sliced broadband channels.…”