Full-mesh T- and O-band wavelength router based on arrayed waveguide gratings

Abstract

We propose an ultra-broadband full-mesh wavelength router supporting the T- and O-bands using 3 stages of cascaded arrayed waveguide gratings (AWGs). The router architecture is based on a combination of waveband and channel routing by coarse and fine AWGs, respectively. We fabricated several T-band-specific silica-based AWGs and quantum dot semiconductor optical ampliers as part of the router, and demonstrated 10 Gbps data transmission for several wavelengths throughout a range of 7.4 THz. The power penalties were below 1 dB. Wavelength routing was also demonstrated, where tuning time within a 9.4-nm-wide waveband was below 400 ms.

6.4-THz-spacing, 10-channel cyclic arrayed waveguide grating for T- and O-band coarse WDM

“…Several demonstrations of QD semiconductor optical amplifiers have also been reported [5,6]. Furthermore, a full-mesh interconnected wavelength router supporting the entire T-and O-bands was also reported [5]. The ultra-broad wavelength resource of the T-band makes it attractive for WDM networks that would benefit from large amount of channel, such as datacenter networks.…”

“…Several transmission demonstration exploiting the T-, C-, and L-bands using a single holey fiber were reported [1,2]. The main laser source for the T-band is based on quantum dot (QD) semiconductor and several broadband laser sources for this band has been demonstrated [3,4,5,6]. Several demonstrations of QD semiconductor optical amplifiers have also been reported [5,6].…”

“…The main laser source for the T-band is based on quantum dot (QD) semiconductor and several broadband laser sources for this band has been demonstrated [3,4,5,6]. Several demonstrations of QD semiconductor optical amplifiers have also been reported [5,6]. Furthermore, a full-mesh interconnected wavelength router supporting the entire T-and O-bands was also reported [5].…”

“…It could also potentially simplify configurations of a wavelength router supporting the entire T-and O-bands [5]. The AWG employs the 1 st diffraction order to support the ultra-broad bandwidth and had an asymmetrical arrayed waveguide layout to accommodate for the below 1 µm path-length difference.…”

Demonstration of 10-Gbit/s transmission over G.652 fiber for T-band optical access systems using quantum-dot semiconductor devices

“…10-Gbit/s transmission experiments have been performed in the T-band over single-mode holey fibers, which cover the T-band [4,5] and simultaneous transmission was demonstrated in the T-, C-, and L-bands [5]. In addition, to realize a 1000-channel class wavelength routing system using the T-band and the adjacent O-band, we have developed T/O-band-specific quantum-dot wavelength tunable lasers (QD-WTLs), quantum-dot semiconductor optical amplifiers (QD-SOAs), and arrayed waveguide gratings (AWGs) [6,7]. We demonstrated 4K ultra-highdefinition (UHD) video transmission in the T-band [8] and 10-Gbit/s transmission using the subset of the 1081-channel AWG router, which covers the broad wavelength range of the T/O-band [9].…”