Satoshi Yoshima

Characterization of a full encoder/decoder in the AWG configuration for code-based photonic Routers-part II: experiments and applications

A 200-gigachip/s multiple encoder/decoder in an arrayed waveguide configuration, which generates and recognizes simultaneously 16 optical labels in parallel, has been fabricated. The device has been experimentally characterized, and a 10-Gb/s 50-km optical packet switching (OPS) experiment has been successfully performed: Optical packets are switched to their own destinations using a single device with a processing rate of 13 gigapackets/s.

10.3-Gb/s Burst-Mode 3R Receiver Incorporating Full AGC Optical Receiver and 82.5-GS/s Over-Sampling CDR for 10G-EPON Systems

In this letter, we developed, for the first time, 10.3-Gb/s burst-mode 3R receiver incorporating a full automatic gain control optical receiver and 82.5-GS/s over-sampling clock and data recovery (CDR) for 10G-EPON. Burst-mode preamplifier, limiting amplifier, and CDR were newly fabricated on 0.13-¿m SiGe bipolar complementary metal-oxide-semiconductor process to completely meet the IEEE802.3av 10G-EPON standards. The 10.3-Gb/s burst-mode 3R receiver successfully achieves the burst receiver sensitivity of -30.1 dBm (at bit error rate (BER) =1 ×10-3) and the dynamic rage more than 24.1 dB (at BER=1 ×10-3) with the assistance of FEC RS(255, 223).

First demonstration of 10G-EPON and GE-PON co-existing system employing dual-rate burst-mode 3R transceiver

Novel 10G-EPON dual-rate burst-mode 3R transceiver with receiver sensitivity of -31.2dBm for 10.3Gb/s and -35.6dBm for 1.25Gb/s was developed. 10G-EPON and GE-PON coexisting system of 32x ONUs with loss budget of 33.5dB was successfully demonstrated.

200 Gchip/s, 16-label simultaneous multiple-optical encoder/decoder and its application to optical packet switching

A 200 Gchip/s, 16-label simultaneous multiple-optical encoder/decoder has been fabricated; it generates and recognizes simultaneously multiple codes in a parallel manner. 10 Gbit/s optical packet switching with the test encoder/decoder was demonstrated experimentally. Optical packets with different labels were switched according to their own destination label based on multiple label processing.

Multicast-capable optical code label switching and its experimental demonstration

Optical multicasting employing wavelength division multiplexing (WDM) has a problem with scalability, because the number of multicast members may surpass the number of available wavelength paths. In contrast to the conventional connection-oriented approach, this paper proposes optical code (OC) label switching for multicast networking and experimentally demonstrates this approach. The enabling components are an OC label, on which multicast group information is mapped, and a multicast routing table implemented with a reconfigurable optical matrix switch. This approach mitigates the scarcity of wavelength resources, thus, providing scalable optical multicast networking.

Dual-rate optical transceiver incorporating fully optimized burst-mode AGC/ATC functions for 10G-EPON systems

10G-EPON dual-rate transceiver with receiver sensitivity of −30.8dBm for 10.3125Gb/s and −35.5dBm for 1.25Gb/s due to fully optimized burst-mode AGC/ATC functions was developed. A high launch power and low dispersion penalty transmission were also achieved.

10 Gb/s-Based PON Over OCDMA Uplink Burst Transmission Using SSFBG Encoder/Multi-Port Decoder and Burst-Mode Receiver

In this paper, we propose a novel 10 Gb/s-based passive optical network (PON) over optical code division multiple access (OCDMA) system to realize the new generation full capacity optical access network which is easily upgraded from existing time division multiplexing PON (TDM-PON) without sacrificing the currently uplink bandwidth assigned to the individual user. 16-ONU (4-OCDMA x 4-packet) uplink burst transmission, an upgrade scenario by a factor of four of conventional 10 Gb/s-based PON, is experimentally demonstrated by using multi-level phase-shift-keying (PSK) super-structured fiber Bragg grating (SSFBG) encoder/multi-port decoder and burst-mode receiver. In the discussions, it will be shown that 32 users can be accommodated in 10 Gb/s-based PON over OCDMA system, and a key is newly introduced multi-level phase-shifted en/decoding, of which auto-correlation waveform can be preferably adopted in the burst-mode reception at 10 Gb/s.

A 10.3 Gbit/s LAN-PHY based Burst-mode Transmitter with a fast 6 ns turn-on/off time for 10 Gbps-based PON Systems

A novel 10.3 Gbit/s LAN-PHY based burst-mode transmitter with a fast 6 ns turn-on/off time and a high launch power more than +3.3 dBm over the temperature range 0 to 70 degree-C was successfully demonstrated by using a new impedance-controlled DC-coupled burst-mode LD driver circuit.

Full-Duplex, Extended-Reach 10G-TDM-OCDM-PON System Without En/Decoder at ONU

In this paper, we propose a novel long-reach 10.3 Gb/s time division multiplexing (TDM) and optical code division multiplexing (OCDM) hybrid passive optical network (PON) system without en/decoder at optical network unit (ONU), which can realize the aggregation and the extended reach of 10 Gb/s-class TDM-PON systems. Full-duplex transmission, including 4 packets × 4 optical codes (OCs) burst uplink, over single mode fiber (SMF) 65 km without dispersion compensation is experimentally demonstrated by adapting key components such as multi-level phase-shift-keying (PSK) multi-port optical en/decoder, narrow-band optical band pass filter and 10.3 Gb/s burst-mode 3R receiver.

Scaling the system capacity and reach of a 10G-TDM-OCDM-PON system without an en/decoder at an ONU

To realize high scaling of a 10-Gbps-class optical access system, we propose and demonstrate two different long-reach hybrid multiplexing passive optical network (PON) systems. First, we demonstrate good scalability in the ultimate transmission distance over 100 km single-mode fiber without dispersion compensation of a 10G wavelength division multiplexing (WDM)-time division multiplexing (TDM)-optical code division multiplexing (OCDM) PON system. Second, we also demonstrate a 100 km 10G/1G-TDM-OCDM-PON system for the purpose of the scalability of the current mixed GE-PON and 10G-EPON system.