US 12,283,997 B1
Reconfigurable optical receiver for use with multiple modulation techniques
Tonmoy Shankar Mukherjee, Camarillo, CA (US); Gary Mak, Santa Clara, CA (US); Masaki Kato, Palo Alto, CA (US); Lenin Kumar Patra, Dublin, CA (US); and Radhakrishnan Nagarajan, Santa Clara, CA (US)
Assigned to Marvell Asia Pte Ltd, Singapore (SG)
Filed by Marvell Asia Pte Ltd, Singapore (SG)
Filed on Apr. 11, 2023, as Appl. No. 18/133,472.
Claims priority of provisional application 63/329,513, filed on Apr. 11, 2022.
Int. Cl. H04B 10/61 (2013.01); H04B 10/69 (2013.01)
CPC H04B 10/693 (2013.01) [H04B 10/615 (2013.01); H04B 10/6161 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An optical receiver apparatus for use with multiple optical modulation techniques, the optical receiver apparatus configured to convert one or more optical signals to an electrical signal, the optical receiver apparatus comprising:
a photodiode circuit that is configured to process optical signals corresponding to multiple optical modulation techniques, including a first modulation technique and a second modulation technique different from the first modulation technique, the photodiode circuit including:
a first photodiode configured to receive a first optical signal corresponding to a first modulation technique, and
a multiple-input second photodiode coupled in series with the first photodiode, the multiple-input second photodiode being configured to receive i) a second optical signal corresponding to the first modulation technique, and ii) a third optical signal corresponding to the second modulation technique; and
a transimpedance amplifier having an input coupled to the first photodiode and the second photodiode via a node between the first photodiode and the second photodiode, the transimpedance amplifier being configured to generate the electrical signal.